Drying machine

Abstract

A dryer (1) is provided with: an impeller (10) having a plurality of blades (11); and a heater (20) disposed on the inside of the plurality of blades (11).

Description

Technical Field

[0001] The present invention relates to a drying machine. Background Art

[0002] The dryer is used for hair, for example (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2013-75139 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] For example, hair dryers are required to have excellent quick-drying properties. Consequently, dryers are required to have a structure that can improve quick-drying properties.

[0008] Therefore, one example of the technical problem of the present invention is to provide a dryer capable of improving quick-drying properties.

[0009] Solutions for solving problems

[0010] A dryer according to one aspect of the present invention includes: an impeller having a plurality of blades; and a heater disposed inside the plurality of blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a perspective view schematically showing the appearance of a dryer according to an embodiment of the present invention.

[0012] Figure 2 This is the main view of the dryer.

[0013] Figure 3 This is the rear view of the dryer.

[0014] Figure 4 This is the right side view of the dryer.

[0015] Figure 5 This is the left side view of the dryer.

[0016] Figure 6 This is a top view of the dryer.

[0017] Figure 7 This is a bottom view of the dryer.

[0018] Figure 8 It is a cross-sectional view showing a cross section perpendicular to the axis of the dryer.

[0019] Figure 9 It means the dryer is running along Figure 4 A cross-sectional view of the section taken along line AA.

[0020] Figure 10 This is a perspective view of the housing in the dryer.

[0021] Figure 11 This is a perspective view of the dryer with the main body of the housing removed.

[0022] Figure 12 This is a perspective view of a dryer according to a specific example, with the main body of the casing and the impeller removed.

[0023] Figure 13 Yes Figure 12 A cross-sectional view of a dryer according to a specific example shown is a cross-sectional view taken along a plane perpendicular to the axis.

[0024] Figure 14 It is a cross-sectional view showing a cross section perpendicular to the axis of a dryer including a heater according to a modified example.

[0025] Figure 15 Yes means having Figure 14 The figure is a cross-sectional view of a dryer showing a specific example of a heater, taken along a section perpendicular to the axis.

[0026] Figure 16 This is a dryer according to another embodiment of the installation structure of the heater. Figure 4 A cross-sectional view of the section taken along line AA. DETAILED DESCRIPTION

[0027] Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings. Figure 1 1 is a perspective view schematically showing the appearance of a dryer 1 according to an embodiment of the present invention. Figures 2 to 7 These are the front view, rear view, right view, left view, top view and bottom view of the dryer 1 according to the embodiment of the present invention. Figure 8 It is a cross-sectional view showing a cross section of the dryer 1 perpendicular to the axis line x. Figure 9 It means that the dryer 1 is along Figure 4 The dryer 1 is a hair dryer to be used for hair. The dryer of the present invention is not limited to a hair dryer, and also includes dryers for other purposes.

[0028] like Figures 1 to 9 As shown, the dryer 1 includes an impeller 10 having a plurality of blades 11 and a heater 20 disposed inside the plurality of blades 11. The dryer 1 will be described in detail below. It should be noted that in the drawings, not all components are labeled, and some of the components may be omitted.

[0029] like Figures 1 to 9As shown, the dryer 1 has a housing 30 , and the impeller 10 and the heater 20 are accommodated in the housing 30 . Figure 10 3 is a perspective view of the housing 30. Figure 10 As shown, the housing 30 includes a main body 31 and a handle 32. The main body 31 forms a storage space 31a, which accommodates the impeller 10. The handle 32 serves as a handle for the dryer 1. Two openings are formed in the main body 31 to open the internal storage space 31a. One of the two openings is an inlet 33, and the other is an outlet 34. The inlet 33 is an opening for drawing air from the outside of the housing 30 to the impeller 10. On the other hand, the outlet 34 is an opening for blowing air from the impeller 10 to the outside of the housing 30.

