Heating equipment

Abstract

To provide a heating device advantageous for increasing air volume. [Solution] The heating device 1 includes a housing 2, a fan 24 installed inside the housing 2 and taking in outside air, a heating device 50 that heats the air taken in by the fan 24, a blowout section 12c that blows the air heated by the heating device 50 outward, and a duct 60 having an inlet 63 that introduces the air taken in by the fan 24 and an outlet 64 that directs the air taken in from the inlet 63 toward the blowout section 12c. The duct 60 includes a rectangular parallelepiped first space S1 having two first side surfaces P1 onto which the opening surfaces of the inlet 63 are projected and two second side surfaces P2 onto which the opening surfaces of the outlet 64 are projected.

Description

[Technical field]

[0001] The present embodiment relates to a heating device. [Background technology]

[0002] Conventionally, there is a heating device that drives a fan to take in air from the outside, heats it using a ceramic heater, and blows it out as hot air. This heating device includes a fan case that houses the fan and directs the air that the fan diffuses radially to a ceramic heater that is installed near the hot air outlet. Here, the direction in which the air is diffused by the fan is different from the direction in which the hot air is blown out. Therefore, a part of the fan case has a curved cross section that changes the direction of air movement from the direction in which the air is diffused to the direction in which the hot air is blown out. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 3-124164 Summary of the Invention [Problem to be solved by the invention]

[0004] In a fan case with a curved cross-sectional shape, the volume of the air circulation space is set to approximately the minimum, so for example, it is difficult to increase the amount of air that can be blown while maintaining the shape of the fan case.

[0005] This embodiment provides a heating device that is advantageous in increasing the amount of airflow. [Means for solving the problem]

[0006] The heating device of this embodiment comprises a housing, a fan installed inside the housing to take in outside air, a heating device to heat the air taken in by the fan, and a blowing section to blow the air heated by the heating device to the outside, the housing has a main body case, a front panel, and a guard attached to the front panel, the guard is made of a heat-resistant resin, and an outlet communicating with the blowing section is provided at the bottom of the guard. Effect of the Invention

[0007] According to this embodiment, it is possible to provide a heating device that is advantageous in increasing the air volume. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view of a heating device according to an embodiment of the present invention; [Diagram 2] 1 is a side view of a heating device according to an embodiment of the present invention. [Diagram 3] 1 is a front view of a heating device according to an embodiment of the present invention. [Figure 4] FIG. 2 is a rear view of the heating device according to the embodiment. [Diagram 5] FIG. 2 is an exploded perspective view of the heating device according to the present embodiment. [Figure 6] 2 is a cross-sectional view of the heating device according to the present embodiment taken along the XZ plane. FIG. [Figure 7] 1 is a perspective view of a heating device according to an embodiment of the present invention with a main body case removed; [Figure 8] FIG. 4 is an enlarged cross-sectional view illustrating the spatial shape inside the duct. [Figure 9] 1 is a cross-sectional view of the heating device according to the present embodiment taken along an XY plane. [Figure 10] FIG. 11 is a perspective view of a heating device according to another embodiment. [Figure 11] FIG. 11 is a side view of a heating device according to another embodiment. [Figure 12] FIG. 11 is a front view of a heating device according to another embodiment. [Figure 13]FIG. 11 is a rear view of a heating device according to another embodiment. [Figure 14] FIG. 11 is a plan view of a heating device according to another embodiment. [Figure 15] 11 is a cross-sectional view taken along the XZ plane of a heating device according to another embodiment. FIG. [Figure 16] FIG. 4 is an enlarged perspective view of a main body case illustrating an air inlet of the heating device. [Figure 17] FIG. 4 is an enlarged perspective view of the front panel illustrating the air outlet of the heating device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the present embodiment will be described in detail with reference to the drawings. Here, the dimensions, materials, and other specific numerical values ​​shown in the embodiment are merely examples, and do not limit the present embodiment unless otherwise specified. Furthermore, elements having substantially the same functions and configurations are given the same reference numerals to avoid repeated explanations, and elements not directly related to the present embodiment are not illustrated.

[0010] FIG. 1 is a perspective view showing the appearance of a heating device 1 according to this embodiment. FIG. 2 is a side view of the heating device 1. FIG. 3 is a front view of the heating device 1. FIG. 4 is a rear view of the heating device 1. In FIG. 1 and the following figures, the height direction of the heating device 1 is defined as the Z direction. The Z direction may be along the vertical direction or may be inclined with respect to the vertical direction. In addition, an X direction and a Y direction perpendicular to the X direction are defined in a plane perpendicular to the Z direction. In this embodiment, the blowing direction of the hot air is approximately along the X direction. Hereinafter, in the X direction, the side from which the hot air is blown out may be referred to as the "front" and the opposite side may be referred to as the "rear".

[0011] The heating device 1 is installed, for example, indoors, and heats the room by internally heating air taken in from the outside and blowing out hot air from the air outlet 14a. In FIG. 1, the arrow indicates the state in which hot air is being blown out from the heating device 1. The heating device 1 is a so-called upright type, which is placed on the floor surface, which is the installation surface, and is in an upright position when in use. The heating device 1 has a shape in which the side width in the X direction is narrower than the front width in the Y direction, that is, the width in the front-rear direction is thin.

[0012] The heating device 1 includes a main body case 10, a front panel 12, a guard 14, and an operation panel 16. Here, the housing 2 of the heating device 1 is a combination of the main body case 10 and the front panel 12.

