Blower

Abstract

A blower according to the present invention comprises: a case having an inlet and an outlet; a blower fan disposed inside the case; and an induction heater disposed inside the case. The induction heater includes: a heat source unit on which a coil is wound; a heating unit that is inductively heated by the heat source unit; and a heat dissipation unit that is in contact with the heating unit and dissipates heat using a stream of air discharged from the blower fan. Accordingly, the blower is an induction heating-type blower that can use a stream of air to smoothly dissipate heat generated by induction heating, and thus can heat the heating unit directly without a separate medium between a heat source and the heating unit while overcoming the limitation of conventional induction heaters being difficult to use in the field of blowers, and thus can achieve high energy efficiency and generate a finely-tuned warm breeze.

Description

blower

[0001] The present invention relates to a blower capable of discharging warm air through an induction heater.

[0002] A blower is a mechanical device that drives a fan to create airflow. Conventional blowers that generate warm air often use heaters that use electricity as a heat source. This is because using electricity allows for product miniaturization compared to using fuels such as oil or gas as a heat source. These electric heaters (e.g., Korean Patent No. 2013-0033435), regardless of differences in detailed structure, generally utilize the principle that heat generated from a heat source is conducted to a heating unit (in this description, the "heating unit" is described as having the same meaning as the "heated unit" heated by the heat source) and a heat dissipation unit.

[0003] Specifically, the sheath-fin heater illustrated in (a) of Fig. 17 and the PTC (Positive Temperature Coefficient) heater illustrated in (b) can be taken as examples. In the case of the sheath-fin heater, an insulating material is filled between a heating wire corresponding to a heat source and a metal sheath corresponding to a heating part. In addition, in the case of the PTC heater, an insulating film and / or an insulating filler is placed between a PTC element corresponding to a heat source and a metal shell or ceramic shell corresponding to a heating part. (Hereinafter, for convenience, a heater utilizing a heat conduction method used in an electric heater is referred to as a 'conventional heater', and a heater using a conventional heater is referred to as a 'conventional heater'.) However, a conventional heater utilizing a heater of the above principle has a problem in that it has low thermal efficiency and consumes high power.

[0004] Meanwhile, among existing blowers, tower-type blowers with a vertically elongated appearance in the form of a tower (Japanese Patent No. 2013-213454A) or twin tower-type blowers with two laterally spaced discharge towers (U.S. Patent No. 10184495 B2) are attracting attention because, in addition to their unique aesthetic appeal, they can quickly discharge a large amount of discharge air through discharge ports formed vertically while occupying a narrow floor area in an indoor space, and they can evenly discharge the discharge air in the vertical direction of the indoor space.

[0005] However, when a warm air function is installed in a tower-type or twin-tower-type blower, there is a difficulty in that a heater of considerable volume must be installed to discharge warm air across the entire lengthwise long discharge port in an internal space with a narrow width compared to the lengthwise length, while also maintaining a distance from the blower case for safety reasons.

[0006] Meanwhile, when warm air is uniformly discharged from the entire area of ​​the vertically elongated outlets of a tower-type or twin-tower-type blower, there is a problem that the warm air may directly reach the user's face, increasing the dryness felt by the user in winter.

[0007] Accordingly, even if a method is devised to partially control the heater built into the tower-type blower according to height, difficulties may arise in design and manufacturing due to the narrow internal space of the tower-type blower, and in particular, in the case of the sheath pin heater described above, if the heat source is provided as a heating wire, the difficulty may be further increased because multiple individually operable heating wires must be arranged and connected in parallel to each part of the heater.

[0008] Meanwhile, even if we assume the introduction of an induction heating heater as a method of directly transferring heat from a heat source to a heating element without the insulating material described above in an electric heater, it may be difficult to use in the field of heaters that require heating airflow due to the inherent shape constraints that the shape of the coil (working coil) and the shape of the heating element must be appropriately designed so that the heating element can be inductively heated smoothly.

[0009] In addition, if we look at the induction range in the kitchen, which is a typical field where induction heating heaters are used, the heated object is placed on one side, and on the other side, a core layer (e.g., a ferrite core) that prevents the expansion of magnetic flux is placed, so that the magnetic flux is generally utilized only in the cross-sectional area based on the coil. Therefore, if we assume the case of placing the induction heating heater in the blower, a dead space is generated on the side where the core layer is placed, which reduces space utilization and flow efficiency, and only a portion of the magnetic flux emitted from the coil contributes to induction heating, which can cause a problem of reduced energy efficiency due to the inevitable leakage magnetic flux.

[0010] Citation 1: Korean Patent No. 2013-0033435 (July 1, 2011)

[0011] Reference 2: Japanese Patent No. 2013-213454A (April 3, 2012)

[0012] Citation 3: U.S. Patent No. 10,184,495 B2 (November 27, 2013)

[0013] The problem to be solved by the present invention is to improve the energy efficiency of a blower by omitting the intermediate heat transfer path between the heat source of the heater and the heated object.

[0014] Another problem to be solved by the present invention is to provide a blower equipped with an induction heater capable of dissipating heat through airflow.

[0015] Another problem that the present invention seeks to solve is to improve the space efficiency of a blower by providing an induction heater having a simple heat dissipation structure.

[0016] Another problem that the present invention seeks to solve is to improve the energy efficiency of the blower by making the induction heater use the magnetic flux on both sides of the coil.

[0017] Another problem that the present invention seeks to solve is to provide a blower in which partial control of the heater is easy.

[0018] Another problem that the present invention seeks to solve is to provide a blower that improves space efficiency by reducing the required distance between the heater and the case.

[0019] Another problem that the present invention seeks to solve is to improve the energy efficiency of the blower by synergizing the magnetic flux of the induction heaters of each twin tower.

[0020] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

[0021] A blower according to a first embodiment of the present invention for solving the above problem includes a case having an inlet and an outlet, a blower fan disposed inside the case, and an induction heater disposed inside the case.

[0022] At this time, the induction heating heater may include a heat source part in which a coil is wound, a heating part that is inductively heated by the heat source part, and a heat dissipation part that comes into contact with the heating part and dissipates heat by air current discharged from a blower fan.

[0023] Accordingly, by introducing an induction heating type heater, the heating part can be directly heated without a separate intermediary between the heat source and the heating part, and further, a heat dissipation part is provided separately from the heating part that is directly inductively heated by the coil, so that the induction heating type heater can be used in the blower field.

[0024] Meanwhile, the heat source part may be provided as a coil plate in the shape of a plate in which a coil is wound multiple times in a radial direction around a predetermined axis.

[0025] At this time, it may include a heating plate that is arranged parallel to the coil plate, is inductively heated by the coil plate, and forms a heat dissipation section that protrudes toward the opposite side of the coil plate.

[0026] Accordingly, by modifying the heating part of the induction heater to simultaneously function as a heat dissipation part, the structure of the blower can be simplified and space efficiency can be improved.

[0027] Meanwhile, the heat source part includes one side and the other side which are arranged opposite to each other based on the wound coil,

[0028] The heating unit may include a first heating unit disposed on one surface of the heat source unit and a second heating unit disposed on the other surface of the heat source unit.

[0029] Accordingly, by replacing the core layer of a conventional induction heater and utilizing both sides of the magnetic flux based on the wound coil for induction heating, leakage magnetic flux can be reduced and the space utilization and energy efficiency of the blower can be improved.

[0030] Meanwhile, a blower according to a second embodiment of the present invention for solving the above-described problem includes a low case equipped with an intake port, a blower fan disposed inside the low case and forcing air upward, a tower case extending vertically and having a vertically long discharge port disposed therein, and an induction heater disposed inside the tower case and extending vertically.

[0031] In addition, the induction heating heater includes a heat source part in which a coil is wound, a heat exchange part that is inductively heated by the heat source part and radiates heat by airflow discharged from a blower fan.

[0032] At this time, the induction heating heater can be placed at a smaller distance between the tower case and the heater compared to when a conventional heat conduction heater that implements an exhaust air with the same temperature conditions is placed.

[0033] This is because, by using an induction heater, the surface temperature of the heater is reduced compared to a conventional heater, thereby reducing the required distance between the case and the heater, which can improve the space efficiency of the blower.

[0034] Meanwhile, the heat source section is sectioned into a plurality of unit heat source sections in which coils are wound individually or in parallel and electricity can be supplied individually, and the plurality of unit heat source sections can be arranged in an up-down direction in consideration of the shape of the discharge port and the internal flow.

[0035] Accordingly, a blower having a space-efficient heater capable of partial control can be provided.

[0036] Meanwhile, a blower according to a third embodiment of the present invention for solving the above-described problem includes a low case having an intake port, a blower fan disposed inside the low case, first and second towers providing discharge paths and discharge ports that are laterally spaced apart from the upper side of the low case, and first and second induction heaters disposed inside each tower.

[0037] At this time, the magnetic flux generated by the coil wound in the first induction heating heater and the magnetic flux generated by the coil wound in the second induction heating heater can be formed in a direction in which they are mutually amplified.

[0038] That is, by placing and operating two induction heating heaters in each twin tower, the magnetic fields of each are mutually amplified, thereby reducing leakage flux and improving the energy efficiency of the blower compared to when the induction heating heaters are used alone.

[0039] Specific details of other embodiments are included in the detailed description and drawings.

[0040] According to a blower according to an embodiment of the present invention, one or more of the following effects are provided.

[0041] First, a blower according to one embodiment of the present invention can secure high energy efficiency of the blower compared to conventional heaters by directly generating heat through a heating unit without a separate intermediary material between the heat source and the heating unit through an induction heating heater.

[0042] Second, a blower according to one embodiment of the present invention has a heat dissipation unit separate from a heating unit that is directly inductively heated by a coil, thereby enabling smooth heat dissipation through airflow, thereby overcoming the limitations that made it difficult for conventional induction heating heaters to be used in the blower field.

[0043] Third, the blower according to one embodiment of the present invention can simplify the structure of the blower and improve space efficiency by modifying the heating part of the induction heater to simultaneously function as a heat dissipation part.

[0044] Fourth, a blower according to one embodiment of the present invention can reduce leakage flux and improve space utilization and energy efficiency of the blower by removing the core layer of a conventional induction heating heater and arranging the heating part on both sides so that all magnetic fluxes on both sides based on the wound coil are utilized for induction heating.

[0045] Fifth, a blower according to one embodiment of the present invention can provide a blower space-efficiently equipped with a heater capable of partial control by configuring the heat source part of an induction heating heater into a plurality of coil groups that are electrically connected in parallel and sectioning them.

[0046] Sixth, the blower according to one embodiment of the present invention uses an induction heating heater, thereby reducing the surface temperature of the heater compared to a conventional heater, thereby reducing the required distance between the case and the heater and improving the space efficiency of the blower.

[0047] Seventh, a blower according to one embodiment of the present invention can reduce leakage flux and improve the energy efficiency of the blower by arranging two induction heating heaters in twin towers and allowing their respective magnetic fields to be mutually amplified, compared to when the induction heating heaters are used alone.

[0048] The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

[0049] Figure 1 is a perspective view of a blower according to one embodiment of the present invention.

[0050] FIG. 2 is a perspective view showing an operating state of an airflow converter of a blower according to one embodiment of the present invention.