[0030] like Figure 1 、 Figure 8 As shown in FIG. 1 , the inlet 33 is formed on the peripheral surface of the impeller 10 from the outer side. In addition, the inlet 33 is long and extends in one direction. Figure 1 As shown, the inlet 33 is formed in the housing 30 in a manner extending long along the axis x of the impeller 10. It should be noted that the axis x of the impeller 10 is the rotation axis of the impeller 10 and is an imaginary line as described later. In addition, the inlet 33 is formed in the housing 30 in a manner extending long along the circumferential direction around the axis x. Figure 10 As shown in FIG. 1 , the area of ​​the inlet 33 is formed to be large. The inlet 33 is formed to suck a large amount of air into the impeller 10. The inlet 33 is shaped such that half or approximately half of the surface of the impeller 10 is exposed to the space outside the housing 30. Specifically, for example, Figure 1 、 Figure 8 As shown, the inlet 33 is formed in a shape such that the entire or substantially the entire outer peripheral surface of the impeller 10 in the direction of the axis x and half or substantially half of the outer peripheral surface of the impeller 10 in the circumferential direction are exposed to the space outside the housing 30. It should be noted that the size and shape of the inlet 33 may also be other sizes and shapes. In addition, the inlet 33 may be covered by a filter to prevent foreign matter such as dust from entering the accommodating space 31a.

[0031] like Figure 1 、 Figure 8 、 Figure 10 As shown, the outflow port 34 is formed to face the direction intersecting the radial direction of the impeller 10. In addition, the outflow port 34 extends long in one direction, as shown in FIG. Figure 1 As shown, for example, the outlet 34 is formed in the housing 30 in a manner extending long along the axis x of the impeller 10. The outlet 34 extends in the direction of the axis x, for example, by the same or substantially the same amount as the impeller 10. It should be noted that the outlet 34 may also extend in the direction of the axis x in a manner longer or shorter than the impeller 10. Figure 8 As shown, the outflow port 34 is formed, for example, to open a portion of the accommodating space 31a located on the opposite side of the impeller 10 from the inflow port 33 in the radial direction of the impeller 10. It should be noted that the size and shape of the outflow port 34 may be other sizes and shapes. Furthermore, the position of the outflow port 34 relative to the inflow port 33 may be other positions.

[0032] For example, Figure 1 、 Figure 8 、 Figure 10 As shown, a nozzle 35 is formed in the housing 30. The nozzle 35 is formed in a portion of the accommodating space 31a that is located on the opposite side of the inlet 33 relative to the impeller 10 in the radial direction of the impeller 10, and forms a nozzle 35 from the rotation direction R of the impeller 10 (refer to FIG. Figure 8 The outflow port 34 is formed at the front end of the nozzle 35. In addition, the outflow port 34 may also be covered by a filter, a honeycomb or a plurality of grid covers, etc.

[0033] like Figure 8 、 Figure 9 、 Figure 11 As shown, the impeller 10 can rotate with the axis x as the rotation axis. For example, in the impeller 10, the suction direction of the fluid intersects with the blowing direction of the fluid. In this embodiment, in the impeller 10, the suction direction of the fluid is orthogonal to the blowing direction of the fluid. In addition, the impeller 10 extends long along the direction of the rotation axis (axis x direction). In addition, the impeller 10 forms a space S extending along the rotation axis (axis x). It should be noted that Figure 11 It is a perspective view of the dryer 1 in a state where the main body 31 of the housing 30 is removed.

[0034] For example, Figure 8 、 Figure 11 As shown, the blades 11 extend long in one direction. In the impeller 10, the plurality of blades 11 are configured to extend long along the axis x, for example. In addition, in the impeller 10, the plurality of blades 11 are arranged around the axis x, for example. In this way, a space S extending in a substantially cylindrical shape is formed inside the plurality of blades 11. Figure 8 As shown, the cross-section of the blade 11 perpendicular to the axis x is curved (e.g., arc-shaped). The plurality of blades 11 are, for example, arranged parallel or substantially parallel to the axis x. Furthermore, the plurality of blades 11 are arranged at equal or substantially equal angular intervals around the axis x. The impeller 10 is, for example, a cross-flow fan.

[0035] As described above, the heater 20 is disposed on the inner side of the plurality of blades 11. Specifically, Figure 8 、 Figure 9The heater 20 is arranged in the space S inside the impeller 10. The heater 20 extends along the axis x in the space S. In addition, at least a part of the cross section of the heater 20 is not perpendicular to the flow direction of the fluid generated by the impeller. The heater 20 is, for example Figure 8 、 Figure 9 The heater 20 is shown in a columnar shape (eg, cylindrical or substantially cylindrical shape), and the cross-sectional shape of the outer peripheral surface of the heater 20 is circular or substantially circular.