[0013] The main body case 10 houses the other elements included in the heating device 1. The main body case 10 is generally box-shaped with an open front side, with the case outer frame end 10a (see FIG. 6) as the boundary. As shown in FIG. 4, the main body case 10 has an air intake 10b that opens toward the rear. The main body case 10 has a base 18 on the lower surface 10d (see FIG. 5, etc.) for stably placing the heating device 1 on a floor surface. The air intake 10b and the base 18 will be described in detail below. The main body case 10 also has a recess 10i for leading the power cord 54 to the outside.

[0014] The front panel 12 is located in front of the heating device 1 and covers the open surface of the main body case 10. The front panel 12 is removable from the main body case 10. The front panel 12 has a panel outer frame end 12a (see FIG. 6) shaped to match the case outer frame end 10a of the main body case 10. That is, when the front panel 12 is attached to the main body case 10, the panel outer frame end 12a and the case outer frame end 10a are combined. The front panel 12 is fixed to the main body case 10 using a plurality of mounting screws 13 (see FIG. 5). Note that FIG. 5 shows only one mounting screw 13 as an example. In this case, the main body case 10 has a plurality of through holes 10j through which the mounting screws 13 pass. Meanwhile, the front panel 12 has a plurality of screw hole portions 12b (see FIG. 7) corresponding to each of the plurality of through holes 10j. The front panel 12 also has a blowing portion 12c, a guard housing portion 12d, and a sensor window 12e.

[0015] The blowing section 12c is a hole penetrating between the front side and the rear side. The hot air generated inside the heating device 1 is finally guided to the blowing section 12c. In this embodiment, the blowing section 12c is provided on the lower side of the front panel 12.

[0016] The guard 14 has an outlet 14a that blows out the hot air generated inside the heating device 1 toward the outside. The guard 14 is a protective member having a plurality of fins 14b in front of the outlet 14a to prevent access to the outlet 14a from the outside. The plurality of fins 14b are arranged in parallel while maintaining a distance G1 so that a space penetrating in the X direction is formed. The guard 14 can rectify the hot air in addition to preventing access to the outlet 14a from the outside by appropriately setting the distance G1 between the fins 14b in advance. The guard 14 is made of a heat-resistant resin. The guard 14 has the outlet 14a at a location near the lower end, and no outlet is provided at the remaining location near the upper end. This prevents the front panel 12 from being deformed by the heat of the hot air from the outlet 14a.

[0017] The guard housing portion 12d is a recess that can accommodate the guard 14 from the front side and install it. When the guard 14 is installed in the guard housing portion 12d, the outlet 14a of the guard 14 penetrates the outlet portion 12c formed in the front panel 12. The upstream open end of the outlet 14a is connected to the outlet 64 of the duct 60 (see FIG. 6). When the guard 14 is installed in the guard housing portion 12d, the guard 14 has a shape that does not protrude from the surface of the front panel 12. The guard 14 is fixed to the guard housing portion 12d by using a plurality of mounting screws 15 (see FIG. 5). Note that FIG. 5 shows only one mounting screw 15 as an example. In this case, the guard housing portion 12d has a plurality of through holes 12f through which the mounting screws 15 penetrate. On the other hand, the guard 14 has a plurality of screw hole portions corresponding to the plurality of through holes 12f, although not shown.

[0018] The sensor window 12e is a hole that exposes to the outside a sensing portion of the human sensor 20, which will be described later. In this embodiment, the sensor window 12e is provided on the upper side of the front panel 12 and toward one side in the Y direction, which is the front width direction.

[0019] The operation panel 16 has a power button and various switching buttons for changing the operation state of the heating device 1. The operation panel 16 is provided on the top surface 10c of the main body case 10.

[0020] Fig. 5 is an exploded perspective view showing the configuration of the heating device 1. Fig. 6 is a cross-sectional view of the heating device 1 corresponding to the cross section VI-VI in Fig. 3. Fig. 7 is a perspective view of the heating device 1 with only the main body case 10 removed, as viewed obliquely from behind.

[0021] The heating device 1 further includes a human sensor 20, a circuit board 22, a fan 24, a motor 26, a motor support portion 30, a fan housing portion 40, a heating device 50, and a duct 60.

[0022] The human sensor 20 functions as a detection unit that detects the movement of a heated object to be detected, such as a person appearing in front of the heating device 1. The heating device 1 can automatically start and stop operation based on the detection of a person or the like by the human sensor 20, without a person having to directly operate the operation panel 16.

[0023] The circuit board 22 mounts a control circuit and the like as a control unit that controls the operation of the heating device 1. The circuit board 22 is installed near the back surface of the operation panel 16. The operation panel 16, the human sensor 20, the motor 26, and the heating device 50 are each electrically connected to the circuit board 22.

[0024] The fan 24 is rotated by the drive of the motor 26, and takes in outside air through the air intake 10b. The fan 24 is, for example, a sirocco fan having a large number of blades 24a arranged in a cylindrical shape, and generates an air flow by centrifugal force. The central shaft 24b of the fan 24 is attached coaxially to the rotating shaft 26a of the motor 26.