[0051] Figure 3 is a front view of Figure 2.

[0052] FIG. 4 is a schematic comparison of an induction heater according to an embodiment of the present invention and a virtual comparison heater in the plan view of FIG. 2.

[0053] Figure 5 is a longitudinal cross-sectional view of Figure 2.

[0054] Figure 6 is an internal cross-sectional view of Figure 3.

[0055] Figure 7 is a schematic diagram showing the operation of the first and second induction heating heaters of the blower according to one embodiment of the present invention.

[0056] Figure 8 is a drawing viewed from XI-XI of Figure 3.

[0057] Figure 9 is a drawing viewed from IX-IX of Figure 3.

[0058] Figure 10 is a schematic diagram showing the airflow according to the operating state of the airflow converter of the blower according to one embodiment of the present invention.

[0059] Figure 11 is a schematic diagram showing a blower according to one embodiment of the present invention implementing a forward wind.

[0060] Figure 12 is a schematic diagram showing a blower according to one embodiment of the present invention implementing a rise.

[0061] Figure 13 is a perspective view of an induction heater according to one embodiment of the present invention.

[0062] Figure 14 is a schematic diagram of an induction heating heater according to various embodiments of the present invention.

[0063] Figure 15 is a plan view looking at cross-section XX' of Figure 13.

[0064] Figure 16 is a conceptual diagram schematically illustrating cross-section YY' of Figure 13.

[0065] Figures 17 (a) and (b) are schematic diagrams of a heater used in a conventional air heater, and (c) is a schematic diagram of a conventional cross-sectional induction heating heater.

[0066] 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 and 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.

[0067] Hereinafter, for convenience, the term "general heater" or "conventional heater" may refer to a heater that transfers heat from a heat source to a heating element by using thermal conduction (e.g., the aforementioned sheathed fin heater or PTC heater). In addition, the term "general blower" or "conventional blower" may refer to a hot air blower equipped with the aforementioned conventional heater.

[0068] Below, for example, it is obvious that the number '520' includes '520a' and '520b' even without a separate description.

[0069] <Example 1>

[0070] The blower (1) according to the present embodiment is described on the premise that it is not limited to a specific shape of a case (100), such as a single tower or twin tower, which will be described later. Hereinafter, the description will be made with reference to the drawings, particularly FIGS. 1 to 6 and FIG. 13. The orientation illustrated in FIG. 13 is based on the case where the second induction heater, which will be described later, is arranged inside the second tower as in the state of FIG. 1.

[0071] The case (100) is provided with an intake port (155) and an outlet port (117, 127). The case (100) can form the exterior of a blower (1). A blower fan (320) is arranged inside the case (100). The blower fan (320) can form a flow from the intake port (155) to the outlet port (117, 127).

[0072] The blower (1) according to the present embodiment is equipped with an induction heater to implement warm air. The induction heater (500) is placed inside the case (100). The induction heater (500) may be placed between the blower fan (320) and the discharge port (117, 127).

[0073] Induction heating is a method that directly heats the object to be heated by applying an alternating current to a coil (working coil) installed inside, using a magnetic field, rather than the conventional heater method in which a heat source such as a heating wire transfers heat to the object to be heated through conduction or radiation.

[0074] The induction heating heater (500) includes a heat source part (510) around which a coil (511) is wound. The induction heating heater (500) includes a heat exchange part (520) that is inductively heated by the heat source part (510) and radiates heat through an airflow discharged from a blower fan (320). The heat exchange part (520) may include a heating part (530) that is inductively heated by the heat source part (510). The heat exchange part (520) may further include a heat dissipation part (550) that radiates heat through an airflow. In this case, the heat exchange part (520) may be a general term for the heating part (530) and the heat dissipation part (550).

[0075] The shape of the heating unit (530) may be provided in a shape suitable for induction heating corresponding to the shape of the wound coil (511). For example, if the wound coil (511) is a flat coil having a flat shape as described below, the shape of the heating unit (530) may be a heating plate (533) having a plate shape corresponding thereto.

[0076] The heating element (530) may be made of an electrically conductive material to respond to induction heating. The heating element (530) may be made of 400 series stainless steel or a magnetic material (nickel, cobalt, iron, copper, etc.). For example, the heating element (530) may be made of SUS430 and have a thermal conductivity coefficient of 58 W / mK.

[0077] In the induction heater (500), the heating unit (530) may be spaced apart from the heat source unit (510). In this description, the phrase "the heating unit (530) is spaced apart from the heat source unit (510)" encompasses the fact that there is no separate structure between the heating unit (530) and the heat source unit (510) that makes contact with each other. In other words, the heating unit (530) and the heat source unit (510) do not make indirect contact even through another structure. This can be understood as a layout structure in which the heat of the heat source unit (510) is not in a conduction form, and the heating unit (530) is directly heated by a magnetic field.

[0078] Unlike conventional heaters that transfer heat from a heat source to a heating unit through contact conduction, in the case of the induction heating heater (500) of the present invention, the heating unit (530) is directly inductively heated through a magnetic field generated by a coil (511) in the heat source unit (510), so the heat transfer efficiency from the heat source unit (510) to the heating unit (530) is significantly superior to that of conventional heaters.

[0079] In addition, the heater of this invention is advantageous in that it can quickly generate warm air at the beginning of operation compared to conventional heaters, and when generating the same temperature of discharged air, it generates less heat, so that the distance between the heater and the blower case can be narrowed during internal design to increase space efficiency (described later), and it has the advantage of the residual heat disappearing more quickly even when the heater is turned off.

[0080] An insulating member (540) may be placed between the heating member (530) and the heat source member (510). The insulating member (540) may be in close contact with the heating member (530). The insulating member (540) may prevent heat from the heating member (530) from being transferred to the heat source member (510). For example, a mica sheet or mica tape may be used as the insulating member (540).

[0081] Referring to Fig. 16, the insulation part (540) may be arranged on the inner side of the heating part (530) facing the coil (511). It may vary depending on the material of the insulation part (540), but for example, when the insulation part (540) is made of Mica, its thickness is preferably formed to be the same as or similar to the thickness of the heating part (530). Meanwhile, the wound coil (511) may be arranged spaced apart from the insulation part (540). It is preferable that the distance between the coil (511) and the insulation part (540) be set to 3 times or less of the maximum winding diameter of the coil (511).

[0082] The heat exchange unit (520) according to the present embodiment may include a heat dissipation unit (550) that comes into contact with the heating unit (530) and dissipates heat through airflow discharged from the blower fan (320).

[0083] That is, the induction heating heater (500) is provided with a heat dissipation unit (550) that is responsible for heat exchange with the air flow, so that the induction heating heater (500) can be used as a heater of a hot air blower.

[0084] The heat dissipation unit (550) may extend in a direction away from the heating unit (530). The heat dissipation unit (550) may be provided in a shape to increase the heat exchange area with the air flow. The heat dissipation unit (550) is connected to the heating unit (530) and may transfer heat from the heating unit (530) to the air flow.

[0085] For example, the heat dissipation unit (550) may be a fin having one end in contact with the heating unit (530) and the other end forming a pitch. In this case, the height (H) of the fin may have a ratio of 2 to 2.5 times the pitch (P). For example, the height may be 11 to 14 mm, and the pitch may be 4 to 7 mm. Meanwhile, the distance from the coil (511) of the heat source unit (510) to the valley of the fin may be similar to the height of the fin.

[0086] The heat dissipation member (550) may be made of a material having a heat transfer coefficient greater than a predetermined value. For example, the heat dissipation member (550) may be made of aluminum, which is known to have a thermal conductivity of 180 W / mK. In particular, aluminum has superior manufacturability compared to SUS, and thus may be advantageous for shape processing to increase the heat exchange area.

[0087] The heat dissipation unit (550) may be provided in a shape that guides the flow so that the airflow discharged from the blower fan (320) can move toward the discharge port (117, 127). For example, when the heat dissipation unit (550) has a louvered fin shape, the space between the pitches of the louvered fins may extend toward the discharge port (117, 127) so that the flow moves toward the discharge port (117, 127) through the space between the pitches. Specifically, the extension direction of the pitch may intersect the longitudinal direction of the discharge port.

[0088] The heat dissipation unit (550) may include a connecting heat dissipation unit (553) that is provided in a shape corresponding to the heating unit (530) and is arranged to be covered by the heating unit (530). For example, when the heating unit (530) is plate-shaped, the connecting heat dissipation unit (553) may be plate-shaped with the same area as the heating unit (530). The connecting heat dissipation unit (553) may have one surface in contact with the heating unit (530) and one end of a fin in contact with the other surface. (Fig. 14 (a))

[0089] The connecting heat sink (553) and the pin can be brazed to each other. The connecting heat sink (553) and the heating unit (530) can be bonded to each other.

[0090] Meanwhile, in constructing the heat dissipation unit (550), the heat dissipation unit (550) may be constructed of a material capable of induction heating, or the heat dissipation unit (550) may be constructed using the heating unit (530) described above.

[0091] For example, when the heating unit (530) is provided with a heating plate (533) in the shape of a plate, the heating plate (533) may include a heat dissipation section (534) that is formed to protrude on the opposite side of the heat source unit (510) (or coil plate (515)) to expand the heat exchange area with the air flow.

[0092] The heat dissipation section (534) may be formed from a portion of a single heating plate (533). The heat dissipation section (534) may be formed by deforming a portion of the single heating plate (533). For example, the heat dissipation section (534) may be a convex sphere formed on a portion of the single heating plate (533), and may include a first protrusion protruding in a positive direction, a second protrusion protruding in a negative direction, and an opening formed in the center of the first protrusion. (See (c) of FIG. 14) Alternatively, for example, the heat dissipation section (534) may be a slit-shaped section formed by cutting a portion of the heating plate (533) in a predetermined direction and bending it to have a height.

[0093] Alternatively, it may be formed by processing one of the heating plates (533) by providing a plurality of heating plates (533). For example, it may be formed by forming a first heating plate (553a) having one surface facing the coil plate (515), and a second heating plate (553b) connected to the other surface of the first heating plate (553a) while forming a plurality of heat dissipation sections (534) having a width that is a length extending along the longitudinal direction of the first heating plate (553a) and a pitch that is a height that protrudes vertically from the first heating plate (553a). (See (b) of FIG. 14)

[0094] In this case, there is an advantage in that the temperature of the heater can be raised more effectively by allowing induction heating to occur in the heat dissipation section (534) responsible for heat dissipation, compared to the case where the heat dissipation section (550) is provided with a separate material (e.g., aluminum) that is difficult to inductively heat, and the heat transfer from the heating section (530) to the heat dissipation section (550) relies solely on conduction.

[0095] Meanwhile, the blower (1) according to the present embodiment may further include a control unit (not shown) that controls the magnitude and / or frequency of the alternating current supplied to the induction heating heater (500). The control unit may adjust the alternating current to selectively implement any one of a plurality of preset warm air temperatures. For example, the control unit may include an inverter (not shown) and an EMI board (not shown).

[0096] The induction heating heater (500) controls the temperature of the heater only by electrical control, and due to the unique induction heating method and the physical properties of the heating part (530), it is easy to reach the target temperature, so the temperature of the heater can be controlled precisely and quickly compared to conventional heaters.