[0036] Figure 12 This is a perspective view of the dryer 1 with the main body 31 of the housing 30 and the impeller 10 removed, and is a view showing a specific example of the heater 20. Figure 13 It means having Figure 12 The cross-sectional view of the dryer 1 showing a specific example of the heater 20 taken along a cross section perpendicular to the axis x is a diagram showing a specific example of the cross section of the heater 20. Figure 12 、 Figure 13 As shown, the heater 20 specifically has a core 24 and a plurality of electric heating wires 26. The core 24 is formed by a rigid member and extends along the axis x. In addition, the core 24 is, for example, Figure 12 The structure shown in FIG. 2 has a plurality of disc-shaped plates (supporting pieces) 25a and a rod (shaft portion) 25b. The rod 25b is a portion that supports the plurality of plates 25a at intervals in the axis x direction. The plate 25a is a portion that supports the heating wire 26 and is formed of a heat-resistant or insulating material such as mica. For example, a plurality of grooves 25c for supporting the heating wire 26 are formed in the plurality of plates 25a. The heating wire 26 is a conductive wire such as a nickel-chromium alloy wire and is arranged along the core 24. For example, the plurality of heating wires 26 are arranged as follows. Figure 12 As shown, the heater 20 is spirally wound around the core 24. The heating wire 26 is supported by being locked in the groove 25c formed in the plate 25a. Specifically, the cross-sectional shape of the heater 20 is, for example, the shape of the projection of the core 24 and the heating wire 26 in the axis x direction. Figure 13 The line indicated by the two-dot chain line in FIG is the cross-sectional outline O, which is the outline drawn by the projection of the core 24 and the heating wire 26 in the direction of the axis x. In other words, the cross-sectional outline O shows the cross-sectional shape of the heater 20.

[0037] The heater 20 is not limited to Figure 12 、 Figure 13 For example, the core 24 of the heater 20 may be a columnar member having a cross-sectional shape corresponding to the cross-sectional shape of the heater 20 and extending along the axis x, as in a modified example of the heater 20 described below. The heating wire 26 is similarly wound around the core 24. In this case, the cross-sectional shape of the heater 20 is also, for example, the shape of the projection of the core 24 and the heating wire 26 in the direction of the axis x.

[0038] like Figure 9As shown, the impeller 10 is supported by the main body 31 in a manner that it can rotate about the axis x in the accommodation space 31a of the main body 31 of the housing 30. In addition, the heater 20 is fixed to the main body 31 in a manner that extends along the axis x in the space S inside the impeller 10. For example, Figure 9 As shown, the rod 25b of the heater 20 is fixed to the main body 31. In addition, in the radial direction, bearings 40 are respectively installed between the two ends of the rod 25b and the two ends of the impeller 10, and the bearings 40 support the impeller 10 rotatably on the rod 25b. In addition, a motor 2 is provided in the handle portion 32 of the housing 30, and the motor 2 is connected to the impeller 10 in a manner that can rotate the impeller 10. Thus, when the motor 2 rotates, the impeller 10 rotates. In addition, the heating wire 26 can be supplied with current by wiring electrically connected to the power supply, and the current is supplied to the heating wire 26 via the wiring, so that the heating wire 26 can generate heat. The wiring enables the heating wire 26 to pass through the interior of the impeller 10 formed in a cylindrical shape and be electrically connected to the power supply. For example, as Figure 9 As shown, a metal wire 28 is electrically connected to the end of each heating wire 26. The metal wire 28 can be electrically connected to an external device (power source) not shown, and current can be supplied to the heating wire 26 from the power source.

[0039] Figure 14 2 is a diagram showing a modification of the heater 20, and is a cross-sectional view showing a cross section of the dryer 1 perpendicular to the axis x, having a heater 21 of this modification. The heater 21 extends along the axis x in the same manner as the heater 20 described above. In addition, the heater 21 has Figure 14 Specifically, for example, the shape of the heater 21 is a blade shape, such as Figure 14 As shown, the cross-sectional shape of heater 21 is a flat, generally elliptical shape formed by combining two curved shapes. Heater 21 has, for example, a pair of end portions 22a and 22b that protrude at an acute angle, and a pair of opposing side surfaces, namely side surfaces 23a and 23b, extending between end portions 22a and 22b. It should be noted that end portions 22a and 22b do not necessarily need to protrude at an acute angle; for example, they may protrude smoothly with rounded corners.