[0025] The motor support part 30 is a member that supports the motor 26. The motor support part 30 is, for example, a flat plate member parallel to a plane formed by the Z direction, which is the height direction, and the Y direction, which is the front width direction. The motor support part 30 has a through hole 31 through which the rotation shaft of the motor 26 penetrates, approximately at the center position of the YZ plane. The motor 26 is attached to the motor support part 30 using a mounting screw 32 and a mounting nut 33 so that the rotation shaft 26a penetrates the through hole 31 from the front to the rear. In this case, the main body part 26b of the motor 26 is located on the front side of the motor support part 30. On the other hand, the fan 24 is located on the rear side of the motor support part 30. In addition, the motor support part 30 has a plurality of air introduction holes 34 that penetrate radially from the front side to the rear side with the through hole 31 as a reference. The hole area in which the air introduction holes 34 are formed faces the cylindrical interior of the fan 24. The main body 26b of the motor 26 may block a part of the hole area, but does not block the entire hole area. Therefore, when the fan 24 rotates, air is introduced from the main body 26b side to the fan 24 side through the air inlet hole 34. The introduced air is sucked into the cylindrical interior of the fan 24, and then discharged to the outside of the cylinder of the fan 24. The motor support part 30 may support the human sensor 20 using a screw or the like (not shown).

[0026] The fan housing 40 is a wall that houses the fan 24 inside. In this embodiment, the fan housing 40 is a combination of a first wall 35 that is integrated with the rear surface of the motor support 30 and a second wall 10e that is integrated with the inner surface of the main body case 10. The fan housing 40 has a shape that surrounds the outer periphery of the fan 24 without contacting it as a whole. In other words, a housing space S0 surrounded by the fan housing 40, the rear surface of the motor support 30, and the inner surface of the main body case 10 is formed around the fan 24. In addition, a part of the fan housing 40 is connected to an inlet 63 of a duct 60 located below the fan housing 40. Therefore, the air discharged outside the cylinder of the fan 24 is introduced into the housing space S0 and then guided to the inlet 63. Here, in order to facilitate a smooth flow of air within the accommodation space S0, the fan accommodation section 40 may have a shape in which the distance between the fan accommodation section 40 and the fan 24 gradually increases in accordance with the rotation direction of the fan 24, i.e., the direction in which air is discharged by the fan 24. The fan accommodation section 40 may also have a flared end 40a that flares out toward the inlet 63.

[0027] The fan housing 40 also has an engagement portion 40b that engages with the inlet 63 of the duct 60. For example, the duct 60 has a flange portion 63a at the end of the inlet 63 as shown in Fig. 7. In this case, the engagement portion 40b may have a shape that engages with the flange portion 63a by sliding it along the X direction, and that clamps and holds the flange portion 63a along the Z direction.

[0028] As shown in Fig. 5, the motor support part 30 is fixed to the main body case 10 by using a plurality of mounting screws 36. Note that Fig. 5 illustrates only one mounting screw 36 as an example. In this case, the motor support part 30 has a plurality of through holes 30a through which the mounting screws 65 pass. Meanwhile, the main body case 10 has a plurality of screw hole portions 10f corresponding to the respective through holes 30a.

[0029] The heating device 50 heats the air sent from the fan housing section 40. For example, a PTC heater is used as the heating device 50. The heating device 50 is represented as a long plate-shaped block body in each drawing such as FIG. 5. However, the heating device 50 is actually composed of a plurality of heat generating plates arranged in parallel so that a plurality of spaces are formed penetrating in the thickness direction corresponding to the Z direction in the drawing. Therefore, the air sent from the fan housing section 40 can penetrate the heating device 50 in the thickness direction. In addition, a terminal 50a for connecting a lead wire 52 (see FIG. 7) is provided on one side surface in the longitudinal direction of the heating device 50.

[0030] Duct 60 guides air sent from fan housing section 40 to outlet 14a. In this embodiment, duct 60 is installed below fan housing section 40, and therefore has a shape that takes in air on the upper side and expels air toward the front side. Duct 60 has an inlet 63 that introduces air taken in by fan 24 from fan housing section 40, and an outlet 64 that guides the air introduced from inlet 63 toward outlet 14a.

[0031] The inlet 63 is located on the upper surface side of the duct 60. The opening surface of the inlet 63 is, for example, on the XY plane, and is long in the Y direction and short in the X direction. On the other hand, the outlet 64 is located below the front surface side of the duct 60. The opening surface of the outlet 64 is, for example, on the YZ plane, and is long in the Y direction and short in the Z direction. The opening shape of the outlet 64 approximately matches the opening shape of the air outlet 14a. In addition, the dimension of the inlet 63 in the Y direction approximately matches the dimension of the outlet 64 in the Y direction. The dimension of the inlet 63 in the X direction is set to be larger than the dimension of the outlet 64 in the Z direction. That is, it is preferable to set the opening area of ​​the inlet 63 larger than the opening area of ​​the outlet 64, and for example, it is preferable to set it to 1.2 to 2.0 times the opening area of ​​the outlet 64. As a result, the air sent from the fan housing section 40 to the duct 60 is accelerated between the time it enters through the comparatively wide inlet 63 and the time it exits through the comparatively narrow outlet 64, and is then forcefully blown out from the outlet 14a.

[0032] The duct 60 has a front surface 60a, a rear surface 60b, a first side surface 60c, a second side surface 60d, and a bottom surface 60e so that the inlet 63 and the outlet 64 as defined above are formed. The front surface 60a is a first wall having the outlet 64. The rear surface 60b is a second wall facing the front surface 60a in the X direction. The first side surface 60c and the second side surface 60d are side wall portions facing each other in the Y direction. The bottom surface 60e is a lower wall portion facing the inlet 63. The bottom surface 60e has no opening, and the duct 60 forms a flow path without an outlet from the inlet 63 to the outlet 64. The opening surface of the inlet 63 is approximately a surface surrounded on all four sides by the upper ends of the front surface 60a, the rear surface 60b, the first side surface 60c, and the second side surface 60d.