[0097] The coil (511) can receive alternating current from a power source and form a magnetic flux. The power source may be separately placed inside the case (100), or current may be supplied through a wire drawn from an external power source.

[0098] The blower (1) may further include an inverter and an EMI board. The inverter may convert direct current supplied by the power source into alternating current and supply it. The EMI board may function as an electrical filter that filters out and blocks various noises mixed in the power frequency.

[0099] <Second Embodiment>

[0100] The blower according to the present embodiment may be a blower (i.e., a tower-type blower) that is formed to be elongated in a predetermined direction. In addition, it may be understood that the tower case (140) in the present embodiment does not need to be provided as a twin tower (a first tower (110) and a second tower (120)) as in the third embodiment described below, and may be provided in the form of a single tower.

[0101] It goes without saying that any of the matters described in the first embodiment described above, as long as they do not conflict with those described in this embodiment, can be applied to the present embodiment without separate mention. Conversely, it goes without saying that any of the matters described in this embodiment can be applied to the first and third embodiments as long as they do not conflict.

[0102] The case (100) may include a low case (150) positioned on the lower side and an upper case (140) positioned on the upper side. An intake port (155) may be positioned in the low case (150). A blower fan (320) may be positioned inside the low case (150). The blower fan (320) may be positioned inside the low case (150) to force air upward.

[0103] The upper case (140) may be placed on the upper side of the low case (150). The upper case (140) may extend vertically. A discharge port (117, 127) may be placed in the upper case (140). The upper case (140) may also be referred to as a tower case (140).

[0104] The outlets (117, 127) can be extended vertically. The outlets (117, 127) can be extended vertically to correspond to the vertical length of the upper case (140). The outlets (117, 127) can be arranged on the circumferential surface of the upper case (140).

[0105] The induction heating heater (500) may be placed inside the tower case (140). The induction heating heater (500) may extend vertically. The induction heating heater (500) may extend vertically to correspond to the vertical length of the discharge port (117, 127). The heat source unit (500) may extend vertically to correspond to the vertical length of the discharge port (117, 127). The heat exchange unit (520) may extend vertically to correspond to the heat source unit (510) and may be placed to face the heat source unit (510).

[0106] Conventionally, a structure utilizing induction heating (e.g., induction for kitchen appliances) is generally used only in one direction (cross-sectional area) with respect to the coil (515), with a heated object (533) placed on one side based on the coil (515), and a core layer (e.g., ferrite core) (700) that absorbs magnetic flux to reduce magnetic flux leakage placed on the other side. (Fig. 17 (c))

[0107] However, when arranging a cross-sectional induction heater in a blower (1), dead space may be generated on the side where the core layer (700) is arranged, which may reduce space utilization and flow efficiency. Furthermore, even if a double-sided type is designed by arranging cross-sectional induction heaters facing each other (see (c) of FIG. 17), another core layer (700) must be provided for this purpose, which may cause problems such as excessive volume of the entire heater and a complicated structure.

[0108] Accordingly, the induction heating heater according to the present embodiment discloses a double-sided induction heating heater as follows.

[0109] The heat source unit (510) may include one side (510a) and the other side (510b) which are arranged opposite to each other with respect to the wound coil (511). The heating unit (530) may be arranged parallel to the heat source unit (510). The heating unit (530) may include a first heating unit (531) arranged on one side (510a) of the heat source unit (510) and a second heating unit (532) arranged on the other side (510b) of the heat source unit (510). The first heating unit (531) and the second heating unit (532) may be arranged symmetrically with respect to the heat source unit (510). A structure in which heating units (530) are provided on each side of the heat source unit (510) in this manner may be referred to as a double-sided induction heater (500). (See FIGS. 13 and 16)

[0110] However, in order to reduce leakage flux, a heating unit (530) made of a material with high permeability may be placed instead of the conventional core (e.g., ferrite core) (700) placed on either one side (510a) or the other side (510b) of the heat source unit (510). At this time, the permeability of the first and second heating units (530) must be equal to or greater than a predetermined value. For example, the permeability of the first and second heating units (530) may be a value greater than 1. For example, in the case of SUS430 material, the permeability is known to be equal to or greater than 600.

[0111] Accordingly, compared to the so-called single-sided induction heating structure having a core layer (700) on one side of the conventional coil, by removing the core layer and placing a heating plate with high permeability on both sides, the magnetic flux on both sides based on the wound coil is utilized for induction heating, thereby reducing leakage magnetic flux more effectively, increasing the coupling coefficient between the two opposing heating sections, and effectively securing inductance and resistance values. In addition, the double-sided induction heating heater can be implemented space-efficiently by removing the core layer.

[0112] Meanwhile, it is obvious that the heat dissipation unit (550) of the first embodiment described above may be modified in two ways when applied to the present embodiment. For example, the heat dissipation unit (550) may include a first heat dissipation unit (551) that is in contact with the first heating unit (531), and a second heat dissipation unit (552) that is in contact with the second heating unit (532). The first heat dissipation unit (551) and the second heat dissipation unit (552) may be symmetrical with respect to the heat source unit (510).

[0113] Meanwhile, referring to FIG. 13, the induction heating heater (500) may be formed in a plate shape. The plate-shaped induction heating heater (500) may be arranged in the longitudinal direction of the tower case (140) or the discharge port (117, 127).

[0114] The coil (511) within the heat source unit (510) may be wound to form a plate shape (e.g., a 'pancake-shaped coil' or a 'flat coil'). Accordingly, the coil housing (517), which forms the outer appearance of the heat source unit (510) and forms a space in which the coil (511) is accommodated, may also be formed in a plate shape. One side (510a) of the heat source unit (510) may be one of two sides of the plate shape. The other side (510b) of the heat source unit (510) may be the other side of two sides of the plate shape. The plate-shaped heat source unit (510) may be referred to as a coil plate (515).

[0115] The heating unit (530) may also be a plate shape corresponding to the heat source unit (510). The first heating unit (531) may be a plate shape facing one side (510a) of the heat source unit (510). The second heating unit (532) may be a plate shape facing the other side (510b) of the heat source unit (510).

[0116] The first and second heating units (530) may be plate-shaped and perpendicular to the axis (Ax) around which the coil (511) is wound. The first heat dissipation unit (551) may have a height in a vertical direction from the first heating unit (531). The second heat dissipation unit (552) may have a height in a vertical direction from the second heating unit (532). The first heating unit (531) and the second heating unit (532) may be symmetrical with respect to the heat source unit (510), and the first heat dissipation unit (551) and the second heat dissipation unit (552) may be symmetrical with respect to the heat source unit (510).

[0117] Accordingly, in a structure in which a vertically long discharge port is formed in a tower-shaped case that is formed vertically long, when the plate-shaped induction heating heater described above is used, compared to when a conventional cylindrical coil (air core coil) is used, an induction heating heater of a length corresponding to the discharge port can be easily manufactured and arranged.

[0118] The heat dissipation unit (550) may extend in a direction intersecting the longitudinal direction of the discharge ports (117, 127). A plurality of heat dissipation units (550) may be arranged in the longitudinal direction of the discharge ports (117, 127). Accordingly, the air flow from the blower fan (320) moves toward the discharge ports (117, 127) along the guidance of the heat dissipation unit (550), and may be distributed and flowed in an equal amount to the discharge ports (117, 127) formed vertically.

[0119] In constructing the above-described plate-shaped heat source part (510) (coil plate (515)), the coil (511) may be wound on the same plane with a single axis (Ax) as the center. At this time, the coil (511) may be wound in a form including a pair of first sections (511a) extending in a straight line and parallel to each other, and a pair of second sections (511b) connecting both ends of the pair of first sections (511a) and extending in a curved line. (See (a) of FIG. 15) A bobbin (518) that assists the winding of the coil (511) may be arranged at the inner center of the second section (511b).

[0120] Accordingly, by adjusting the length of the first section, the length of the coil plate (515) can be easily adjusted, thereby easily manufacturing a coil plate (515) that is formed long in one direction.

[0121] In addition, as described later, it was experimentally found that a coil plate (515) of the same area is advantageous in securing reactance and equivalent resistance when the coil (511) is wound around a single axis, compared to a case where each coil (511) is wound on the same plane around multiple axes.

[0122] Meanwhile, the heat source unit (510) may be composed of a single coil plate (515). Alternatively, the heat source unit (510) may be arranged so that a plurality of the above-described coil plates (515) are overlapped. For example, the heat source unit (510) may include a first coil plate (515a) on which a coil (511) is wound in a single layer, and a second coil plate (515b) on which a coil (511) is wound in a single layer around an axis (Ax) that is the same as the winding axis (Ax) of the first coil plate (515a), and the first and second coil plates (515a, 515b) may be arranged so as to be overlapped. The first and second coil plates (515a, 515b) may be accommodated in a single coil housing (517) in an overlapped manner.

[0123] At this time, the coils inside the first coil plate (515a) and the second coil plate (515b) can be electrically connected in series with each other. Experimentally, it was found that when the two coil plates (515) are connected in series, it is advantageous to secure reactance and equivalent resistance compared to when they are connected in parallel.

[0124] Meanwhile, the upper case (140) may include a first wall (115, 125) and a second wall (114, 124) that connects both ends of the first wall (115, 125) and is positioned to face the first wall (115, 125) to form an internal space (103a, 103b) therebetween.

[0125] At this time, the first heating unit (531) may be arranged to face the first wall (115, 125), and the second heating unit (532) may be arranged to face the second wall (114, 124).

[0126] By arranging the double-sided induction heater (500) in this way, a first heating path (E1) is formed between the first heating unit (531) and the first wall (115, 125) in which a portion of the airflow discharged from the blower fan (320) and flowing toward the discharge port (117, 127) is heated, and a second heating path (E2) is formed between the second heating unit (532) and the second wall (114, 124) in which the remainder of the airflow discharged from the blower fan (320) and flowing toward the discharge port (117, 127) is heated.

[0127] The first wall (115, 125) may refer to the inner wall of the upper case (140) to be described later. The second wall (114, 124) may refer to the outer wall of the upper case (140) to be described later.

[0128] That is, compared to applying a conventional cross-sectional induction heating heater, it is possible to eliminate dead space within the blower more easily, and to partition both sides of the flow path around the induction heating heater into heating paths in which the flow is heated.

[0129] Meanwhile, the coil (511) forming the coil plate (515) may be a self-bonding coil that strongly adheres adjacently wound coils to each other. Accordingly, the adhesion between the wound coils can be further improved, thereby increasing the number of coil turns per unit area. In addition, the shape of the wound coil can be maintained even without a separate structure for fixing the shape of the wound coil, thereby simplifying the structure of the heat source unit.

[0130] Meanwhile, the technical idea according to the present embodiment should be understood from the perspective that both the side from which the magnetic flux extends and the side from which the magnetic flux enters the coiled induction heating heater are utilized as heaters, and should not be simply limited to the two sides of the flat plate shape. For example, the technical idea according to the present embodiment is not limited to the plate-shaped coil (511) provided as an example, and it is obvious that it can be applied to the winding shape of the coil (511) and the shape of the induction heating heater, which can be variously modified as needed.