[0040] like Figure 14As shown, the cross section of the heater 21 extends long along the wind path of the impeller 10. It should be noted that the wind path of the impeller 10 is the flow path of the airflow generated by the rotation of the impeller 10. The side surface 23a protrudes to the side opposite to the side surface 23b, and depicts a curved shape (for example, an arc shape) in the cross section of the heater 21. In the cross section of the heater 21, the side surface 23a, for example, depicts an arc along a circle with a large radius of curvature. In this way, the side surface 23a of the heater 21 extends long along the wind path of the impeller 10. The side surface 23b protrudes to the side opposite to the side surface 23a, and depicts a curved shape (for example, an arc shape) in the cross section of the heater 21. In the cross section of the heater 21, the side surface 23b, for example, depicts an arc along a circle with a large radius of curvature, similar to the side surface 23a. In this way, the side surface 23b of the heater 21 extends long along the wind path of the impeller 10.

[0041] The cross section of the heater 21 extends long along the radial direction of the impeller 10. For example, Figure 14 As shown, the central axis of the heater 21 coincides with or is located near the axis x of the impeller 10. Figure 14 As shown, one end 22a of heater 21 faces the direction of fluid suction, while the other end 22b of heater 21 faces the direction of fluid discharge. Thus, side surfaces 23a and 23b of heater 21 follow the flow of fluid generated by impeller 10. It should be noted that the central axis of heater 21 does not necessarily need to coincide with axis x of impeller 10, and heater 21 may be positioned away from the center (axis x) of impeller 10 in cross-section.

[0042] Figure 15 1 is a cross-sectional view showing a cross section perpendicular to the axis x of the dryer 1 having a heater 21 as a specific example, and is a diagram showing a cross section of a specific example of the heater 21. Specifically, Figure 15 As shown, the heater 21 has a core 27 and a heating wire 26. The core 27 is formed of a rigid member such as ceramic and extends along the axis x. The core 27 is a columnar member and does not have a plate, unlike the core 24 described above. The cross-sectional shape of the core 27 is the same as the desired Figure 14 The cross-sectional shape of the heater 21 shown in FIG. For example, the cross-sectional shape of the core 27 is similar or substantially similar to the desired cross-sectional shape of the heater 21. The heating wire 26 is spirally wound around the outer circumference of the core 27. There may be one or more heating wires 26. As with the specific example of the heater 20 described above, the cross-sectional shape of the heater 21 is specifically, for example, the shape of the projection of the core 27 and heating wire 26 along the axis x direction. Figure 15The line represented by the double-dotted line is the cross-sectional contour line O, which is the outline drawn by the projection of the core 27 and the heating wire 26 in the direction of the axis x. That is, the cross-sectional contour line O shows the cross-sectional shape of the heater 21. The outline of the projection of the heater 21 in the direction of the axis x (cross-sectional contour line O) has an end 22a, an end 22b and a side 23a, a side 23b. It should be noted that the heater 21 can also be formed by the core 24 and the heating wire 26 in the same manner as the above-mentioned heater 20. In this case, for example, the shape of the plate 25a of the core 24 is the same as the cross-sectional shape of the core 27, and is a shape corresponding to the cross-sectional shape of the heater 21.

[0043] When the motor 2 of the dryer 1 rotates, the impeller 10 rotates with the axis x as the central axis. Figure 8 As shown, the air outside the housing 30 is sucked into the accommodation space 31a of the housing 30 through the inlet 33. In addition, the air sucked into the housing 30 is blown out of the housing 30 through the outlet 34. Figure 8 As shown in FIG. 1 , the suction direction F1 and the blowing direction F2 of the air flow F generated by the rotation of the impeller 10 intersect. Figure 8 As shown in FIG. 1 , the flow direction of the air entering the housing 30 from the outside through the inlet 33 is shown. In addition, the blowing direction F2 is as shown in FIG. Figure 8 3 shows the flow direction of the air blown out from the housing 30 through the outlet 34 to the outside.

[0044] The impeller 10 forms an airflow through the space S inside the impeller 10, thereby further accelerating the air sucked in through the inlet 33 and blowing it out from the outlet 34. Therefore, the flow rate of the air blown out from the outlet 34 can be increased (inflow ≥ outflow). Furthermore, as described above, the inlet 33 can expose most of the surface of the impeller 10 to the outside of the housing 30, thereby increasing the flow rate of the air sucked in by the impeller 10. Furthermore, a nozzle 35 is formed in the housing 30 to accelerate the air discharged from the impeller 10. In this way, the dryer 1 can increase the flow rate of the air blown out from the outlet 34.

