KR20250106470A - Blower - Google Patents

Abstract

A blower according to the present invention comprises a case having an intake port and an exhaust port, a blower fan disposed inside the case, and an induction heating heater disposed inside the case, wherein the induction heating heater comprises a heat source portion having a coil wound therein, a heating portion inductively heated by the heat source portion, and a heat dissipation portion in contact with the heating portion and dissipating heat into an airflow discharged from the blower fan, thereby enabling heat formed by induction heating to be smoothly dissipated into the airflow, thereby overcoming the limitations of conventional induction heating heaters that have made it difficult to use in the field of blowers, and as an induction heating-type blower capable of directly heating the heating portion without a separate intermediary between the heat source and the heating portion, high energy efficiency and precise warm air can be realized.

Description

Blower

The present invention relates to a blower capable of discharging hot air through an induction heater.

A blower is a mechanical device that drives a fan to create airflow. Conventional blowers that implement warm air often use heaters that use electricity as a heat source. This is because using electricity allows for product miniaturization compared to using fuel such as oil or gas as a heat source. These electric heaters (e.g., Korean Patent No. 2013-0033435), regardless of differences in detailed structures, generally use the principle that heat generated from a heat source is conducted and moved 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.

Specifically, the sheath-fin heater illustrated in (a) of Fig. 17 and the PTC (Positive Temperature Coefficient) heater illustrated in (b) can be cited 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 member. 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 member. (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 of low thermal efficiency and high power consumption.

Meanwhile, among existing blowers, tower-type blowers with a vertically elongated exterior in the shape 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 receiving 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 can evenly discharge the discharge air in the vertical direction of the indoor space.

However, when installing a warm air function 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 relative to the vertical length, while also maintaining a distance from the blower case for safety reasons.

Meanwhile, if warm air is uniformly discharged from the entire area of the vertically elongated discharge ports of a tower-type or twin-tower-type blower, there is a problem that the warm air may directly reach the user's face, thereby increasing the dryness felt by the user in winter.

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 part 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.

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 require the shape of the coil (working coil) and the shape of the heating element to be properly designed so that the heating element can be inductively heated smoothly.

In addition, if we look at the induction range in the kitchen, which is a typical field in which conventional induction heating heaters are utilized, 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. Accordingly, assuming that the induction heating heater is placed 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 since only a part of the magnetic flux emitted from the coil contributes to induction heating, the problem of reduced energy efficiency may occur due to the inevitable leakage magnetic flux.

Citation 1: Korean Patent Registration No. 2013-0033435 (2011.07.01) Citation 2: Japanese Patent No. 2013-213454A (2012.04.03) Citation 3: US Patent No. 10184495 B2 (2013.11.27)

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 body.

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

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.

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.

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

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.

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 heater of each twin tower.

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.

A blower according to a first embodiment of the present invention for solving the above problem includes a case having an intake port and an exhaust port, a blower fan disposed inside the case, and an induction heater disposed inside the case.

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

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.

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.

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.

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.

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

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.

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.

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

In addition, the induction 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 through an airflow discharged from a blower fan.

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 wind with the same temperature conditions is placed.

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

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 that takes into account the shape of the discharge port and the internal flow.

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

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

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

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 heater is used alone.

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

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

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.

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

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

Fourth, a blower according to one embodiment of the present invention removes the core layer of a conventional induction heater and arranges a heating part on both sides so that all magnetic flux on both sides of the wound coil is utilized for induction heating, thereby reducing leakage magnetic flux and improving space utilization and energy efficiency of the blower.

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 a heat source part of an induction heater into a plurality of coil groups that are electrically connected in parallel and sectioning them.

Sixth, the blower according to one embodiment of the present invention can reduce the surface temperature of the heater compared to a conventional heater by using an induction heater, thereby reducing the required distance between the case and the heater and improving the space efficiency of the blower.

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

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.