[0033] 8 is an enlarged cross-sectional view of the duct 60. The flow space in the duct 60 includes the following four spaces, specifically a first space S1, a second space S2, a third space S3, and a fourth space S4. The first space S1 to the fourth space S4 are indicated by two-dot chain lines in the figure. The lengths of the first space S1 to the fourth space S4 in the Y direction are approximately the same as the lengths of the inlet 63 and the outlet 64, respectively.

[0034] The first space S1 is a rectangular parallelepiped space having two first side surfaces P1 onto which the opening surfaces of the inlet 63 are projected, and two second side surfaces P2 onto which the opening surfaces of the outlet 64 are projected. That is, the two first side surfaces P1 face each other in the Z direction. The two second side surfaces P2 face each other in the X direction. In this case, if one were to look into the inside of the duct 60 from the inlet 63 along the Z direction, the first space S1 would be visible. Also, if one were to look into the inside of the duct 60 from the outlet 64 along the X direction, the first space S1 would be visible.

[0035] The second space S2 has two third side surfaces P3 onto which the opening surface of the inlet 63 is projected, and does not have a side surface onto which the opening surface of the outlet 64 is projected. That is, the second space S2 is a space facing the first space S1 in the Z direction. The two third side surfaces P3 face each other in the Z direction. The second space S2 has two fourth side surfaces P4 as a YZ plane that connects the two third side surfaces P3. In this case, if the inside of the duct 60 is viewed from the inlet 63 along the Z direction, the second space S2 is visible. However, even if the inside of the duct 60 is viewed from the outlet 64 along the X direction, the second space S2 is not visible because it does not have a side surface onto which the opening surface of the outlet 64 is projected.

[0036] The heating device 50 is installed in the second space S2. The duct 60 holds the heating device 50 so that the heating device 50 covers the cross section of the flow path in the second space S2. In this embodiment, the air flow in the second space S2 is from above to below along the Z direction. The heating device 50 is a long plate-like shape and can pass air in the thickness direction. Therefore, the duct 60 holds the heating device 50 so that the thickness direction of the heating device 50 matches the Z direction. In this case, the air penetration surface of the heating device 50 is parallel to the opening surface of the inlet 63 of the duct 60. The first side portion 60c of the duct 60 has a through hole 60f that exposes the terminal 50a to the outside when the heating device 50 is installed.

[0037] The second space S2 is a rectangular parallelepiped space similar to the first space S1. However, in this embodiment, the second space S2 is not limited to a rectangular parallelepiped space, and may be an irregular shape, for example, in which the fourth side surface P4 is inclined with respect to the YZ plane.

[0038] The third space S3 is a space that supplements the interval G2 in the X direction from the first space S1 and the second space S2 to the air outlet 14a. The third space S3 desirably has a shape that makes it easy to guide air from the first space S1 or the second space S2 to the air outlet 14a. Thus, a part of the front surface portion 60a may be an inclined wall 60g that makes the opening area of ​​the third space S3 on the side in contact with the first space S1 and the second space S2 larger than the opening area of ​​the air outlet 14a.

[0039] The fourth space S4 is a space contained in a curved surface portion 60h formed on the rear surface portion 60b. The curved surface portion 60h is a wall portion that is convex from the inside to the outside of the duct 60 with an axis extending in the Y direction as the center of curvature. At least a part of the curved surface portion 60h faces the outlet port 64.

[0040] The duct 60 has a protrusion (rib) 60r that protrudes from the front surface 60a toward the inside (rearward) of the duct 60 downstream in the air flow direction from the position where the heating device 50 is installed. The protrusion 60r is provided at a position facing the curved surface portion 60h of the rear surface portion 60b. As shown in FIG. 6, the protrusion 60r is desirably provided near the upstream side (upper end 60ht of the curved surface portion 60h) of the air flow direction of the curved surface portion 60h. More specifically, the height position of the protrusion 60r is desirably between the upper end 60ht of the curved surface portion 60h and the middle portion 60hm in the Z direction in the Z direction. In the internal space of the duct 60, as shown by the arrow in FIG. 6, the downward air flow that has passed through the heating device 50 can be bent toward the curved surface portion 60h by the protrusion 60r and further smoothly changed in direction along the shape of the curved surface portion 60h to proceed forward. Although not shown, if air is guided from the inlet to the outlet using a duct that does not have the convex portion 60r and the curved portion 60h, the downward air flow will hit the bottom portion 60e directly, resulting in a large pressure loss. By providing the convex portion 60r and the curved portion 60h in the duct 60, the air can flow smoothly and the pressure loss can be reduced.

[0041] Further, the duct 60 has a structure that changes the direction of the air from a vertical direction (downward) to a horizontal direction (forward) downstream of the heating device 50 in the air flow direction. That is, the air flow after passing through the heating device 50 can be smoothly changed in direction by the convex portion 60r and the curved surface portion 60h, and can be blown out from the outlet 14a with the same momentum as the changed direction.

[0042] The duct 60 can be divided into a first divided body 61 and a second divided body 62. For example, the first divided body 61 and the second divided body 62 are divided approximately along a YZ plane perpendicular to the X direction corresponding to the front-rear direction of the heating device 1. That is, the first divided body 61 and the second divided body 62 face each other in the X direction when combined with each other. The first divided body 61 may be the divided body on the side having the outlet 64. In this case, the second divided body 62 is the divided body on the side having the curved surface portion 60h. On the other hand, the inlet 63 is divided into the first divided body 61 side and the second divided body 62 side, as shown in FIG. 5.