[0045] In addition, if Figure 8 As shown, the cross-sectional shape of the heater 20 is circular or substantially circular, and the portion of the heater 20 that is perpendicular to the flow direction of the airflow F generated by the rotation of the impeller 10 is small. Thus, the heater 20 is shaped to conform to the airflow within the space S of the impeller 10. Therefore, the heater 20 does not interfere with the airflow F generated by the impeller 10 in the space S inside the impeller 10, or can reduce the interference with the airflow F generated by the impeller 10. This can suppress a decrease in the flow rate of the air blown out of the outlet 34. Thus, even though the heater 20 is provided in the space S inside the impeller 10, the dryer 1 can maintain a high flow rate of the air blown out of the outlet 34.

[0046] In addition, when the dryer 1 has a heater 21, as shown in FIG. Figure 14 As shown, in the space S of the impeller 10, the end 22a of the heater 21 that faces the flow of the sucked air has a shape that protrudes at an acute angle, and the end 22b of the heater 21 that faces the direction of air blowing has a shape that protrudes at an acute angle. In addition, the side surfaces 23a and 23b of the heater 21 are shaped to extend along the airflow F within the space S of the impeller 10. Therefore, the heater 21 does not interfere with the airflow F generated by the impeller 10 in the space S of the impeller 10, or can reduce the interference with the airflow F generated by the impeller 10. This can suppress the reduction in the flow rate of the air blown out of the outlet 34. In this way, even if the heater 20 is provided in the space S inside the impeller 10, the dryer 1 can maintain a large flow rate of air blown out of the outlet 34.

[0047] As described above, according to the dryer 1, it is possible to suppress the heaters 20 and 21 from interfering with the function of the impeller 10 that can increase the flow rate of the blown fluid.

[0048] Furthermore, heaters 20 and 21 can contact air over a wide area in space S of impeller 10 without obstructing the flow of air. Therefore, heaters 20 and 21 efficiently heat the air, and the heating efficiency of dryer 1 is high. Furthermore, dryer 1 has excellent power efficiency.

[0049] Furthermore, the heaters 20 and 21 are provided in the space S of the impeller 10, and the housing 30 is miniaturized. In this manner, the dryer 1 can be miniaturized while improving the performance of the dryer.

[0050] As described above, the dryer 1 according to the embodiment of the present invention can increase the flow rate of the blown air, thereby improving the dryer's quick drying performance. In addition, the dryer 1 according to the embodiment of the present invention can improve the efficiency of the heaters 20 and 21 in heating the air, thereby also improving the dryer's quick drying performance.

[0051] It should be noted that the cross-sectional shape of the heater 20 is not limited to the above-mentioned shape or the cross-sectional shape of the heater 21 of the modified example. The cross-sectional shape of the heater 20 may also be other shapes that do not hinder the flow of air in the space S of the impeller 10 or can reduce the obstruction to the flow of air. For example, the cross-sectional shape of the heater 20 is a triangle or a roughly triangular shape that protrudes toward the flow of air sucked into the impeller 10. In addition, the heater 20 may also be set away from the axis x of the impeller 10. In addition, the heater 20 may also be set to be inclined relative to the axis x of the impeller 10. In addition, a plurality of heaters 20 may also be provided in the internal space S of the impeller 10. In addition, the heater 20 may also be provided inside the nozzle 35 (inside the inner surface of the nozzle 35).

[0052] Next, for the above Figure 9 Another embodiment of the assembly structure of the heater 20 shown will be described. Figure 16 This is a diagram showing another embodiment of a dryer 1 having an assembly structure of a heater 20. Figure 4 A cross-sectional view of the section taken along line AA.

[0053] In this embodiment, if Figure 16 As shown, the heater 20 has a member (hereinafter referred to as an end member) 29 mounted on one end 25d of the rod 25b. It should be noted that the one end 25d of the rod 25b is the end of the rod 25b in the direction of the axis x, and is the end on the side opposite to the motor 2. The end member 29 is a member forming a hollow shaft and has a hollow cylindrical shape. The end member 29 is, for example, Figure 16 As shown, it has a cylindrical or substantially cylindrical portion extending along the axis x. The other end portion of the end member 29 in the direction of the axis x (the end portion on the motor 2 side) is fixed to the end portion 25d of the rod 25b. In addition, one end portion of the end member 29 has a portion 29c protruding to the outside of the main body 31. The portion 29c protruding to the outside of the main body 31 has a flange extending in the radial direction, and the flange is opposite to a portion of the main body 31 (side portion 31b) in the direction of the axis x. The rod 25b and the end member 29 extend along the axis x, and an axial member (axial member 20a) is formed in the heater 20. As shown Figure 16 As shown, end member 29 forms one end portion in the x-axis direction of heater 20. In addition, end portion 25e of rod 25b on the other x-axis side (motor 2 side) forms the other end portion in the x-axis direction of heater 20.