FIG. 1 is a perspective view of a blower according to one embodiment of the present invention.
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.
Figure 3 is a front view of Figure 2.
FIG. 4 is a schematic comparison between an induction heater according to an embodiment of the present invention and a hypothetical comparison heater in the plan view of FIG. 2.
Figure 5 is a cross-sectional view of Figure 2.
Figure 6 is an internal cross-sectional view of Figure 3.
Figure 7 is a schematic diagram showing how the first and second induction heating heaters of the blower operate according to one embodiment of the present invention.
Figure 8 is a drawing viewed from XI-XI of Figure 3.
Figure 9 is a drawing viewed from IX-IX of Figure 3.
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.
Figure 11 is a schematic diagram showing a blower according to one embodiment of the present invention implementing a forward wind.
Figure 12 is a schematic diagram showing a blower implementing a rise according to one embodiment of the present invention.
Figure 13 is a perspective view of an induction heater according to one embodiment of the present invention.
FIG. 14 is a schematic diagram of an induction heating heater according to various embodiments of the present invention.
Figure 15 is a plan view looking at cross-section XX' of Figure 13.
Figure 16 is a conceptual diagram schematically illustrating cross-section YY' of Figure 13.
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.

The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and the present embodiments are provided only to make the disclosure of the present invention 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 refer to like elements throughout the specification.

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 part by using heat conduction (for example, the above-described sheath-fin heater or PTC heater). In addition, hereafter, for convenience, the term 'general blower' or 'conventional blower' may refer to a hot air blower 2 equipped with the above-described conventional heater.

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

<Example 1>

The blower (1) according to this embodiment is described on the premise that it is not limited to a case (100) of a specific shape 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 illustrated 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.

The case (100) is provided with an inlet (155) and an outlet (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 inlet (155) to the outlet (117, 127).

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) can be placed between the blower fan (320) and the discharge port (117, 127).

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 the object by 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.

The induction heating heater (500) includes a heat source part (510) in 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 to 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 to 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).

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.

The heating unit (530) may be an electrically conductive material in order to react to induction heating. The heating unit (530) may use stainless steel of the 400 series or a material having magnetism (nickel, cobalt, iron, copper, etc.). For example, the heating unit (530) may be made of SUS430 material and have a thermal conductivity coefficient of 58 W/mK.

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

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.

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

The insulation (540) may be placed between the heating unit (530) and the heat source unit (510). The insulation (540) may be in close contact with the heating unit (530). The insulation (540) may prevent the heat of the heating unit (530) from being transferred to the heat source unit (510). For example, a Mica sheet or Mica tape may be used as the insulation (540).

Referring to FIG. 16, the insulation part (540) may be arranged on the inner side of the heating part (530) facing the coil (511). Depending on the material of the insulation part (540), it may vary. 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 to be spaced apart from the insulation part (540). It is preferable that the distance between the coil (511) and the insulation part (540) is set to 3 times or less of the maximum winding diameter of the coil (511).

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).

That is, the induction heating heater (500) is provided with a heat dissipation part (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.

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

For example, the heat dissipation member (550) may be a fin having one end in contact with the heating member (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 that of 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 member (510) to the valley of the fin may be similar to the height of the fin.

The heat dissipation member (550) may be a material having a heat transfer coefficient greater than a predetermined value. For example, the heat dissipation member (550) may be an aluminum material known to have a heat conductivity coefficient of 180 W/mK. In particular, aluminum material has excellent manufacturability compared to SUS, and may be advantageous in shape processing to expand the heat exchange area.

The heat dissipation member (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 member (550) has a louver fin shape, the space between the pitches of the louver fins may be extended 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.

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 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))

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

Meanwhile, when configuring the heat dissipation unit (550), the heat dissipation unit (550) may be configured using a material capable of induction heating, or the heat dissipation unit (550) may be configured using the heating unit (530) described above.

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 airflow.

The heat dissipation section (534) may also 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) Or, for example, the heat dissipation section (534) may be a slit shape formed by cutting a portion of the heating plate (533) in a predetermined direction and bending it to have a height.

Alternatively, it may be formed by processing one heating plate (533) by providing a plurality of heating plates (533). For example, it may be formed by providing a first heating plate (553a) having one side facing the coil plate (515), and a second heating plate (553b) connected to the other side 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)

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.