[0043] The duct 60 may be composed of three or more divided bodies. For example, in addition to the first divided body 61 and the second divided body 62, the duct 60 may further be divided along the YZ plane and include a third divided body sandwiched between the first divided body 61 and the second divided body 62, and the three divided bodies may be combined along the X direction.

[0044] Furthermore, when the duct 60 can be divided into a first divided body 61 and a second divided body 62, the heating device 50 is held by being sandwiched between the first divided body 61 and the second divided body 62. For example, the duct 60 has a plurality of protrusions 60i that support the side ends of the heating device 50 on the inner surface of the front surface portion 60a that faces the second space S2 and the inner surface of the rear surface portion 60b that faces the second space S2. The plurality of protrusions 60i are arranged so as to sandwich the heating device 50 in the Z direction and to sandwich the heating device 50 in the X direction, respectively.

[0045] The first divided body 61 and the second divided body 62 are assembled to each other using a plurality of mounting screws 65, as shown in Fig. 5. Note that only one mounting screw 65 is depicted in Fig. 5 as an example. In this case, the first divided body 61 has a plurality of through holes 60j through which the mounting screws 65 pass. Meanwhile, the second divided body 62 has a plurality of screw hole portions 60k corresponding to each of the plurality of through holes 60j.

[0046] Furthermore, the duct 60 has a protrusion 60n having a through hole 60m at a bottom surface 60e through which a mounting screw 66 passes. Meanwhile, the main body case 10 has a screw hole 10k on the inner surface at a position corresponding to the through hole 60m, through which the mounting screw 66 is fastened. The duct 60 is fixed to the main body case 10 by engaging the flange portion 63a with the engaging portion 40b of the fan housing portion 40 and by using the mounting screw 66.

[0047] The duct 60 may have a fuse accommodating portion 60p, for example on the front surface 60a, for accommodating a fuse that is installed when the heating device 50 is used.

[0048] Here, the motor support part 30 is located above the duct 60 in the vertical direction. The motor support part 30 is supported by the main body case 10 on the rear side of the housing 2. That is, the motor support part 30 is supported by the housing 2 on the side to which the fan accommodating part 40 is connected. Therefore, the center of gravity of the heating device 1 as a whole is likely to be located above and behind the heating device 1. Therefore, the base 18 supporting the housing 2 has a shape in which the side supporting the motor support part 30 protrudes horizontally from the housing 2 more than the opposite side. Here, the side supporting the motor support part 30 in the horizontal direction refers to the rear side in the front-rear direction corresponding to the X direction. On the other hand, the opposite side to the side supporting the motor support part 30 in the horizontal direction refers to the front side in the front-rear direction. Specifically, referring to FIG. 6, the front end part 18a of the base 18 is approximately aligned with the surface position of the front panel 12. That is, the front end part 18a does not protrude from the front panel 12, which is a part of the housing 2. In contrast, a rear end 18b of the base 18 protrudes outward from the surface of the main body case 10, which is a part of the housing 2, by a distance L.

[0049] Also, the circuit board 22 is located above the motor support part 30 in the Z direction. Meanwhile, the heating device 50 is located below the motor support part 30 in the Z direction. The circuit board 22 and the heating device 50 are electrically connected by a plurality of lead wires 52. Here, the motor support part 30 has a hook part 37 for arranging the lead wires 52 at the side end part 30b as shown in FIG. 7. The hook part 37 includes, for example, a first hook 37a and a second hook 37b each having a shape obtained by deforming a flat plate into an L shape. The first hook 37a stands upright in the Y direction from the front end of the side end part 30b, and its tip part faces backward in parallel to the side end part 30b. Meanwhile, the second hook 37b stands upright in the Y direction from the rear end of the side end part 30b at a distance in the Z direction from the first hook 37a, and its tip part faces forward in parallel to the side end part 30b. When wiring the lead wire 52 in the hook portion 37, the worker first inserts the lead wire 52 between the first hook 37a and the second hook 37b while laying the lead wire 52 along the X direction, and then changes the position of the lead wire 52 to be along the Z direction. With this wiring, the forward movement of the lead wire 52 is restricted by the first hook 37a, and the backward movement is restricted by the second hook 37b. On the other hand, the movement of the lead wire 52 in the Y direction is restricted by both the first hook 37a and the second hook 37b.

[0050] Furthermore, main body case 10, which is a part of housing 2, has air intake port 10b that draws in outside air. The position where air intake port 10b is formed and the flow path within heating device 1 of the air drawn in from air intake port 10b are specified, for example, as follows.

[0051] Fig. 9 is a cross-sectional view of heating device 1 corresponding to cross section IX-IX in Fig. 2. In Fig. 9, arrows indicate the flow path of air drawn in from air intake port 10b as fan 24 rotates until it reaches fan 24. Air intake ports 10b are formed in two places in main body case 10 so as to penetrate from the rear side to the front side in the front-rear direction.

[0052] First, as shown in FIG. 4, each of the air intakes 10b has a long and narrow planar shape with a plurality of through holes arranged along the Z direction. Of the two air intakes 10b, one of the air intakes 10b is provided near a first side surface portion 10g, which is one side surface portion of the main body case 10. The other air intake 10b is provided near a second side surface portion 10h, which is the other side surface portion of the main body case 10. The height position at which the air intakes 10b are provided is approximately the same as the height position of the fan 24 in the Z direction. Note that a filter (not shown) may be provided on the back surface of the air intake 10b to prevent dust and the like from entering the interior of the heating device 1.