[0131] Hereinafter, the description will be made with reference to the drawings, particularly FIG. 6, FIG. 13, and FIG. 15. Meanwhile, the heat source unit (510) according to the present embodiment may include a plurality of unit heat sources (S1 to S5) in which coils (511) are each wound and electricity can be supplied individually.

[0132] A plurality of unit heat sources (S1 to S5) can be partitioned or arranged in consideration of the flow characteristics within the blower (1). For example, in a tower-type blower (1) structure in which a blower fan (320) is arranged in a lower case (150) and vertically extending discharge ports (117, 127) are formed in an upper case (140), the flow in the internal space of the upper case (140) may exhibit a difference in flow velocity depending on the distance from the blower fan (320). In consideration of this difference in flow velocity, a plurality of unit heat sources (S1 to S5) can be arranged along the longitudinal direction (i.e., vertical direction) of the discharge ports (117, 127). Each part of the heating unit (530) corresponding to each of the plurality of unit heat sources (S1 to S5) can have its temperature individually controlled by electrically controlling the alternating current flowing in the unit heat sources (S1 to S5).

[0133] In this way, by performing appropriate temperature control for each of the unit heat sources (S1 to S5) arranged in consideration of the flow characteristics, the warm air of the blower (1) can be implemented to suit various usage scenarios.

[0134] In particular, the induction heating heater (500) is advantageous over conventional heaters in that it can intensively heat a targeted area because less heat is radiated around the heated object, the target temperature can be effectively reached due to the low specific heat of the material constituting the heating section (530) of the induction heating heater (500), and the temperature is controlled purely electrically through the magnitude and frequency of the alternating current. Therefore, the method of individually controlling the heat source section (510) of the induction heating heater (500) by arranging it as needed as described above is very sophisticated and can implement various types of heater operation.

[0135] Specifically, as shown below, a control unit may be provided that executes various types of heater control scenarios considering the structural conditions and operational purposes of the blower (1).

[0136] For example, a plurality of unit heat sources (S1 to S5) can be supplied with electricity so as to form a magnetic flux that is stronger toward the top (S5 > S4 > S3 > S2 > S1). Alternatively, for example, among the plurality of unit heat sources (S1 to S5), a magnetic flux of a predetermined size or less can be formed for a unit heat source positioned lower than a predetermined height, and a magnetic flux of a predetermined size or more can be formed for a unit heat source positioned higher than the predetermined height. Accordingly, a unit heat source that is further from the fan is heated more strongly, thereby compensating for a decrease in the airflow rate due to an increase in the distance from the fan, and providing uniform warm air in the vertical direction.

[0137] Or, for example, a plurality of unit heat sources (S1 to S5) may be supplied with electricity so that they form a stronger magnetic flux the lower they are positioned (S1 > S2 > S3 > S4 > S5). Accordingly, the warm air discharged from the upper part of the outlets (117, 127), which is the airflow that can reach the user's upper body or face, can be made relatively lukewarm, thereby preventing the dryness of the face that is strongly felt when the heating is turned on in winter, while providing warmer warm air to the lower body below.

[0138] Meanwhile, when the heat source unit (510) is composed of a coil plate (515) in the form of a plate, the above-described unit heat sources (S1 to S5) may be formed by winding the coils (511) around a plurality of axes (Ax) arranged along the length direction of the heat source unit (510). The plurality of unit heat sources may be arranged so that adjacent unit heat sources are in contact with each other. Each of the plurality of unit heat sources may be circular. (See (b) of FIG. 15)

[0139] Meanwhile, the heat exchange unit (520) may include a plurality of unit heat exchange units (Q1 to Q5) corresponding to a plurality of unit heat sources (S1 to S5), respectively. The plurality of unit heat exchange units (Q1 to Q5) may form a single continuous appearance. (See FIG. 13) That is, unlike the heat source unit (510), for example, each section of a single heating plate (533) in the heat exchange unit (520) may function as a unit heating unit. This is because, when alternating current is applied to a specific unit heat source (S1), only a specific area (Q1) of the heating unit corresponding to the unit heat source is mostly inductively heated, so that the heat exchange unit (520) can be sectioned and function smoothly even if it is not configured by separating the heat exchange unit in shape.

[0140] Meanwhile, considering the flow characteristics within the blower, the unit heat sources (S1 to S5) may be differentiated by the number of turns. For example, at least some of the plurality of unit heat sources (S1 to S5) may have different numbers of turns of the coil (511). For example, the closer the plurality of unit heat sources (S1 to S5) are arranged to the blower fan (320) (S1 > S2 > S3 > S4 > S5), the greater the number of turns of the coil (511).

[0141] Meanwhile, when installing a heater within a blower, a certain distance must be maintained between the casing and the heater to ensure user safety and durability of the blower casing. Generally, the lower the heater surface temperature, the narrower the required distance.

[0142] In this regard, with reference to FIG. 4, a virtual comparison heater (600) may be assumed for the purpose of explaining the induction heating heater (500) of the present invention. The comparison heater (600) may refer to a heater that transfers heat from a heat source to a heating unit using thermal conduction.

[0143] The comparison heater (600) includes a comparison heat source (610) that receives current and generates heat. The comparison heater (600) includes a comparison heat exchanger (620) that radiates heat from the comparison heat source (610) to an air current. The comparison heater (600) includes an insulating intermediate path (660) that is disposed between the comparison heat source (610) and the comparison heat exchanger (620) and conducts heat from the comparison heat source (610) to the comparison heat exchanger (620).

[0144] For example, referring to (a) of FIG. 17, the comparison heater (600) may be a sheath-fin heater, the comparison heat source (610) may be a heating wire, the comparison heating part (630) of the comparison heat exchange part (620) may be a metal sheath, and the intermediate path part (660) may be electro-fused magnesia.

[0145] For example, referring to (b) of FIG. 17, the comparison heater (600) is a PTC (Positive Temperature Coefficient) heater, the comparison heat source unit (610) is a thermistor (PTC element) and electrodes (612) arranged at both ends of the thermistor, the comparison heating unit (630) of the comparison heat exchange unit (620) is a metal shell or a ceramic shell, and the intermediate path unit (660) may be a Kapton film and / or cement.

[0146] At this time, the distance (D1, D2) at which the induction heating heater (500) of the present invention is spaced inward from the tower case (140) may be smaller than the distance (Di1, Di2) at which the comparison heater (600) is spaced inward from the tower case (140). When the temperature of the airflow discharged by the blower (1) is the same, the temperature of the heat exchange part (520) of the induction heating heater (500) may be lower than the temperature of the comparison heat exchange part (620) of the comparison heater (600).

[0147] The discharge ports (117, 127) are arranged rearwardly from a central axis (V) that vertically penetrates the tower case (140), and the induction heating heater (500) can be arranged between the central axis (V) and the discharge ports (117, 127). At this time, the length (which can be understood as a 'width') in the left-right direction of the induction heating heater (500) can be formed to be longer than the length in the left-right direction of the virtual comparison heater (600).

[0148] Specifically, when it is assumed that the two implement the same temperature exhaust air under structurally identical ambient conditions, a difference in heat transfer efficiency may occur. This can be understood as a difference in that, in the case of the comparative heater (600), an intermediate path (660), which is a heat transfer path, exists additionally between the comparative heat source (610) and the comparative heating unit (630), whereas, in the case of the induction heating heater (500) of the present invention, the heating unit (530) is inductively heated directly while the heat transfer path corresponding to the intermediate path (660) is omitted. Due to this difference, the surface temperature of the induction heating heater (500) of the present invention can be maintained lower than the surface temperature of the comparative heater (600).

[0149] In addition, the difference in the distance between the case and the heater due to the difference in surface temperature can be understood as a difference in the heater's occupancy rate in the internal space. Since the heat dissipation section (550) of the induction heater (500) is configured to be wider than the comparative heat dissipation section (650) of the comparative heater (600), the heat exchange area is expanded, thereby further improving the heat exchange efficiency, which can be understood as a virtuous cycle (positive feedback) that lowers the required heater temperature value.

[0150] <Third Embodiment>

[0151] It goes without saying that any of the details of the first and second embodiments described above, as long as they do not conflict with those described in this embodiment, can be applied to this embodiment without separate mention. For example, details regarding the low case (150) and the blower fan (320) can be applied in the same manner as in the second embodiment, and thus descriptions thereof are omitted. Conversely, it goes without saying that details described in this embodiment can be applied to the first and second embodiments as long as they do not conflict.

[0152] The blower (1) according to the present embodiment may have a form (e.g., twin tower type blower (1)) in which at least two discharge ports (117, 127) are provided, and separate internal flow paths (103a, 103b) corresponding to each discharge port (117, 127) are branched off from the blower fan (320). Hereinafter, for convenience, the description will be made based on the twin tower type blower (1).

[0153] The first tower (110) is arranged on the upper side of the low case (150). The first tower (110) extends vertically. A first discharge port (117) is arranged in the first tower (110). The first internal space (103a), which is the internal space of the first tower (110), can be communicated with the internal space of the low case (150). Air pressured from the blower fan (320) can be discharged to the first discharge port (117) through the first internal space (103a).

[0154] The second tower (120) is positioned above the low case (150). The second tower (120) extends vertically. The second tower (120) is laterally spaced from the first tower (110) to form a blowing space (105) between which air flows. The blowing space (105) can be opened at the front, rear, and top.

[0155] A second discharge port (127) is arranged in the second tower (120). The second internal space (103b), which is the internal space of the second tower (120), can be connected to the internal space of the low case (150). Air supplied by the blower fan (320) can be discharged to the second discharge port (127) through the second internal space (103b).

[0156] The first tower (110) may include a first inner wall (115) facing the blowing space (105) and a first outer wall (114) facing the first inner wall (115) and forming a first inner space (103a) therebetween. The second tower (120) may include a second inner wall (125) facing the blowing space (105) and a second outer wall (124) facing the second inner wall (125) and forming a second inner space (103b) therebetween.

[0157] The first discharge port (117) is arranged on the first inner wall (115) to discharge air inside the first tower (110) into the blowing space (105), and the second discharge port (127) is arranged on the second inner wall (125) to discharge air inside the second tower (120) into the blowing space (105). The first discharge port (117, 127) and the second discharge port (117, 127) can be arranged within the height of the blowing space (105).

[0158] The blower (1) of the present embodiment includes first and second induction heating heaters (501, 502). The first induction heating heater (501) is placed inside the first tower (110). The second induction heating heater (502) is placed inside the second tower (120).

[0159] At this time, referring to FIG. 7, the magnetic flux generated by the wound coil (511) in the first induction heating heater (501) and the magnetic flux generated by the wound coil (511) in the second induction heating heater (502) are formed in a direction of mutual amplification (Synergy). For example, when the magnetic flux of the first induction heating heater (501) is in a direction that diverges toward the first inner wall (115), the magnetic flux of the second induction heating heater (502) can transmit the alternating current so that it converges from the second inner wall (125). For example, when the magnetic flux of the first induction heating heater (501) is in a direction that converges from the first inner wall (115), the magnetic flux of the second induction heating heater (502) can transmit the alternating current so that it diverges toward the second inner wall (125).

[0160] Accordingly, the disadvantage of induction heaters that consume more power than conventional heaters can be compensated for, and the energy efficiency of twin tower blowers can be improved.