Meanwhile, the blower (1) according to the present embodiment may further include a control unit (not shown) that controls the size 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 hot air temperatures. For example, the control unit may include an inverter (not shown) and an EMI board (not shown).

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.

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.

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.

<Second embodiment>

The blower according to the present embodiment may be a blower (i.e., a tower-type blower) that is formed to be long 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.

It is obvious that matters regarding the first embodiment described above, which do not conflict with matters described in this embodiment, can be applied to this embodiment without separate mention. Conversely, it is obvious that matters described in this embodiment can be applied to the first and third embodiments as long as they do not conflict.

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.

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).

The discharge ports (117, 127) can be extended vertically. The discharge ports (117, 127) can be extended vertically to correspond to the length of the upper case (140) in the vertical direction. The discharge ports (117, 127) can be arranged on the circumferential surface of the upper case (140).

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

A structure utilizing conventional induction heating (e.g., induction for kitchen appliances) is generally used only in one direction (cross-sectional area) based on 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. ((c) of Fig. 17)

However, when arranging a cross-sectional induction heater in a blower (1), a dead space may occur on the side where the core layer (700) is arranged, which may reduce space utilization and flow efficiency. Furthermore, even if cross-sectional induction heaters are arranged face to face to design a double-sided type (see (c) of FIG. 17), another core layer (700) must be provided for this purpose, and thus, the volume of the entire heater may become excessive and the structure may become complicated, which may cause problems.

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

The heat source unit (510) may include one side (510a) and the other side (510b) that are arranged opposite to each other based on 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 symmetrical to each other based on 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)

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 a predetermined value or higher. 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 600 or higher.

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 arranging high-magnetic-rate heating plates on both sides, the magnetic flux on both sides based on the wound coil is utilized for induction heating, thereby reducing leakage flux more effectively, increasing the coupling coefficient between the two opposing heating sections, and effectively securing inductance and resistance values, and by removing the core layer, the double-sided induction heating heater can be implemented space-efficiently.

Meanwhile, it is obvious that the heat dissipation unit (550) of the first embodiment described above may be transformed in two ways as 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 to each other with respect to the heat source unit (510).

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).

The coil (511) in the heat source part (510) may be wound to form a plate shape (for example, a 'pancake-shaped coil' or a 'flat coil'). Accordingly, the coil housing (517) that forms the outer appearance of the heat source part (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 part (510) may be one of the two sides of the plate shape. The other side (510b) of the heat source part (510) may be the other side of the two sides of the plate shape. The plate-shaped heat source part (510) may be referred to as a coil plate (515).

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).

The first and second heating units (530) may be plate-shaped and perpendicular to the axis (Ax) on which the coil (511) is wound. The first heat dissipation unit (551) may form a height in a vertical direction from the first heating unit (531). The second heat dissipation unit (552) may form 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).

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

The heat dissipation member (550) may extend in a direction intersecting the longitudinal direction of the discharge ports (117, 127). A plurality of heat dissipation members (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 member (550), and may be distributed and flowed in an equal amount to the discharge ports (117, 127) formed vertically.

In configuring the above plate-shaped heat source part (510) (coil plate (515)), the coil (511) may be wound on the same plane centered on a single axis (Ax). 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).

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.

In addition, as described later, it was experimentally found that, compared to the case where each coil (511) is wound on the same plane around multiple axes, 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.

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 may include a first coil plate (515a) in which a coil (511) is wound in a single layer, and a second coil plate (515b) in 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 which the coils are overlapped.

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 in securing reactance and equivalent resistance compared to when they are connected in parallel.

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.

At this time, the first heating unit (531) may be placed facing the first wall (115, 125), and the second heating unit (532) may be placed facing the second wall (114, 124).

By arranging the double-sided induction heater (500) in this manner, a first heating path (E1) is formed between the first heating unit (531) and the first wall (115, 125) in which some 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.

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

That is, compared to when applying a conventional cross-sectional induction heater, the dead space inside the blower can be eliminated more easily, and both sides of the flow path around the induction heater can be divided into heating paths in which the flow is heated.