[0053] Here, as shown in FIG. 9, the heating device 1 has a first circulation path PA1 that passes the air sucked in from the air intake 10b by the fan 24 to the outside of the fan housing 40. In the Y direction, which corresponds to the front width direction of the heating device 1, a gap G3 exists between one side end 30b of the motor support part 30 and the first side part 10g of the main body case 10 facing this side end 30b. The same is true between the other side end 30b of the motor support part 30 and the second side part 10h of the main body case 10 facing this side end 30b. Therefore, the first circulation path PA1 passes through the space of the gap G3 from the rear side of the motor support part 30 along the X direction toward the front side of the motor support part 30, and finally hits the rear surface 12g of the front panel 12.

[0054] In this embodiment, it is assumed that a gap G3 exists in advance between the side end 30b of the motor support part 30 and the side part of the main body case 10. However, due to the dimensions of the motor support part 30, there may be cases where there is almost no gap between the side end 30b of the motor support part 30 and the side part of the main body case 10. In this case, by forming a through hole penetrating the motor support part 30 from the front side to the rear side in advance, it is possible to provide a first circulation path PA1 passing through the through hole.

[0055] As described above, the motor support part 30 has a plurality of air inlet holes 34 penetrating from the front side to the rear side. When the fan 24 rotates, the air on the front side of the motor support part 30 passes through the plurality of air inlet holes 34 and is sucked into the rear side of the motor support part 30, i.e., the inside of the fan housing part 40. That is, the heating device 1 has a second circulation path PA2 that circulates the air that has passed through the first circulation path PA1 to the side of the motor 26 and inside the fan housing part 40. The air that has flowed along the first circulation path PA1 changes its direction of travel at the back surface 12g of the front panel 12. Then, the air that has changed its direction of travel continues to travel along the second circulation path PA2 by being sucked in by the fan 24. The circulation path of the air from the first circulation path PA1 to the second circulation path PA2 is shown as a third circulation path PA3 in FIG. 9.

[0056] The air movement direction in the first circulation path PA1 and the air movement direction in the second circulation path PA2 are parallel to the rotation shaft 26a of the motor 26, that is, along the X direction corresponding to the front-rear direction. However, as described above, the air movement direction in the first circulation path PA1 and the air movement direction in the second circulation path PA2 are opposite to each other.

[0057] As described above, the heating device 1 according to this embodiment is installed inside the housing 2 and includes the fan 24 that takes in outside air, the heating device 50 that heats the air taken in by the fan 24, and the blowing section 12c that blows the air heated by the heating device 50 to the outside. The heating device 1 includes a duct 60 having an inlet 63 that introduces the air taken in by the fan 24 and an outlet 64 that discharges the air introduced from the inlet 63 toward the blowing section 12c. The duct 60 includes a rectangular parallelepiped first space S1 having two first side surfaces P1 onto which the opening surface of the inlet 63 is projected and two second side surfaces P2 onto which the opening surface of the outlet 64 is projected.

[0058] According to such a heating device 1, the circulation space in the duct 60 includes at least the first space S1, so that the volume of the duct 60 is larger than that of a conventional fan case. A conventional fan case has a shape with a curved cross section that approximately minimizes the volume of the circulation space. Since the circulation space of a fan case having such a shape cannot include the rectangular parallelepiped first space S1 whose size is defined by the first side surface P1 and the second side surface P2, the circulation space in the duct 60 including the first space S1 has a larger volume. Therefore, the duct 60 can circulate more air sent from the fan 24 than in the past. Also, for example, it is assumed that the size of the fan 24 is made larger than in the past in order to increase the volume of the hot air. Even in this case, by using a duct 60 with a large volume of the circulation space, the flow of the circulating air is less likely to be obstructed, so that the volume of the air can be suitably increased more than in the past. Therefore, according to this embodiment, a heating device 1 that is advantageous in increasing the volume of the hot air can be provided.

[0059] In addition, in the heating device 1 of this embodiment, the duct 60 has two third side surfaces P3 onto which the opening surface of the inlet 63 is projected, and includes a second space S2 that has no side surface onto which the opening surface of the outlet 64 is projected, and the heating device 50 may be installed in the second space S2.

[0060] For example, the interval G1 between the fins 14b provided on the guard 14 is set to be smaller than the width of an adult's finger. Therefore, it is basically difficult for an adult to directly insert a finger toward the outlet 14a, which may become hot. However, for example, in the case of an infant, depending on the size of the interval G1, it may be possible for the infant to insert a finger toward the outlet 14a. In this case, if the heating device 50 is installed, for example, near the outlet 64 of the duct 60 that contacts the outlet 14a, it is possible that the infant may touch the heating device 50 when accidentally inserting a finger toward the outlet 14a.

[0061] In contrast, according to the heating device 1, the heating device 50 is installed in the second space S2, i.e., not in the first space S1 which is closer to the outlet 64. In other words, since the heating device 50 is installed at a position far from the outlet 64, even if an infant inserts a finger toward the air outlet 14a, the infant can be prevented from touching the heating device 50.

[0062] On the other hand, some conventional heating devices have a configuration in which, even if the heating device is installed near the air outlet, a filter is installed between the air outlet and the heating device, so that the heating device cannot be directly touched from the air outlet side. In contrast, in the heating device 1, the heating device 50 itself is located away from the air outlet 14a, so there is no need to install a filter as in the past, which can be advantageous in terms of reducing the number of components. This can also contribute to increasing the amount of air by minimizing the installation of components that can cause pressure loss in the circulation space of the duct 60.