[0054] The end member 29 is fixed to the main body 31. For example Figure 16As shown, in the end member 29, the portion between the portion protruding outward from the main body 31 and the portion of the accommodating space 31a is engaged with the main body 31 and fixed to the main body 31. It should be noted that the fixing method of the end member 29 and the main body 31 is not limited to this. For example, the portion of the end member 29 protruding outward from the main body 31 may be fixed to the main body 31. In this way, the end portion on one side in the axis x direction of the heater 20 is fixed to the main body 31 of the shell 30. On the other hand, the end portion 25e of the rod 25b is not fixed to the main body 31. In this way, the end portion on the other side in the axis x direction of the heater 20 is not fixed to the main body 31 of the shell 30. It should be noted that the end portion 25e of the rod 25b may also be fixed to the main body 31.

[0055] like Figure 16 As shown, the impeller 10 has end portions 12 and 13 at both ends in the direction of the axis x. End portions 12 and 13 have inner surfaces 12a and 13a, respectively, which are cylindrical surfaces extending along the axis x. An end member 29 passes within the inner surface 12a of the end portion 12, with the inner surface 12a and the outer peripheral surface 29a of the end member 29 facing each other across an annular gap. Meanwhile, the end portion 25e of the rod 25b is positioned inwardly of the inner surface 13a of the end portion 13 of the impeller 10, with the inner surface 13a and the outer peripheral surface 25f of the end portion 25e facing each other across an annular gap.

[0056] like Figure 16 As shown, a bearing 41 is provided between the outer circumferential surface 29a of the end member 29 of the heater 20 and the inner surface 12a of the end portion 12 of the impeller 10. Furthermore, a bearing 42 is provided between the outer circumferential surface 25f of the end portion 25e of the rod 25b of the heater 20 and the inner surface 13a of the end portion 13 of the impeller 10. In this manner, the ends 12 and 13 of the impeller 10 are rotatably supported about the axis x by the shaft member 20a (end member 29 and rod 25b) of the heater 20 via the bearings 41 and 42, respectively. The impeller 10 is rotatable about the axis x relative to the shaft member 20a (end member 29 and rod 25b) of the heater 20.

[0057] It should be noted that the end portion 12 of the impeller 10 may be rotatably supported by the outer peripheral surface 29a of the end member 29 of the heater 20. In this case, the inner surface 12a of the impeller end portion 12 can slide relative to the outer peripheral surface 29a of the end member 29. Similarly, the inner surface 13a of the end portion 13 of the impeller 10 may be rotatably supported by the outer peripheral surface 25f of the end portion 25e of the rod 25b of the heater 20. In this case, the inner surface 13a of the impeller end portion 13 can slide relative to the outer peripheral surface 25f of the end portion 25e of the rod 25b.

[0058] like Figure 16As shown, the rotating shaft 2a of the motor 2 is connected to the end 13 of the impeller 10. When the rotating shaft 2a of the motor 2 rotates, the impeller 10 also rotates. Figure 16 As shown, a protrusion 13b is provided at the end 13 of the impeller 10. This protrusion 13b is located closer to the motor 2 side than the end 25e of the rod 25b and the bearing 42, and protrudes toward the motor 2 along the axis x. The rotating shaft 2a of the motor 2 is connected to this protrusion 13b. This connection between the rotating shaft 2a of the motor 2 and the end 13 of the impeller 10 stabilizes the position of the end 25e of the rod 25b within the accommodation space 31a via the bearing 42.

[0059] like Figure 16 As shown, the metal wire 28 connected to each heating wire 26 passes through the space 29b inside the hollow end member 29 and extends between the outside of the housing 30 and the storage space 31a. As described above, the metal wire 28 can be electrically connected to an external power source (not shown) outside the housing 30. It should be noted that the metal wire 28 can also be provided on the end 25e side of the rod 25b. In this case, for example, the rotating shaft 2a of the motor 2 is hollow, and the metal wire 28 passes through the space inside the rotating shaft 2a and extends to the outside of the housing 30.