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, even if a separate structure for fixing the shape of the wound coil is not provided, the shape of the wound coil can be maintained, so that the structure of the heat source part can be simplified.

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 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 heater, which can be variously modified as needed.

Hereinafter, 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.

The 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 a vertically extending discharge port (117, 127) is formed in an upper case (140), the flow in the internal space of the upper case (140) can exhibit a difference in flow rate depending on the distance from the blower fan (320). In consideration of this difference in flow rate, the plurality of unit heat sources (S1 to S5) can be arranged along the longitudinal direction (i.e., vertical direction) of the discharge port (117, 127). Each part of the heating section (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).

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.

In particular, the induction heating heater (500) is advantageous over conventional heaters in that it radiates less heat around the subject matter and thus can intensively heat a targeted area; the target temperature can be effectively reached due to the low specific heat of the material constituting the heating portion (530) of the induction heating heater (500); and the temperature is controlled purely electrically through the size and frequency of the alternating current. Therefore, the method of individually controlling the heat source portion (510) of the induction heating heater (500) by arranging it as necessary as described above is very sophisticated and can implement various types of heater operation.

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).

For example, the 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). Or, 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 greater can be formed for a unit heat source positioned higher than the predetermined height. Accordingly, the farther a unit heat source is from the fan, the more strongly it heats the flow, thereby compensating for a decrease in the airflow rate due to an increase in the distance from the fan, while providing uniform warm air in the vertical direction.

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 discharge port (117, 127), which is an 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.

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

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), the heat exchange unit (520) may have, for example, each section of a single heating plate (533) function as a unit heating unit. This is because, when an alternating current is applied to a specific unit heat source (S1), only a specific area (Q1) of the heating unit corresponding to the corresponding 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 sources in terms of form.

Meanwhile, considering the flow characteristics in the blower, the unit heat sources (S1 to S5) may be differentiated through 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).

Meanwhile, in general, when installing a heater in a blower, it is necessary to secure a distance greater than a certain distance between the casing and the heater for the safety of the user and the durability of the blower casing. In general, the required distance can be narrower as the temperature of the heater surface becomes relatively lower.

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.

The comparison heater (600) includes a comparison heat source part (610) that receives electric current and generates heat. The comparison heater (600) includes a comparison heat exchange part (620) that radiates heat of the comparison heat source part (610) to an air current. The comparison heater (600) includes an insulating intermediate path part (660) that is arranged between the comparison heat source part (610) and the comparison heat exchange part (620) and conducts heat of the comparison heat source part (610) to the comparison heat exchange part (620).

For example, referring to (a) of FIG. 17, the comparison heater (600) may be a sheath-fin heater, the comparison heat source part (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.

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.

At this time, the distance (D1, D2) at which the induction heating heater (500) of the present invention is spaced inwardly from the tower case (140) may be smaller than the distance (Di1, Di2) at which the comparison heater (600) is spaced inwardly 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 comparative heat exchange part (620) of the comparative heater (600).

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 left-right length (which can be understood as a 'width') of the induction heating heater (500) can be formed longer than the left-right length of the virtual comparison heater (600).

Specifically, when it is assumed that the two implement the same temperature discharge wind 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) as a heat transfer path exists additionally between the comparative heat source part (610) and the comparative heating part (630), whereas, in the case of the induction heating heater (500) of the present invention, the heating part (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).

In addition, the difference in the distance between the case and the heater due to the difference in surface temperature may be understood as a difference in the heater's occupancy rate in the internal space. Since the heat dissipation part (550) of the induction heating heater (500) is configured to be wider than the non-heat dissipation part (650) of the comparison heater (600), the heat exchange area is expanded, which further improves the heat exchange efficiency, and this may be understood as a virtuous cycle (positive feedback) that lowers the required heater temperature value again.

<Third embodiment>

It is obvious that matters regarding the first and second embodiments described above, which do not conflict with matters described in this embodiment, can be applied to this embodiment without separate mention. For example, matters regarding the low case (150) and the blower fan (320) can be applied in the same manner as in the second embodiment, and therefore descriptions are omitted. In addition, conversely, it is obvious that matters described in this embodiment can be applied to the first and second embodiments as long as they do not conflict.