[0063] Furthermore, in the heating device 1 of this embodiment, the duct 60 can be divided into a first division 61 and a second division 62, and the heating device 50 can be held by being sandwiched between the first division 61 and the second division 62.

[0064] Such a heating device 1 can be advantageous in terms of reducing the number of components, since it is not necessary to use fastening members such as screws specialized for holding the heating device 50. In addition, when assembling the heating device 1, the heating device 50 can be held at the same time as the process of combining the first divided body 61 and the second divided body 62, so it can also be advantageous in terms of simplifying the assembly process of the heating device 1.

[0065] Furthermore, in the heating device 1 according to this embodiment, the duct 60 may have a curved surface 60h, at least a part of which faces the outlet 64 and which is convex from the inside to the outside of the duct 60, in a second wall portion facing the first wall portion in which the outlet 64 is formed. Here, the first wall portion corresponds to, for example, the front surface portion 60a of the duct 60. In this case, the second wall portion corresponds to the rear surface portion 60b.

[0066] According to such a heating device 1, even if the circulation space of the duct 60 includes the rectangular parallelepiped first space S1, the air flow can proceed smoothly from the inlet 63 to the outlet 64 along the shape of the curved portion 60h, as shown by the arrow in Figure 6.

[0067] The heating device 1 according to the present embodiment may include a motor 26 that rotates the fan 24, a motor support section 30 that supports the motor 26 on the side to which the fan 24 is connected, and a fan housing section 40 that is connected to the motor support section 30 and houses the fan 24. The heating device 1 may include a first circulation path PA1 that passes the air sucked by the fan 24 to the outside of the fan housing section 40, and a second circulation path PA2 that passes the air that has passed through the first circulation path PA1 to the side of the motor 26 and inside the fan housing section 40. The traveling direction of the air in the first circulation path PA1 and the traveling direction of the air in the second circulation path PA2 may be parallel to the rotation axis of the motor 26 and may be opposite to each other.

[0068] According to such a heating device, the air taken into the inside of the heating device 1 changes direction after passing the outside of the fan housing section 40, passes the side of the motor 26, and heads toward the inside of the fan housing section 40. In other words, the air taken into the inside of the heating device 1 comes into contact with the side of the motor 26 before being introduced into the inside of the fan housing section 40, which is advantageous for dissipating heat from the motor 26. Also, for example, assume that the rating of the motor 26 is made larger than before in order to increase the volume of hot air. Even in this case, since it is advantageous for heat dissipation of the motor 26, it is easier to deal with an increase in the rating of the motor, and the volume of air can be preferably increased more than before.

[0069] Furthermore, in the heating device 1 according to this embodiment, the housing 2 may have an intake port 10b formed at a position along the first flow path PA1.

[0070] According to the heating device 1, air can be introduced into the first distribution path PA1 more smoothly.

[0071] In the heating device 1 according to this embodiment, the motor support part 30 may have a hook part 37 on the side end part 30b.

[0072] According to such a heating device 1, the lead wires 52 can be easily arranged when assembling the heating device 1, which can be advantageous in terms of simplifying the assembly process of the heating device 1. Also, as shown in Fig. 9, the side end portion 30b of the motor support part 30 contacts a part of the first circulation path PA1. Therefore, when the lead wires 52 have heat, this can be advantageous in terms of dissipating heat from the lead wires 52.

[0073] Furthermore, in the heating device 1 according to this embodiment, the motor support part 30 may be supported by the housing 2 vertically above the duct 60 and on the side to which the fan housing part 40 is connected. The housing 2 may include a base 18 that protrudes horizontally from the housing 2 on the side supporting the motor support part 30 further than the opposite side.

[0074] According to such a heating device 1, even if the center of gravity is located above and behind the heating device 1, the base 18 can stably support the housing 2.

[0075] Next, an embodiment different from the above-mentioned embodiment will be described with reference to the drawings. Note that elements having substantially the same functions and configurations as those in the above-mentioned embodiment will be denoted by the same reference numerals to avoid repetitive explanations, and elements not directly related to the embodiment will be omitted from the drawings.

[0076] Fig. 10 is a perspective view showing the appearance of heating device 1A according to this embodiment. Fig. 11 is a side view of heating device 1A. Fig. 12 is a front view of heating device 1A. Fig. 13 is a rear view of heating device 1A. Fig. 14 is a plan view of heating device 1A.

[0077] Fig. 15 is a cross-sectional view of heating device 1A corresponding to cross section XV-XV in Fig. 12. Fig. 16 is an exploded perspective view of intake port 10b in main body case 10 as viewed obliquely from the front. Fig. 17 is a perspective view of outlet port 14a in front panel 12 as viewed obliquely from the rear.

[0078] As shown in Figs. 10 to 14, the heating device 1A includes a base portion (fixed portion) 70, a housing (swivel portion) 2, and a swivel mechanism 71 (see Fig. 15). The base portion 70 is placed on the floor surface, which is the installation surface, and supports the housing 2. The base portion 70 is formed in a circular shape in a plan view. The housing 2 has a bulging portion 72 that bulges out horizontally (front-rear direction) from the lower portion of the main body case 10 to correspond to the circular base portion 70. The housing 2 is attached to the upper portion of the base portion 70 in a swivelable manner.