[0161] Meanwhile, the first axis (Ax1), which is the center around which the coil (511) of the first induction heating heater (501) is wound, and the second axis (Ax2), which is the center around which the coil (511) of the second induction heating heater (502) is wound, may be arranged on the same line. Through this, the mutual amplification effect according to the present embodiment can be further improved. (See Fig. 3)

[0162] Meanwhile, the first induction heating heater (501) may be placed closer to the first inner wall (115) than the first outer wall (114), and the second induction heating heater (502) may be placed closer to the second inner wall (125) than the second outer wall (124). Through this, the physical distance between the two induction heating heaters (500) may be minimized, thereby further enhancing the mutual amplification effect of the magnetic flux.

[0163] In addition, when the first discharge port (117) is arranged on the first inner wall (115) to discharge air inside the first tower (110) into the blowing space (105), and the second discharge port (127) is arranged on the second inner wall (125) to discharge air inside the second tower (120) into the blowing space (105), the blowing space (105) becomes a space where the air discharged from both discharge ports (117, 127) joins, so that the flow can be more active near the inner wall compared to the outer wall. In this structure, the first and second induction heating heaters (501, 502) are positioned closer to the first and second inner walls than to the first and second outer walls, respectively, so that the heaters are positioned closer to the inner wall where more flow occurs, thereby effectively preventing user safety issues and a decrease in the durability of the case (100) due to a temperature increase in the case (100) caused by the heaters.

[0164] Meanwhile, a space through which air can flow is formed between the induction heating heater (500) and the first inner wall (115) and the first outer wall (114), so that air can flow. Through this, the case (100) can be prevented from being heated due to the heat of the induction heating heater (500).

[0165] The first inner wall (115) can be more actively cooled by the air discharged from the first outlet (117). Accordingly, by arranging the induction heater (500) closer to the first inner wall (115) than to the first outer wall (114), overheating of the tower case (140) can be more effectively prevented.

[0166] Meanwhile, the first inner wall (115) and the second inner wall (125) may be made of a material that allows magnetic flux to pass through. In addition, the first outer wall (114) and the second outer wall (124) may be made of a material that shields magnetic flux (a material capable of magnetic shielding, for example, a ferromagnetic material such as iron, permalloy, sendust, or silicon steel). Through this, the magnetic flux extending from the induction heating heater (500) inside the tower toward the inner wall may be increased, thereby enhancing the mutual amplification effect of the magnetic flux between the two heaters.

[0167] The first and second inner walls (115, 125) may be made of a material with strong heat resistance to maintain durability even when the heaters are placed close together. The first and second inner walls (115, 125) may be made of a material with low thermal conductivity to ensure user safety even when the heaters are placed close together. The first and second inner walls (115, 125) may be made of a material other than a magnetic metal to prevent induction heating as magnetic flux passes through them.

[0168] The upper surface of the induction heating heater (500) may be positioned in the central portion in the front-back direction within the internal space of the first tower (110) or the second tower (120). The upper surface of the induction heating heater (500) may be positioned forward relative to the lower surface of the induction heating heater (500). In other words, the induction heating heater (500) may be positioned at an angle such that the lower surface is positioned rearward relative to the upper surface.

[0169] The induction heating heater (500) can be arranged parallel to the first discharge port (117) or the second discharge port (127).

[0170] The induction heating heater (500) may be arranged to have an inclination (angle) of a3 with respect to the vertical axis (V). For example, the induction heating heater (500) may be arranged to have an inclination within a certain error range based on an angle of 4 degrees with respect to the vertical direction. The discharge ports (117, 127) may be arranged to have an inclination of a1 with respect to the vertical direction.

[0171] Accordingly, the heat source unit (510) and the heating unit (530) may be arranged to be inclined with a constant incline with respect to the vertical axis (V). The heat source unit (510) and the heating unit (530) may be extended along the longitudinal direction of the first discharge port (117) or the second discharge port (117, 127), and the heat dissipation unit (550) may be extended perpendicular to the extension direction of the heat source unit (510) and the heating unit (530). A plurality of heat dissipation units (550) may be arranged in the longitudinal direction of the discharge port (117, 127).

[0172] For example, when the heat source (510) and the heating unit (530) form an angle of about 4 degrees with the vertical axis (V), the heat dissipation unit (550) can form an angle of about 4 degrees with the ground.

[0173] Accordingly, the heat dissipation part (550) of the induction heating heater (500) may serve as a guide so that the air discharged from the blower fan (320) flows to the discharge port (117, 127) located at the rear of the tower, and also, the air discharged upward from the blower fan (320) may be evenly introduced to the entire area of ​​the induction heating heater (500).

[0174] The amount of air flowing at the bottom of the first or second tower (120) may be maximum, and the amount of air flowing at the top may be minimum. By adjusting the space between the induction heater (500) and the blower fan (320) through the inclined arrangement, the pressure difference that may decrease as it goes upward can be compensated for, thereby preventing pressure loss and improving blowing efficiency.

[0175] Meanwhile, the induction heating heater (500) may further include a flow shielding member (900) that bypasses the heater and blocks air from flowing directly to the outlet (117, 127). The flow shielding member (900) may be arranged at the bottom of the induction heating heater (500) and may extend toward the bottom of the first outlet (117) or the second outlet (117, 127). The bottom of the first outlet (117) or the second outlet (117, 127) may be arranged at the top of the flow shielding member (900).

[0176] The blower (1) according to the present embodiment may be equipped with a single inverter and placed in a low case (150). The first and second induction heaters (501, 502) placed in each of the first and second towers may be electrically connected to a single inverter. The same may be true for the EMI board.

[0177] The first and second induction heating heaters (501, 502) may be electrically connected in series. In this case, when the first and second induction heating heaters (501, 502) are connected in series, energy efficiency may be improved compared to parallel connection. Alternatively, the first and second induction heating heaters (501, 502) may be electrically connected in parallel. In this case, when selectively controlling the first and second induction heating heaters (501, 502), parallel connection may provide a simpler electrical structure than serial connection.

[0178] The blower (1) according to the present embodiment may further include a control unit (not shown) that controls the alternating current supplied to each of the first and second induction heating heaters (501, 502). The control unit may selectively supply the alternating current to only one of the first induction heating heater (501) and the second induction heating heater (502). The control unit may also supply the alternating current so that the temperatures of the first induction heating heater (501) and the second induction heating heater (500) are different from each other. Accordingly, each of the twin towers may be controlled to discharge air having different temperatures. ('2-zone' air conditioning)

[0179] <Fourth Embodiment>

[0180] It goes without saying that any of the matters relating to the first, second, and third embodiments described above, as long as they do not conflict with those described in this embodiment, can be applied to the present embodiment without further mention. Furthermore, it goes without saying that any of the matters described in this embodiment, as long as they do not conflict with those described in this embodiment, can be applied to the first, second, and third embodiments.

[0181] When the heat dissipation unit and the heating unit described above are formed of different materials having different thermal expansion coefficients, a problem may arise in which the initial shape of the induction heater is damaged in a high-temperature heater operating environment.

[0182] Specifically, in a structure where a heating plate (e.g., SUS430 material known to have a thermal expansion coefficient of 10.4) and a heat dissipation plate (e.g., aluminum known to have a thermal expansion coefficient of approximately 23) are in surface contact, if the two plates are attached using bolting or a hardenable TIM (Thermal Interface Material), a gap may be generated between the two plates due to a difference in the thermal expansion coefficient during heater operation, which may cause a problem of reduced thermal efficiency.

[0183] Accordingly, referring to FIG. 18, the above problem can be solved through the technical idea disclosed by the induction heating heater according to the fourth embodiment described below.

[0184] In this embodiment, the heating unit (530') may be coated on the heat dissipation unit (550') by a thermal spray method. That is, a thermal spray material of the material constituting the heating unit may be thermally coated on one surface of the heat dissipation unit (550') that is to receive heat from the heating unit.

[0185] Thermal spray coating is a surface modification technology that improves performance without damaging or deforming the base material. It is a technology that injects a powder or wire-shaped thermal spray material into a thermal spray device that generates a high-temperature heat source such as a flame or plasma, turns it into a molten or semi-molten state, and then collides with the surface of the base material at high speed to form a film layer by laminating it.

[0186] Although the technical idea of ​​this embodiment is not limited by the shape of the heat dissipation unit and / or the heating unit, for convenience of description below, the description is based on the case where the heat dissipation unit (550') is in the form of a heat sink and the heating unit (530') is coated on the inner surface of the heat sink base, as shown in FIG. 18.

[0187] The heat dissipation unit (550') needs to secure a predetermined thickness (T) in order to maintain its shape during the high-temperature thermal spray coating process. The heat dissipation unit (550') may be a heat sink having a plate-shaped base and a plurality of fins protruding from the base to one side to form a flow path therebetween, which is advantageous in securing the thickness. The thickness (T) of the heat sink base may be at least 2.0T, and preferably 2.5T. The heat sink may be made of aluminum.

[0188] The heating unit (530') may be a coating film spray-coated on the inner surface of the heat dissipation unit. The heating unit (530') may be a coating film formed of an iron (Fe) material that is easy to induction heat. The heating unit (530') may be a coating film coated on the inner surface of the heat sink base.

[0189] Even if the induction heater operates at a high temperature, by configuring the heat dissipation part and the heating part as in this embodiment, the original shape of the induction heater can be maintained despite the difference in thermal expansion coefficient between different materials, thereby improving durability.

[0190] <Common Information>

[0191] Below, matters relating to a blower that can be understood as a description of at least one of the above-described multiple embodiments are described.

[0192] The air discharge direction of the blower can be divided into a first air discharge direction (S1) that is discharged forward and backward through the blowing space (105), and a second air discharge direction (S2) that is formed in an up-down direction.

[0193] The air discharged in the first air discharge direction (S1) may be referred to as a forward wind. The air discharged in the second air discharge direction (S2) may be referred to as an upward wind.

[0194] Forward wind should be understood not as a flow of air exclusively forward, but rather as a predominant airflow. Similarly, upwind should be understood not as a flow of air exclusively upward, but rather as a predominant airflow of air upward.

[0195] The blowing space (105) can be formed with a constant vertical spacing (or width). By forming the left and right width of the blowing space (105) constant, the flow of air flowing in front of the blowing space can be formed more uniformly.

[0196] Conversely, if the upper and lower widths are different, the flow velocity on the wider side may be lower, and a velocity deviation may occur based on the vertical direction. If a velocity deviation occurs in the vertical direction, the air's reach may vary.

[0197] As described above, the air discharged from the first discharge port and the second discharge port can be combined in the blowing space (105) and then flowed to the user.

[0198] Instead of allowing the discharge air of the first discharge port (117) and the discharge air of the second discharge port (127) to flow to the user individually, the discharge air of the first discharge port (117) and the discharge air of the second discharge port (127) can be combined in the blowing space (105) and then provided to the user.

[0199] The blowing space (105) can be used as a space where discharged air is combined and mixed. In addition, the air behind the blowing space can also flow into the blowing space by the discharged air discharged into the blowing space (105).

[0200] By combining the discharge air of the first discharge port (117) and the discharge air of the second discharge port (127) in the blowing space, the straightness of the discharge air can be improved. In addition, by combining the discharge air of the first discharge port (117) and the discharge air of the second discharge port (127) in the blowing space, the air around the first tower and the second tower can also flow indirectly in the air discharge direction.