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 arranged to branch off from a blower fan (320). Hereinafter, for convenience, the description will be based on the twin tower type blower (1).

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 an internal space of the first tower (110), can be communicated with the internal space of the low case (150). Air supplied from the blower fan (320) can be discharged to the first discharge port (117) through the first internal space (103a).

The second tower (120) is placed on the upper side of the low case (150). The second tower (120) extends vertically. The second tower (120) is spaced laterally from the first tower (110) to form a blowing space (105) through which air flows. The blowing space (105) can be opened in the front, rear, and upper directions.

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 communicated with the internal space of the low case (150). Air supplied from the blower fan (320) can be discharged to the second discharge port (127) through the second internal space (103b).

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.

The first discharge port (117) is arranged in 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 in 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).

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).

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) diverges toward the first inner wall (115), the magnetic flux of the second induction heating heater (502) can be transferred so as to converge from the second inner wall (125). For example, when the magnetic flux of the first induction heating heater (501) converges from the first inner wall (115), the magnetic flux of the second induction heating heater (502) can be transferred so as to diverge toward the second inner wall (125).

Accordingly, the disadvantage of induction heaters that consume more power than conventional heaters can be supplemented, and the energy efficiency of twin tower blowers can be improved.

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)

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.

In addition, when the first discharge port (117) is arranged in 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 in 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 air discharged from both discharge ports (117, 127) join, and thus 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.

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).

The first inner wall (115) can be more actively cooled by the air discharged from the first discharge port (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 prevented more efficiently.

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.

The first and second inner walls (115, 125) may be made of a material with high 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.

The upper surface of the induction heating heater (500) may be positioned in the central portion in the front-back direction in 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 of the lower surface of the induction heating heater (500). In other words, the induction heating heater (500) may be positioned so that the lower surface is positioned rearward of the upper surface.

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

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.

Accordingly, the heat source part (510) and the heating part (530) may be arranged to have a constant incline with respect to the vertical axis (V). The heat source part (510) and the heating part (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 part (550) may be extended perpendicular to the extension direction of the heat source part (510) and the heating part (530). A plurality of heat dissipation parts (550) may be arranged in the longitudinal direction of the discharge port (117, 127).

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

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 surface of the induction heating heater (500).

The amount of air flowing at the bottom inside 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 may be compensated for, thereby preventing pressure loss and improving blowing efficiency.

Meanwhile, the induction heating heater (500) may further include a flow shielding member (900) that bypasses the heater and shields air from flowing directly to the outlet (117, 127). The flow shielding member (900) is 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).

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 as for the inverter.

The first and second induction heating heaters (501, 502) may be electrically connected in series. At this time, 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. At this time, when selectively controlling the first and second induction heating heaters (501, 502), parallel connection may provide a simpler electrical structure than series connection.

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)

<Example 4>

It is obvious that matters relating to the first, second, and third embodiments described above, which do not conflict with matters described in this embodiment, can be applied to this embodiment without separate mention. In addition, conversely, it is obvious that matters described in this embodiment can be applied to the first, second, and third embodiments as long as they do not conflict.

When the heat dissipation unit and the heating unit are configured using 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.

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 occur between the two plates due to the difference in the thermal expansion coefficient when the heater is in operation, which may cause a problem in that the thermal efficiency is reduced.

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.

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

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, changes 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.

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, the description will be 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.

The heat dissipation member (550') needs to secure a predetermined thickness (T) in order to maintain its shape during a high-temperature thermal spray coating process. The heat dissipation member (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.

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

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.

<Common Matters>

Below, matters relating to a blower which may be understood as a description of at least one of the above-described multiple embodiments are described.

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

*Air discharged in the first air discharge direction (S1) may be referred to as forward wind. Air discharged in the second air discharge direction (S2) may be referred to as rising wind.

Forward wind should be understood as the main airflow of air flowing forward, rather than meaning that air flows only in the forward direction. Similarly, upwind should be understood as the main airflow of air flowing upward, rather than meaning that air flows only upward.

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.