[0079] As shown in FIG. 15, the oscillating mechanism 71 includes an oscillating motor 73 and a support mechanism 74. The oscillating motor 73 is fixed to the main body case 10, and the oscillating motor 73 and the base 70 are connected via a link mechanism 75. The support mechanism 74 is disposed between the base 70 and the main body case 10. The support mechanism 74 includes an annular rail 76 provided on the upper part of the base 70, a support (sphere) 77 disposed on the rail 76 so as to be capable of rolling, and a holder 78 formed on the lower part of the main body case 10 and holding the support 77. The support 77 is disposed between the base 70 and the bulge 72, and between the base 70 and the main body case 10, and supports the load of the housing 2.

[0080] Such a swivel mechanism 71 swivels the housing 2 in the horizontal direction (left and right direction) relative to the base 70 within an angle range of a set swivel angle θ1 (e.g., 90°) (see FIG. 14). Also, by arranging the swivel motor 73 in the lower part of the housing 2 (main body case 10), the center of gravity moves toward the lower part of the heating device 1A, improving the stability of placing the heating device 1A on the floor surface.

[0081] The circuit board 22 has a control unit that controls the swing action of the swing mechanism 71 and the operating state of the heating operation by the motor 26 and the heating device 50. This control unit does not control the heating operation to automatically stop and start based on the human sensor 20 when the swing mechanism 71 rotates the housing 2 in the horizontal direction (left and right direction) relative to the base 70.

[0082] The air intake 10b shown in Fig. 16 has an enlarged opening area compared to the air intake 10b in the embodiment shown in Fig. 4. As shown in Fig. 16, a filter 80 for preventing dust and the like from entering the inside of the heating device 1A is provided on the back side of the air intake 10b. The filter 80 is formed by insert-molding a mesh filter 82 into a resin frame 81, and separates dust and the like from the air.

[0083] As shown in Fig. 17, the air outlet 14a is provided with a louver 83 that can rotate in the vertical direction. The louver 83 is manually rotated upward from the horizontal position shown in Fig. 15 by a set rotation angle θ2 (for example, 20° to 25°). A spring (wire spring) 86 is attached between shafts 84 at both ends of the louver 83 and shaft support parts 85 on the front panel 12 side, and the spring 86 holds the louver 83 at a desired rotation angle. With the louver 83 rotated upward from the horizontal position, the housing 2 is swung left and right relative to the base part 70, so that the hot air can be diffused in the vertical direction as well, and the heating efficiency of the heating device 1A can be improved.

[0084] As described above, the heating device 1A of this embodiment is placed on an installation surface (floor surface) and includes a base portion 70 that supports the housing 2, and a swivel mechanism 71 that rotates the housing 2 horizontally (left and right) relative to the base portion 70.

[0085] According to such a heating device 1A, the hot air blown out from the air outlet 14a can be diffused in the horizontal direction (left and right direction), and a wide area in front of the heating device 1A can be heated.

[0086] Furthermore, in heating device 1A according to this embodiment, base portion 70 may be formed in a circular shape in a plan view, and housing 2 may have a bulging portion that bulges horizontally from the lower part of housing 2 in correspondence with circular base portion 70. A support 77 that supports the load of housing 2 may be disposed between base portion 70 and bulging portion 72.

[0087] According to this heating device 1A, the housing 2 which rotates horizontally (left and right) relative to the base part 70 can be stably supported.

[0088] Furthermore, the heating device 1A according to this embodiment may include a control unit (circuit board 22) and a detection unit (human sensor 20) that detects the movement of a heated detection target. The control unit (circuit board 22) may perform control so as not to automatically stop and start the heating operation based on the detection unit (human sensor 20) when the swing mechanism 71 rotates the housing 2 in the horizontal direction relative to the base 70.

[0089] According to this heating device 1A, when the swivel mechanism 71 rotates the housing 2 horizontally relative to the base 70, it is possible to prevent erroneous detection in which an object warmed by the warm air blown out from the outlet 14a is detected as the object to be detected.

[0090] Although the preferred embodiments have been described above, the embodiments are not limited to these, and various modifications and changes are possible within the scope of the gist thereof. [Explanation of symbols]

[0091] 1,1A Heating device 2. Chassis 10b Air intake 12c Speech bubble 18 Base 20 Human sensor (detection part) 22 Circuit board (control unit) 24 Fans 26 Motor 30 Motor support 30b side end 37 Hook part 40 Fan housing 50 Heating device 60 Duct 60h curved part 61 1st division body 62 Second division body 63 Introduction 64 Outlet 70 Pedestal 71 Swing mechanism 72 Bulge 77 Support P1 1st side P2 2nd side P3 3rd aspect PA1 1st distribution channel PA2 Second distribution channel S1 1st space S2 2nd space

Claims

1. A housing and A fan installed inside the housing for taking in outside air; A heating device that heats the air taken in by the fan; a duct having an inlet for introducing air taken in by the fan and an outlet for discharging the air introduced from the inlet, the housing includes a main body case, a front panel, and a guard attached to the front panel; the front panel has a blowing portion formed of a hole penetrating the front panel, and a guard accommodating portion formed of a recess for accommodating the guard, The guard is made of heat-resistant resin, and an outlet is provided near the lower end of the guard, the outlet penetrating the outlet section and connected to the outlet for blowing air heated by the heating device to the outside, and in order to prevent deformation of the front panel due to the heat of the warm air from the outlet, the remaining area above the entire outlet and near the upper end of the guard does not have the outlet.

2. The heating apparatus according to claim 1 , wherein the guard has a plurality of fins protruding forward of the air outlet.

Images