[0201] The first tower (110) and the second tower (120) may be formed to be streamlined with respect to the direction of air flow. Specifically, the first inner wall (115) and the first outer wall (114) may be formed to be streamlined with respect to the front-back direction, and the second inner wall (125) and the second outer wall (124) may be formed to be streamlined with respect to the front-back direction. For example, the first and second inner walls may have a convex shape toward each other. For example, the first and second outer walls may have a convex shape in a direction opposite to the first and second inner walls, respectively.

[0202] The shortest distance between the first inner wall (115) and the second inner wall (125) may be referred to as B0. The discharge port (117)(127) may be located further back than the shortest distance (B0).

[0203] The separation distance between the front end (112) of the first tower (110) and the front end (122) of the second tower (120) may be referred to as the first separation distance B1, and the separation distance between the rear end (113) of the first tower (110) and the rear end (123) of the second tower (120) may be referred to as the second separation distance B2.

[0204] B1 and B2 may be formed identically. Alternatively, either B1 or B2 may be formed with a longer length.

[0205] The first outlet (117) and the second outlet (127) can be positioned between B0 and B2.

[0206] It is preferable that the first discharge port (117) and the second discharge port (127) be positioned closer to the rear end (113) of the first tower (110) and the rear end (123) of the second tower (120) than B0.

[0207] The closer the outlet (117)(127) is positioned to the rear end (113)(123), the easier it is to control airflow through the Coanda effect described later.

[0208] The inner wall (115) of the first tower (110) and the inner wall (125) of the second tower (120) can directly provide the Coanda effect, and the outer wall (114) of the first tower (110) and the outer wall (124) of the second tower (120) can indirectly provide the Coanda effect.

[0209] The inner wall (115)(125) can directly guide the air discharged from the discharge port (117)(127) to the front end (112)(122).

[0210] Due to the air flow in the blowing space (105), indirect air flow may also occur in the outer wall (114)(124).

[0211] The outer wall (114)(124) can induce the Coanda effect for indirect air flow and guide the indirect air flow to the shear (112)(122).

[0212] The upper portion of the blowing space (105) can be opened. The airflow converter described below can convert the horizontal airflow passing through the blowing space into an upward airflow, and the upward airflow can flow into the open upper portion of the blowing space. The upward airflow can suppress the discharged air from flowing directly to the user and actively convect the indoor air.

[0213] By forming the vertical length of the first discharge port (117) and the second discharge port (127) to be much longer than the left-right width (B0, B1, B2) of the blowing space, the discharge air of the first discharge port and the discharge air of the second discharge port can be induced to merge in the blowing space.

[0214] Meanwhile, the tower case may further include a tower base (130) connecting the first tower (110) and the second tower (120). The tower base (130) may be connected to the upper side of the low case (150) and may be connected to the lower sides of the first and second towers.

[0215] The blower (1) may be a columnar shape with a diameter that decreases toward the top. The blower (1) may have an overall cone or truncated cone shape. If the cross-section narrows toward the top, there is an advantage in that the center of gravity is lowered and the risk of tipping over due to external impact is reduced.

[0216] The outer surfaces of the low case (150) and the tower case (140) may be formed continuously. In particular, the lower portion of the tower base (130) and the upper portion of the low case (150) may be in close contact, and the outer surface of the tower base (130) and the outer surface of the low case (150) may form a continuous surface. To this end, the lower diameter of the tower base (130) may be formed to be equal to or slightly smaller than the upper diameter of the low case (150).

[0217] The tower base (130) can distribute the filtered air supplied from the base (150) tower and provide the distributed air to the first tower (110) and the second tower (120).

[0218] The blowing space (105) may be arranged on the upper side of the tower base (130). The upper surface of the tower base (130) and the inner walls of the first and second towers may define the boundary of the blowing space (105). In addition, an outlet (117) (127) may be arranged on the upper side of the tower base (130), and an upward airflow and a horizontal airflow may be formed on the upper side of the tower base (130).

[0219] To minimize friction with air, the upper surface (131) of the tower base (130) may be formed as a curved surface. In particular, the upper surface may be formed as a curved surface that is concave downward and may be formed to extend in the front-back direction. One side (131a) of the upper surface (131) may be connected to the first inner wall (115), and the other side (131b) of the upper surface (131) may be connected to the second inner wall (125).

[0220] The center line L-L' is an imaginary line between the first tower (110) and the second tower (120), and may be arranged in the front-back direction and may be arranged to pass through the upper surface (131). The first tower (110) and the second tower (120) may be arranged symmetrically left and right with respect to the center line L-L'. In particular, the first discharge port (117) and the second discharge port (127) may be arranged symmetrically left and right with respect to the center line L-L'.

[0221] The blower (1) may include a filter (200) disposed inside the case (100). The filter (200) may be disposed inside the low case (150). The filter (200) may be disposed upstream of the blower fan, i.e., between the intake port and the blower fan.

[0222] The low case (150) may include a base (151) that is placed on the ground, and a base outer (152) that is connected to the upper side of the base (151), has a space formed inside, and has a suction port (155) formed therein.

[0223] The base (151) can be formed in a circular shape. The shape of the base (151) can be formed in various ways.

[0224] The base outer (152) may be formed in a truncated cone shape with open upper and lower sides. In addition, a portion of the side surface of the base outer (152) may be formed to be open. The open portion of the base outer (152) may be referred to as a filter insertion port (154).

[0225] The case (100) may further include a cover (153) that shields the filter insertion port (154). The cover (153) is detachably assembled from the base outer (152), and the filter (200) may be mounted or assembled on the cover (153). The user may detach the cover (153) and take the filter (200) out of the case (100).

[0226] The suction port (155) can be formed in at least one of the base outer (152) and the cover (153). The suction port (155) is formed in both the base outer (152) and the cover (153), and can suck air from all 360 directions around the case (100). The suction port (155) is formed in the shape of a hole, and the shape of the suction port (155) can be formed in various ways.

[0227] The filter (200) may be formed in a cylindrical shape with vertical hollow spaces formed inside. The outer surface of the filter (200) may face the intake port (155). Indoor air flows through the filter (200) from the outer side to the inner side, and in this process, foreign substances or harmful gases in the air can be removed.

[0228] The fan device (300) can be placed above the filter (200). The fan device (300) can cause air passing through the filter (200) to flow to the first tower (110) and the second tower (120).

[0229] The blower fan (300) includes a fan motor (310) and a blower fan (320) rotated by the fan motor (310), and can be placed inside the low case (150). The fan motor (310) is placed above the blower fan (320), and the motor shaft of the fan motor (310) can be coupled to the blower fan (320) placed below.

[0230] A motor housing (330) in which a fan motor (310) is installed may be placed on the upper side of the blower fan (320).

[0231] The motor housing (330) may be shaped to encompass the entire fan motor (310). Since the motor housing (330) encompasses the entire fan motor (310), the flow resistance with respect to air flowing from the bottom to the top can be reduced.

[0232] Alternatively, the motor housing (330) may be formed in a shape that surrounds only the lower part of the fan motor (310).

[0233] The motor housing (330) may include a lower motor housing (332) and an upper motor housing (334). At least one of the lower motor housing (332) and the upper motor housing (334) may be coupled to the case (100).

[0234] The lower motor housing (332) can be coupled to the case (100). After the fan motor (310) is installed on the upper side of the lower motor housing (332), the upper motor housing (334) is covered to surround the fan motor (310).

[0235] The motor shaft of the fan motor (310) passes through the lower motor housing (332) and can be assembled to the blower fan (320) positioned at the bottom.

[0236] The blower fan (320) may include a hub to which the shaft of the fan motor is coupled, a shroud spaced apart from the hub, and a plurality of blades connecting the hub and the shroud.

[0237] Air passing through the filter (200) can be sucked into the shroud and then pressurized and flowed by the rotating blades. The hub can be positioned on the upper side of the blades, and the shroud can be positioned on the lower side of the blades. The hub can be formed in a concave bowl shape toward the lower side, and the lower side of the lower motor housing (332) can be partially inserted.

[0238] A radial fan may be used as the blower fan (320). A radial fan sucks in air toward the center of the shaft and discharges the air in the radial direction, but has the characteristic that the discharged air is formed at an angle relative to the axial direction.

[0239] Since the overall air flow is from bottom to top, when air is discharged in the radial direction like a typical centrifugal fan, a large flow loss may occur due to the change in flow direction.

[0240] The radial fan can minimize air flow loss by discharging air radially upward.

[0241] Meanwhile, a diffuser (340) may be further placed on the upper side of the blower fan (320). The diffuser (340) may guide the air flow by the blower fan (320) in an upward direction.

[0242] The diffuser (340) may further reduce the radial component in the air flow and enhance the upward air flow component. The motor housing (330) may be placed between the diffuser (340) and the blower fan (320).

[0243] In order to minimize the vertical installation height of the motor housing, the lower part of the motor housing (330) may be inserted into the blower fan (320) and overlapped with the blower fan (320). In addition, the upper part of the motor housing (330) may be inserted into the diffuser (340) and overlapped with the diffuser (340).

[0244] Here, the lower part of the motor housing (330) may be positioned higher than the lower part of the blower fan (320), and the upper part of the motor housing (330) may be positioned lower than the upper part of the diffuser (340).

[0245] To optimize the installation location of the motor housing (330), the upper side of the motor housing (330) may be placed inside the tower base (130), and the lower side of the motor housing (330) may be placed inside the low case (150). Alternatively, the motor housing (330) may be placed inside the tower base (130) or the low case (150).

[0246] Inside the low case, the space below the blower fan can be defined as a filter installation space (101). Inside the case (100), the space between the blower fan and the discharge ports (117)(127) can be defined as a blower space (102). Inside the case (100), the internal spaces of the first tower (110) and the second tower (120) in which the discharge ports (117)(127) are arranged can be defined as a discharge space (103) to the first and second internal spaces (103a, 103b).

[0247] Indoor air can be drawn into the filter installation space (101) through the intake port (155), and then discharged through the ventilation space (102) and the discharge space (103) to the discharge port (117) (127).

[0248] The air discharged from the first discharge port (117) can flow along the first inner wall (115) due to the Coanda effect and can flow toward the front end (112).

[0249] The first discharge port (117) may include a first border (117a) forming an air discharge side (front end) edge, a second border (117b) forming an air discharge side (rear end) edge, an upper border (117c) forming an upper edge of the first discharge port (117), and a lower border (117d) forming a lower edge of the first discharge port (117).

[0250] The first border (117a) and the second border (117b) may be arranged parallel to each other. The upper border (117c) and the lower border (117d) may be arranged parallel to each other.

[0251] The first border (117a) and the second border (117b) may be arranged at an angle with respect to the vertical direction (V). In addition, the rear end (113) of the first tower (110) may also be arranged at an angle with respect to the vertical direction (V).

[0252] The inclination (a1) of the first border (117a) and the second border (117b) with respect to the vertical direction (V) may be formed at 4 degrees, and the inclination (a2) of the rear end (113) may be formed at 3 degrees. In other words, the inclination (a1) of the discharge port (117) may be formed to be greater than the inclination of the outer surface of the tower.