In contrast, if the upper and lower widths are different, the flow velocity on the wider side may be formed lower, and a velocity deviation may occur based on the up-down direction. If a velocity deviation of air occurs in the up-down direction, the air arrival length may vary.

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.

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.

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).

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.

The first tower (110) and the second tower (120) may be formed in a streamlined shape with respect to the direction of air flow. Specifically, the first inner wall (115) and the first outer wall (114) may be formed in a streamlined shape with respect to the front-back direction, and the second inner wall (125) and the second outer wall (124) may be formed in a streamlined shape 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.

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

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.

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

The first discharge port (117) and the second discharge port (127) can be placed between B0 and B2.

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.

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

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.

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

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

The outer wall (114)(124) can induce the Coanda effect for indirect airflow and guide the indirect airflow to the shear (112)(122).

The upper part 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 to the open upper part of the blowing space. The upward airflow can suppress the discharged air from flowing directly to the user and actively convect the indoor air.

By forming the vertical length of the first discharge port (117) and the second discharge port (127) 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.

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.

The blower (1) may be a columnar shape with a diameter that becomes smaller toward the top. The blower (1) may have an overall cone or truncated cone shape. If the cross-section becomes narrower toward the top, there is an advantage in that the center of gravity is lowered and the risk of overturning due to external impact is reduced.

The outer surfaces of the low case (150) and the tower case (140) can be formed continuously. In particular, the lower part of the tower base (130) and the upper part of the low case (150) are in close contact, and the outer surface of the tower base (130) and the outer surface of the low case (150) can form a continuous surface. To this end, the lower diameter of the tower base (130) can be formed to be the same as or slightly smaller than the upper diameter of the low case (150).

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

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, a discharge port (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).

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

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 left-right symmetrically with respect to the center line L-L'. In particular, the first discharge port (117) and the second discharge port (127) may be arranged left-right symmetrically with respect to the center line L-L'.

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

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.

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

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

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).

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 a hole shape, and the shape of the suction port (155) can be formed in various ways.

The filter (200) may be formed in a cylindrical shape with vertical hollows formed inside. The outer surface of the filter (200) may face the suction port (155). The air in the room 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.

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).

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

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

The motor housing (330) may have a shape that surrounds the entire fan motor (310). Since the motor housing (330) surrounds the entire fan motor (310), the flow resistance with respect to air flowing from the bottom to the top can be reduced.

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

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).

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).

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.

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.

Air passing through the filter (200) can be sucked into the inside of the shroud and then pressurized and flowed by the rotating blade. The hub can be placed on the upper side of the blade, and the shroud can be placed on the lower side of the blade. 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.

A radial fan can be used as the blower fan (320). A radial fan has the characteristic of sucking air in through the center of the shaft and discharging air in the radial direction, but the discharged air is formed at an angle relative to the axial direction.

Since the overall air flow is from bottom to top, if 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.

A radial fan can minimize air flow loss by discharging air radially upward.

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

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).

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).

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).

In order 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).

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 discharge space (103) to the first and second internal spaces (103a, 103b).

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

Air discharged from the first discharge port (117) can flow along the first inner wall (115) by the Coanda effect and can flow toward the shear (112).

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).

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

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

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.

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

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).

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.

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).

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

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

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).

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).

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).

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 disposed at the air discharge side of the first discharge port (117), and a second discharge guide (174) formed at the first discharge port (117) and disposed at the air discharge side opposite to the first discharge port (117).

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

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).

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 that is continuous with the first inner wall (115). In particular, the outer surface (172a) may form a curved surface that is continuous with the outer surface of the first inner wall (115).

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).

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).

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 interval (175). The discharge interval (175) can form a predetermined channel.

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).

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).

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).

The center of curvature of the outer surface (172a) of the first discharge guide (172) is located 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 located on the side of the first discharge guide (172) and may be formed inside the first discharge space (103a).

The second discharge case (180) may include a first discharge guide (182) that forms a second discharge port (127) and is arranged on the air discharge side of the second discharge port (127), and a second discharge guide (184) that forms a second discharge port (127) and is arranged on the opposite air discharge side of the second discharge port (127).