[0060] In this manner, even if the heater 20, which is substantially stationary relative to the impeller 20 together with the housing 30 (does not rotate relative to the housing 30), is disposed in the space S inside the rotating impeller 10, damage to the wire 28 due to the rotation of the impeller 10 is suppressed, and current can be stably supplied to the heater 20. Furthermore, the shaft member 20a of the heater 20, which rotatably supports the impeller 10, is stabilized within the housing 30, enabling stable rotation of the impeller 10.

[0061] In the above-mentioned embodiment, the rod 25b extends along the long dimension of the dryer 1. In addition, the rod 25b extends along the long dimension of the outflow portion 34 that opens to the outside. The rod 25b is formed of a material that can radiate far infrared rays, such as ceramics, metals, and the like. The rod 25b is heated by the heating wire 26 and radiates far infrared rays. The far infrared rays radiated from the rod 25b are radiated toward the outside via the outflow port 34, for example. The far infrared rays radiated in this way can improve the quick-drying performance of the dryer 1. In particular, the rod 25b extends along the long dimension of the outflow port 34, and the rod 25b is opposed to the outflow port 34 via other components (heating wires, etc.), so that the outflow port 34 of the dryer 1 facing the user can be ensured to be larger. Therefore, the area radiating far infrared rays toward the user can be enlarged, and the quick-drying performance of the dryer 1 can be improved.

[0062] While the present invention has been described above using the aforementioned embodiments, the technical scope of the present invention is not limited to the scope described in the aforementioned embodiments. It will be apparent to those skilled in the art that various modifications or improvements may be made to the aforementioned embodiments. As will be apparent from the claims, embodiments incorporating such modifications or improvements are also encompassed within the technical scope of the present invention.

[0063] The embodiments described above are intended to facilitate understanding of the present invention, rather than to limitatively explain the present invention. In addition, the above embodiments do not limit the objects of use of the present invention, and the present invention may include any object as the object of use. The various components and their configurations, materials, conditions, shapes, and sizes of the above embodiments are not limited to the examples shown, and may be appropriately changed. For example, the present invention includes differences arising from implementation such as manufacturing tolerances. In addition, the components shown in different embodiments may be partially replaced or combined with each other within the scope of technical non-contradiction. In addition, the various structures may be appropriately and selectively combined to achieve at least a portion of the above-mentioned technical problems and effects.

[0064] Description of Reference Numerals

[0065] 1: Dryer; 2: Motor; 2a: Rotating shaft; 10: Impeller; 11: Blade; 12, 13: Ends; 12a, 13a: Inner surface; 13b: Protrusion; 20, 21: Heater; 20a: Shaft member; 22a, 22b: Ends; 23a, 23b: Sides; 24, 27: Core; 25a: Plate; 25b: Rod; 25c: Groove; 25d, 25e: Ends; 25f: Outer peripheral surface; 26: Heating wire; 28: Metal wire; 29: End member; 29a: Outer peripheral surface; 29b: Space; 29c: Protruding portion; 30: Shell; 31: Main body; 31a: Accommodating space; 31b: Side; 32: Handle; 33: Inlet; 34: Outlet; 35: Nozzle; 40, 41, 42: Bearing; F: Airflow; F1: Suction direction; F2: Blowing direction; O: Sectional contour line; R: Rotation direction; S: Space; x: Axis.

Claims

1. A dryer comprising: an impeller having a plurality of blades; and The heater is arranged inside the plurality of blades.

2. The dryer according to claim 1, In the impeller, a suction direction of the fluid intersects with a blowing direction of the fluid.

3. The drying machine according to claim 2, The impeller extends long in the axial direction.

4. The drying machine according to claim 3, Each of the plurality of blades extends long along the axial direction of the impeller. The plurality of blades are disposed around an axis of the impeller.

5. The dryer according to any one of claims 1 to 4, A portion of the cross-section of the heater extends along a flow direction of the fluid generated by the impeller.

6. The drying machine according to claim 5, The heater has a cross section extending long in one direction.

7. The drying machine according to claim 6, The cross section of the heater extends long along the air path of the impeller.

8. The drying machine according to claim 7, The cross section of the heater extends long in the radial direction of the impeller.

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