[0253] The second outlet (127) may be symmetrical to the first outlet (117).

[0254] The second discharge port (127) may include a first border (127a) forming an air discharge side (front end) edge, a second border (127b) forming an air discharge side (rear end) edge, an upper border (127c) forming an upper edge of the second discharge port (127), and a lower border (127d) forming a lower edge of the second discharge port (127).

[0255] The first border (127a) and the second border (127b) are arranged to be inclined with respect to the vertical direction (V), and the rear end (113) of the first tower (110) may also be arranged to be inclined with respect to the vertical direction (V). In addition, the inclination (a1) of the discharge port (127) may be formed to be greater than the inclination (a2) of the outer surface of the tower.

[0256] The first discharge port (117) of the first tower (110) may be arranged to face the second tower (120), and the second discharge port (127) of the second tower (120) may be arranged to face the first tower (110).

[0257] The air discharged from the first outlet (117) can cause the air to flow along the inner wall (115) of the first tower (110) through the Coanda effect. The air discharged from the second outlet (127) can cause the air to flow along the inner wall (125) of the second tower (120) through the Coanda effect.

[0258] It may further include a first discharge case (170) and a second discharge case (180).

[0259] The first discharge port (117) is formed in the first discharge case (170), and the first discharge case (170) can be assembled to the first tower (110). The second discharge port (127) is formed in the second discharge case (180), and the second discharge case (180) can be assembled to the second tower (120).

[0260] The first discharge case (170) may be installed so as to penetrate the inner wall (115) of the first tower (110), and the second discharge case (180) may be installed so as to penetrate the inner wall (125) of the second tower (120).

[0261] A first discharge opening (118) in which a first discharge case (170) is installed may be formed in the first tower (110), and a second discharge opening (128) in which a second discharge case (180) is installed may be formed in the second tower (120).

[0262] The first discharge case (170) may include a first discharge guide (172) formed at the air discharge side of the first discharge port (117) and a second discharge guide (174) formed at the air discharge side of the first discharge port (117) and opposite the first discharge port (117).

[0263] The outer surface (172a) (174a) of the first discharge guide (172) and the second discharge guide (174) may provide a part of the inner wall (115) of the first tower (110).

[0264] The inner side of the first discharge guide (172) may be arranged toward the first discharge space (103a), and the outer side may be arranged toward the blowing space (105). The inner side of the second discharge guide (174) may be arranged toward the first discharge space (103a), and the outer side may be arranged toward the blowing space (105).

[0265] The outer surface (172a) of the first discharge guide (172) may be formed as a curved surface. The outer surface (172a) may provide a surface continuous with the first inner wall (115). In particular, the outer surface (172a) may form a curved surface continuous with the outer surface of the first inner wall (115).

[0266] The outer surface (174a) of the second discharge guide (174) can provide a surface continuous with the first inner wall (115). The inner surface (174b) of the second discharge guide (174) can be formed into a curved surface. In particular, the inner surface (174b) forms a curved surface continuous with the inner surface of the first outer wall (115), and through this, the air of the first discharge space (103a) can be guided toward the first discharge guide (172).

[0267] A first discharge port (117) is formed between the first discharge guide (172) and the second discharge guide (174), and air in the first discharge space (103a) can be discharged to the blowing space (105) through the first discharge port (117).

[0268] Specifically, the air in the first discharge space (103a) is discharged between the outer surface (172a) of the first discharge guide (172) and the inner surface (174b) of the second discharge guide (174), and the space between the outer surface (172a) of the first discharge guide (172) and the inner surface (174b) of the second discharge guide (174) can be defined as a discharge gap (175). The discharge gap (175) can form a predetermined channel.

[0269] The discharge gap (175) may be formed so that the width of the middle portion (175b) is narrower than that of the inlet (175a) and the outlet (175c). The middle portion (175b) may be defined as the shortest distance between the second border (117b) and the outer surface (172a).

[0270] The cross-sectional area gradually narrows from the entrance of the discharge gap (175) to the middle part (175b), and then widens again from the middle part (175b) to the outlet (175c). The middle part (175b) may be located on the inside of the first tower (110). When viewed from the outside, the outlet (175c) of the discharge gap (175) may be seen as an outlet (117).

[0271] In order to induce the Coanda effect, the radius of curvature of the inner surface (174b) of the second discharge guide (174) may be formed to be larger than the radius of curvature of the outer surface (172a) of the first discharge guide (172).

[0272] The center of curvature of the outer surface (172a) of the first discharge guide (172) is positioned forward of the outer surface (172a) and may be formed inside the first discharge space (103a). The center of curvature of the inner surface (174b) of the second discharge guide (174) is positioned on the side of the first discharge guide (172) and may be formed inside the first discharge space (103a).

[0273] The second discharge case (180) may include a first discharge guide (182) formed at the air discharge side of the second discharge port (127) and a second discharge guide (184) formed at the air discharge side of the second discharge port (127) and opposite to the second discharge port (127).

[0274] A discharge gap (185) can be formed between the first discharge guide (182) and the second discharge guide (184).

[0275] Since the second discharge case (180) is symmetrical to the first discharge case (170), a detailed description can be omitted.

[0276] Meanwhile, the blower (1) may further include an air flow converter that changes the direction of air flow in the blowing space (105). The air flow converter may be a component that protrudes into the blowing space (105) and changes the direction of air flowing through the blowing space (105). The air flow converter may convert the horizontal air flow flowing through the blowing space (105) into an upward air flow.

[0277] The airflow converter may include a guide board (410) that is placed on the tower and protrudes into the blowing space (105), and a guide motor (not shown) that provides driving force for movement of the guide board (410). In addition, the airflow converter may further include a board guider (430) that guides movement of the guide board (410).

[0278] The guide board (410) may be a component that is hidden inside the tower or protrudes into the blowing space (105) to selectively change the discharge area in front of the blowing space.

[0279] The guide board (410) may include a first guide board (411) arranged in the first tower (110) and a second guide board (412) arranged in the second tower (120). The first and second guide boards (411, 412) may protrude forward of the blowing space (105) through the first and second board slits (119, 129), respectively.

[0280] To this end, a board slit (119) penetrating the inner wall (115) of the first tower (110) may be formed, and a board slit (129) penetrating the inner wall (125) of the second tower (120) may be formed, respectively.

[0281] The board slit (119) formed in the first tower (110) may be referred to as the first board slit (119), and the board slit formed in the second tower (120) may be referred to as the second board slit (129).

[0282] The first board slit (119) and the second board slit (129) can be arranged symmetrically left and right. The first board slit (119) and the second board slit (129) can be formed to extend vertically. The first board slit (119) and the second board slit (129) can be arranged to be inclined with respect to the vertical direction (V).

[0283] The front end (112) of the first tower (110) may be formed with a slope of 3 degrees, and the first board slit (119) may be formed with a slope of 4 degrees. The front end (122) of the second tower (120) may be formed with a slope of 3 degrees, and the second board slit (129) may be formed with a slope of 4 degrees.

[0284] The guide board (410) may be formed in a flat or curved plate shape. The guide board (410) may be formed to extend vertically and may be placed in front of the blowing space (105).

[0285] The guide board (410) may include a radially convex curved portion.

[0286] The guide board (410) can block the horizontal airflow flowing into the blowing space (105) and redirect it upward.

[0287] The inner end (411a) of the first guide board (411) and the inner end (412a) of the second guide board (412) may be in contact with or close to each other to form an upward airflow. Alternatively, one guide board (410) may be in close contact with the opposite tower to form an upward airflow.

[0288] When the airflow converter is not operating, the inner end (411a) of the first guide board (411) can close the first board slit (119), and the inner end (412a) of the second guide board (412) can close the second board slit (129).

[0289] When the airflow converter is operated, the inner end (411a) of the first guide board (411) can protrude into the blowing space (105) through the first board slit (119), and the inner end (412a) of the second guide board (412) can protrude into the blowing space (105) through the second board slit (129).

[0290] The first guide board (411) and the second guide board (412) can be protruded into the blowing space (105) in a rotational motion. Alternatively, at least one of the first guide board (411) and the second guide board (412) may be linearly moved in a sliding manner to protrude into the blowing space (105).

[0291] When viewed from the top, the first guide board (411) and the second guide board (412) can be formed in an arc shape. The first guide board (411) and the second guide board (412) can form a predetermined radius of curvature, and the center of curvature can be located in the blowing space (105).

[0292] When the guide board (410) is hidden inside the tower, it is preferable that the radially inner volume of the guide board (410) be formed larger than the radially outer volume.

[0293] The guide board (410) may be formed of a transparent material. A light-emitting element, such as an LED, may be placed on the guide board (410), and the entire guide board (410) may be illuminated by light generated from the light-emitting element. The light-emitting element may be placed in the discharge space (103) inside the tower and may be placed on the outer end of the guide board (410).

[0294] The guide motor may be a component that provides driving force to the guide board (410). The guide motor may be placed in at least one of the first tower (110) or the second tower (120). The guide motor may be placed above the guide board (410).

[0295] The guide motor may include a first guide motor that provides rotational force to the first guide board (411) and a second guide motor that provides rotational force to the second guide board (412).

[0296] The board guide (430) may be a component that transmits the driving force of the guide motor to the guide board (410). The board guide (430) may be placed in front of the guide motor and in the rear of the guide board (410).

[0297] The first tower (110), the second tower (120), and the blowing space (105) may be formed in an entirely truncated cone shape. The guide board (410) may move in the circumferential direction of the truncated cone. The outer wall of the first tower (110) and the outer wall of the second tower (120) may be formed in a truncated cone shape, and the first guide board (411) may move circumferentially along the inner surface of the outer wall of the first tower (110), and the second guide board (412) may move circumferentially along the inner surface of the outer wall of the second tower (120).

[0298] The guide board (410) may be positioned parallel to the board slit. The guide board (410) may be positioned perpendicular to the ground, but is preferably positioned parallel to the board slit. If the board slit is formed at a 4-degree incline from the ground, the guide board (410) may also be positioned at a 4-degree incline from the ground.

[0299] The guide board (410) may include a radially convex curved surface. The guide board (410) may be formed in an arc shape so that the center of curvature is positioned on the inside. The inner surface of the outer wall of the first tower (110) or the inner surface of the inner wall of the second tower (120) may include a curved surface. The guide board (410) may form a radially convex curved surface to correspond to the curved surface. The front surface of the board guider (430) may form a curved surface to correspond to the curved surface of the rear surface of the guide board (410). Therefore, the protruding guide board (410) can be stably guided.

[0300] The airflow converter may be positioned forward of the first outlet (117) or the second outlet based on the air discharge direction. Air may be discharged forward from the first outlet (117) or the second outlet. The Coanda effect may occur as the air passes through the first inner wall (115) or the second inner wall (125). Depending on the degree of protrusion, the airflow converter may implement a wide area wind, a concentrated wind, or an upward airflow.

[0301] Fig. 11 may be an exemplary diagram showing the horizontal airflow of a blower according to an embodiment of the present invention.

[0302] When providing horizontal airflow, the first guide board (411) can be hidden inside the first tower (110), and the second guide board (412) can be hidden inside the second ellipse (120).

[0303] The discharge air of the first discharge port (117) and the discharge air of the second discharge port (127) are combined in the blowing space (105) and can flow forward through the front end (112) (122).