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

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

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 a horizontal air flow flowing through the blowing space (105) into an upward air flow.

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).

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.

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.

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.

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).

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 long in the vertical direction. The first board slit (119) and the second board slit (129) can be arranged to be inclined with respect to the vertical direction (V).

The front end (112) of the first tower (110) may be formed at a 3-degree incline, and the first board slit (119) may be formed at a 4-degree incline. The front end (122) of the second tower (120) may be formed at a 3-degree incline, and the second board slit (129) may be formed at a 4-degree incline.

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

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

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

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.

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).

When the airflow converter is in operation, 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).

The first guide board (411) and the second guide board (412) may 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 moved linearly in a sliding manner to protrude into the blowing space (105).

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).

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.

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

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).

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).

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).

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

The guide board (410) may be arranged parallel to the board slit. The guide board (410) may be arranged perpendicular to the ground, but it is preferable to be arranged 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 arranged to have a 4 degree incline from the ground.

The guide board (410) may include a radially convex surface. The guide board (410) may be formed in an arc shape so that the center of curvature is positioned 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 surface to correspond to the curved surface. The front surface of the board guide (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) may be stably guided.

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 when 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.

FIG. 11 may be an exemplary diagram illustrating the horizontal airflow of a blower according to an embodiment of the present invention.

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).

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

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

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).

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.

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.

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

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).

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).

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.

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

A person having ordinary skill in the art to which the present invention pertains may understand that the present invention may be implemented in other specific forms without changing the technical idea or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the scope of the claims and the equivalent concepts thereof should be interpreted as being included in the scope of the present invention.

Claims (12)

A case having 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;
It includes a heating part that is inductively heated by the above heat source part,
The above heat source part is,
Including one side and the other side which are arranged opposite to each other based on the above coil,
The above heating part,
A first heating unit arranged on one side of the above heat source unit; and
A blower including a second heating unit arranged on the other side of the heat source unit. In paragraph 1,
The above heat source part is formed in a plate shape,
Between the first heating unit and the case, a first heating path is formed in which a portion of the airflow discharged from the blower fan and flowing toward the discharge port is heated.
A blower in which a second heating path is formed between the second heating section and the case, in which the remainder of the airflow discharged from the blower fan and flowing toward the discharge port is heated. In paragraph 1,
A blower in which the investment rate of the first and second heating sections is greater than a predetermined value. In the third paragraph,
The above blower is a blower that does not include a ferrite core. In paragraph 1,
The above heat source part is,
A first coil plate in which the above coils are wound in a single layer;
A second coil plate is included in which the coils are wound in a single layer around the same axis as the winding axis of the first coil plate,
A blower in which the first and second coil plates are arranged so as to be covered. In paragraph 5,
A blower in which the first coil plate and the second coil plate are electrically connected in series. In paragraph 1,
The above heat source part is a coil plate in which the coil is wound in a single layer,
A blower in which the above coils are wound in the same plane around a single axis. In paragraph 1,
The above heat source part is a blower in which the coil is a self-bonding coil. In paragraph 1,
The above case is,
A low case having an intake port and accommodating the blower fan inside;
A first tower positioned on the upper side of the above low case and extending vertically; and
A second tower is disposed on the upper side of the above low case, extends vertically, and is spaced laterally from the first tower to form a blowing space between which air flows.
The above outlet is,
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; and
A second discharge port is disposed on a wall facing the first tower among the second towers and discharges air inside the second tower into the blowing space.
The above induction heater,
A first induction heater disposed inside the first tower;
A second induction heater disposed inside the second tower; and
The above blower,
A blower further comprising a control unit for controlling alternating current supplied to each of the first and second induction heating heaters. In Article 9,
The above control unit is a blower that selectively supplies alternating current to only one of the first induction heating heater and the second induction heating heater. In Article 9,
The above control unit is a blower that supplies alternating current so that the temperatures of the first induction heating heater and the second induction heating heater are different from each other. In Article 9,
The above control unit is a blower that adjusts the frequency of the alternating current to selectively implement any one of a plurality of warm air temperatures.