[0304] And the air behind the blowing space (105) can be guided into the blowing space (105) and then flow forward.

[0305] Additionally, air around the first tower (110) can flow forward along the first outer wall (114), and air around the second tower (120) can flow forward along the second outer wall (124).

[0306] Since the first discharge port (117) and the second discharge port (127) are formed to extend vertically and are arranged symmetrically left and right, the air flowing from the upper side of the first discharge port (117) and the second discharge port (127) and the air flowing from the lower side can be formed more uniformly.

[0307] In addition, the air discharged from the first discharge port and the second discharge port joins in the blowing space (105), thereby improving the straightness of the discharged air and allowing the air to flow to a longer distance.

[0308] FIG. 12 may be an exemplary diagram illustrating the rising airflow of a blower according to the first embodiment of the present invention.

[0309] When providing an upward airflow, the first guide board (411) and the second guide board (412) protrude into the blowing space (105) and block the front of the blowing space (105).

[0310] As the front of the blowing space (105) is blocked by the first guide board (411) and the second guide board (412), the air discharged from the discharge port (117) (127) rises along the rear of the first guide board (411) and the second guide board (412) and can be discharged to the upper part of the blowing space (105).

[0311] By forming an upward airflow in the blower (1), the discharged air can be prevented from flowing directly toward the user. In addition, when it is desired to circulate indoor air, the blower (1) can be operated with an upward airflow.

[0312] For example, when using an air conditioner and a blower at the same time, the blower (1) can be operated with an upward air current to promote convection of indoor air, and the indoor air can be cooled or heated more quickly.

[0313] Those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering its technical spirit or essential characteristics. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims below rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included within the scope of the present invention.

Claims

1. A case equipped with an inlet and an outlet; A blower fan placed inside the above case; Including an induction heating heater placed inside the case, The above induction heater, A heat source part in which a coil is wound; A heating part that is inductively heated by the above heat source part; and A blower including a heat dissipation unit that comes into contact with the heating unit and dissipates heat through airflow discharged from the blower fan.

2. In paragraph 1, The above heat source part is, Including one side and the other side which are arranged opposite to each other based on the wound coil, The above heating part, A first heating unit arranged on one side of the above heat source unit; and Including a second heating unit arranged on the other side of the above heat source unit, The above heat dissipation part, A first heat dissipation part in contact with the first heating part; and A blower including a second heat dissipation member in contact with the second heating member.

3. In paragraph 2, The above coil is wound on a single plane and the heat source part is provided in a plate shape. One side of the above heat source is one of the two sides of the above plate shape, The other side of the above heat source part is the remaining side among the two sides of the above plate shape, The above first heating part is a plate shape facing one side of the heat source part, The above second heating unit is a blower having a plate shape facing the other surface of the heat source unit.

4. In paragraph 3, The above first and second heating parts are plate-shaped and perpendicular to the axis on which the coil is wound, The above first heat dissipation portion forms a height in a vertical direction from the above first heating portion, The above second heat dissipation unit is a blower that forms a height in a vertical direction from the above second heating unit.

5. In paragraph 3, The above case is, first wall; A second wall is included, which connects both ends of the first wall and is positioned to face the first wall to form an internal space of the case therebetween. The above first heating unit is positioned to face the first wall, The second heating unit is a blower positioned so as to face the second wall.

6. In paragraph 1, The above case is, A low case in which the above suction port is arranged and the blower fan is arranged inside; and An upper case is disposed on the upper side of the above low case, extends vertically, and includes an upper case in which the discharge port is disposed. The above outlet is, Extending vertically along the upper case and arranged on the circumference of the upper case, The above heat source part is, The above coil is wound to form a plate shape, The above heating part, It is a plate shape corresponding to the above heat source part and is arranged parallel to the above heat source part, The above induction heater, A blower that extends vertically to correspond to the above discharge port and is placed inside the upper case.

7. In paragraph 1, The coil of the above heat source part is, A pair of first sections (511a) extending in a straight line and parallel to each other; A blower including a pair of second sections (511b) extending in a curved shape and connecting both ends of the pair of first sections (511a).

8. In paragraph 1, The coil of the above heat source part is, A blower forming a plurality of unit heat sources, each of which is wound around a plurality of axes arranged along the length direction of the heat source section.

9. In paragraph 1, The above coil is a blower that is a self-bonding coil.

10. In paragraph 1, The above heating part is a blower separated from the heat source part.

11. In paragraph 10, The above blower, A blower further comprising an insulating part disposed between the heating part and the heat source part and in close contact with the heating part.

12. In paragraph 1, The above heat dissipation unit is a blower extending in a direction away from the heating unit.

13. In paragraph 1, The above heat dissipation unit is a blower including a fin having one end in contact with the heating unit and the other end forming a pitch.

14. In paragraph 13, The above heat dissipation part, A blower further comprising a connecting heat dissipation part having a heat transfer coefficient greater than a predetermined value, a shape corresponding to the heating part, one surface of which is in contact with the heating part, and the other surface of which is in contact with one end of the fin.

15. A case equipped with an inlet and an outlet; A blower fan placed inside the above case; Including an induction heating heater placed inside the case, The above induction heater, A coil plate in the shape of a plate formed by winding a coil multiple times in a radial direction around a predetermined axis; A blower comprising a heating plate arranged parallel to the coil plate, inductively heated by the coil plate, and including a heat dissipation section formed to protrude toward the opposite side of the coil plate.

16. In paragraph 15, The above heating plate is a blower made of an electrically conductive material and has a thermal conductivity of a predetermined value or less.

17. In paragraph 15, The above heating plate, a first heating plate having one side facing the coil plate; and A blower comprising a second heating plate connected to the other surface of the first heating plate while forming a plurality of heat dissipation sections having a width that is a length extending along the longitudinal direction of the first heating plate and a pitch that is a height that protrudes vertically from the first heating plate.

18. In paragraph 15, The above heat dissipation section is a blower formed by a portion of a single heating plate.

19. Low case equipped with suction port; A blower fan placed inside the above low case and forcing air upward; A tower case extending vertically, having a lower portion connected to the low case, and having a discharge port extending vertically arranged; and It comprises an induction heating heater positioned inside the tower case and extending vertically, The above induction heater, A heat source part in which a coil is wound; It includes a heat exchanger that is inductively heated by the above heat source and dissipates heat through airflow discharged from the blower fan. The above induction heater, A blower in which a virtual comparative heater including a comparative heat source part that receives current and generates heat, a comparative heat exchange part that radiates heat from the comparative heat source part to an air current, and an insulating intermediate path part that is arranged between the comparative heat source part and the comparative heat exchange part and conducts heat from the comparative heat source part to the comparative heat exchange part, the distance at which the induction heater is spaced inwardly from the tower case is smaller than the distance at which the comparative heater is spaced inwardly from the tower case.

20. In paragraph 19, The above discharge port is positioned rearwardly from the central axis (V) that penetrates the tower case vertically, The above induction heating heater is placed between the central axis (V) and the discharge port, A blower in which the left-right length of the above induction heater is formed longer than the left-right length of the above virtual comparison heater.

21. In paragraph 19, A blower in which the temperature of the heat exchanger is lower than that of the comparative heat exchanger when the temperature of the airflow discharged by the blower is the same.

22. Low case equipped with suction port; A blower fan placed inside the above low case and forcing air upward; A tower case extending vertically, having a lower portion connected to the low case, and having a discharge port extending vertically arranged; and Including an induction heating heater placed inside the above tower case, The above induction heater, A heat source part in which a coil is wound and extended upward and downward; and It includes a heat exchanger that extends vertically and faces the heat source, is inductively heated by the heat source, and radiates heat through airflow discharged from the blower fan. The above heat source part is, The above coils each include a plurality of unit heat sources that can be individually wound and supplied with electricity, A blower in which the above-mentioned plurality of unit heat sources are arranged in a vertical direction.

23. In paragraph 22, The above heat exchanger includes a plurality of unit heat exchangers each corresponding to the plurality of unit heat source units, A blower in which the above-mentioned plurality of unit heat exchangers form a single continuous appearance.

24. In paragraph 22, A blower in which at least some of the above-mentioned plurality of unit heat source parts have coils having different numbers of turns.

25. In paragraph 24, A blower in which the number of coil turns increases as the plurality of unit heat sources are arranged closer to the blower fan.

26. In paragraph 22, The above multiple unit heat source parts are, A blower that is supplied with electricity so that it forms a stronger magnetic flux the higher it is placed.

27. In paragraph 22, The above multiple unit heat source parts are, A blower that is supplied with electricity so that it forms a stronger magnetic flux the further it is placed on the lower side.

28. In paragraph 22, Among the above multiple unit heat sources, For the unit heat source placed below a predetermined height, a magnetic flux of a predetermined size or less is formed. A blower that forms a magnetic flux exceeding the specified size for a unit heat source positioned above the specified height.

29. Low case equipped with suction port; A blower fan placed inside the above low case and forcing air upward; A first tower positioned on the upper side of the above low case and extending vertically; A second tower disposed on the upper side of the low case, extending vertically, and spaced laterally from the first tower to form a blowing space between which air flows; A first discharge port disposed on a wall facing the second tower among the first towers and discharging air inside the first tower into the blowing space; A second discharge port disposed on a wall facing the first tower among the second towers and discharging air inside the second tower into the blowing space; A first induction heater disposed inside the first tower; Including a second induction heater disposed inside the second tower, A blower in which the magnetic flux generated by the wound coil within the first induction heating heater and the magnetic flux generated by the wound coil within the second induction heating heater are formed in a direction in which they are mutually amplified.

30. In paragraph 29, A blower in which a first axis, which is the center around which the coil of the first induction heating heater is wound, and a second axis, which is the center around which the coil of the second induction heating heater is wound, are arranged on the same line.

31. In paragraph 29, The first tower includes a first inner wall facing the blowing space and having the first discharge port arranged therein, and a first outer wall facing the first inner wall and forming an internal space of the first tower therebetween. The second tower includes a second inner wall facing the blowing space and having the second discharge port arranged therein, and a second outer wall facing the second inner wall and forming an internal space of the second tower therebetween. The first induction heater is positioned closer to the first inner wall than to the first outer wall, A blower in which the second induction heater is positioned closer to the second inner wall than to the second outer wall.

32. In paragraph 29, The first tower includes a first inner wall facing the blowing space and having the first discharge port arranged therein, and a first outer wall facing the first inner wall and forming an internal space of the first tower therebetween. The second tower includes a second inner wall facing the blowing space and having the second discharge port arranged therein, and a second outer wall facing the second inner wall and forming an internal space of the second tower therebetween. A blower in which the first inner wall and the second inner wall are made of a material that allows magnetic flux to pass through.

33. In paragraph 32, A blower in which the first outer wall and the second outer wall are made of a material that shields magnetic flux.

34. In paragraph 29, The above blower, Further comprising an inverter for supplying alternating current to the first induction heating heater and the second induction heating heater, The above inverter is provided in a single unit and is a blower placed in the above low case.

35. In paragraph 34, The above first and second induction heaters are blowers electrically connected in series.

36. In paragraph 34, The above first and second induction heaters are blowers electrically connected in parallel.

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