Hot air heating system

Abstract

To provide a hot air heating device which can achieve a simple structure and inhibit an ion generator from being exposed to high temperature.SOLUTION: A hot air heating device 10 includes: a casing 20; a combustion part 31; air blowing means; an air inlet 26; an air outlet 27; a first draft trunk R1 which guides air taken into the device through the air inlet 26 to the air blowing means through the combustion part 31; a second draft trunk R2 which guides air blown from the air blowing means to the air outlet 27; an ion generator 40 disposed in the casing 20 and having an electrode and a high voltage supply part; and a third draft trunk R3 which guides air taken into the device through the air inlet 26 to the air blowing means without causing the air to go through the combustion part 31. The ion generator 40 is disposed in the third draft trunk R3.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a warm air heating device provided with an ion generator.

Background Art

[0002] Conventionally, there has been a warm air heating device that blows out warm air heated by a burner. Some of these warm air heating devices are provided with an ion generator that generates ions. In order to generate ions at a predetermined concentration, such an ion generator needs to be disposed at a location where there is an air flow within the warm air heating device.

[0003] For example, in Patent Document 1 below, a ventilation path is provided within a frame, a combustion chamber of a burner is disposed within the ventilation path, indoor air blown into the ventilation path by a convection fan becomes hot and is blown out into the room from a warm air outlet, and an electrode connected to a high-voltage power supply device is disposed facing the ventilation path. The electrode is connected to a negative high voltage, and the ventilation path is connected to a positive high voltage, and negative ions generated from the electrode are blown out from the warm air outlet. A warm air heater is described.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the case of the warm air heater of Patent Document 1 above, among the members constituting the ion generator, while the electrode is disposed facing the ventilation path, the high-voltage power supply device is disposed in the frame, and since each member is disposed at a separate location, the structure of the warm air heater was complicated. Further, since the electrode is disposed facing the ventilation path, it was easily exposed to high temperatures.

[0006] Therefore, the object of the present invention is to provide a hot air heating device that can have a simple structure and can suppress exposure of the ion generator to high temperatures. [Means for solving the problem]

[0007] To achieve the above objective, the present invention provides a hot air heating device comprising a casing, a combustion section housing a heating means, a blowing means, an air intake port for taking air into the casing, an air outlet for blowing air out of the casing, a first air passage that guides the air taken in from the air intake port to the blowing means via the combustion section, a second air passage that guides the air blown out from the blowing means to the air outlet, and an ion generator disposed inside the casing having electrodes and a high voltage supply unit, wherein the device further comprises a third air passage that guides the air taken in from the air intake port to the blowing means without passing through the combustion section, and the ion generator is disposed in the third air passage. The ion generator is located inside the casing and comprises a combustion chamber having the combustion section and the blowing means, the casing having a plurality of walls and having cooling holes in the portion of the combustion chamber where the blowing means is located to cool the blowing means, the third air passage is in communication with the first air passage through the cooling holes, and the ion generator is fixed to the wall of the casing facing the cooling holes. It is characterized by being present.

[0008] According to the above invention, since the electrodes and high-voltage supply unit of the ion generator are both located in a third airflow path that does not pass through the combustion section, a hot air heating device equipped with an ion generator can be provided with a simple structure. Furthermore, since the third airflow path in which the ion generator is located does not pass through the combustion section, exposure of the ion generator to high temperatures can be suppressed. Furthermore, since the ion generator is fixed to the wall of the casing facing the cooling hole, it is easier to separate the ion generator from the combustion chamber and the first air passage, thereby more effectively suppressing exposure of the ion generator to high temperatures. Also, by suppressing exposure of the ion generator to high temperatures, the heat resistance of the ion generator can be increased, which suppresses deterioration of the electrodes of the ion generator and allows for the discharge of ions at an appropriate concentration over a long period of time. In addition, since the third air passage can be reliably connected to the first air passage via the cooling hole, the ions generated by the ion generator in the third air passage can flow smoothly into the first air passage and be discharged from the outlet together with the air flowing through the second air passage and blown out from the outlet, thereby ensuring a sufficient concentration of ions in the warm air and air discharged from the outlet.

[0009] In the hot air heating device according to the present invention, it is preferable that the device comprises a combustion chamber located inside the casing and having the combustion section and the air blowing means, the combustion chamber having a short-circuit hole, the third air passage communicating with the first air passage through the short-circuit hole, and the ion generator being located in the third air passage between the intake port and the short-circuit hole.

[0010] According to the above embodiment, since the ion generator is positioned between the intake port and the short-circuit hole in the third air passage, it is easier to separate the ion generator from the combustion chamber and the first air passage, thereby more effectively suppressing exposure of the ion generator to high temperatures. Furthermore, by suppressing exposure of the ion generator to high temperatures, the heat resistance of the ion generator can be increased, thereby suppressing deterioration of the electrodes of the ion generator and enabling the discharge of ions at an appropriate concentration over a long period of time. Moreover, since the third air passage can be reliably connected to the first air passage via the short-circuit hole, the ions generated by the ion generator in the third air passage can flow smoothly into the first air passage and be discharged from the outlet together with the air that flows through the second air passage and is blown out from the outlet, thereby ensuring a sufficient concentration of ions in the warm air and air discharged from the outlet.

[0013] In the hot air heating device according to the present invention, the casing has a pair of side walls, and a fixing flange for fixing the ion generator is provided on one of the side walls, and the ion generator has a main body having the electrodes and the high voltage supply unit, and a long case that houses and holds the main body, and it is preferable that the case is fixed to one of the side walls by sandwiching the fixing flange with one of the longitudinal sides of the case.

[0014] According to the above embodiment, the ion generator is fixed to the fixing flange by sandwiching the fixing flange between one side of the case in the longitudinal direction. This allows the ion generator to be fixed stably to one side wall of the casing with sufficient strength, and the ion generator can be fixed off-center to one side wall of the casing, thus minimizing obstruction to the airflow through the third air passage and facilitating ion generation. Furthermore, since the ion generator can be fixed to one side wall with a simple operation of sandwiching the fixing flange between one side of the case in the longitudinal direction, the ease of assembly of the ion generator to the casing can be improved. Moreover, even if there is insufficient space inside the casing to fix the ion generator, the ion generator can be securely fixed using the fixing flange.

[0015] In the hot air heating device according to the present invention, it is preferable that the air blowing means can blow air when the heating means is stopped, and also be able to blow air via the ion generator.

[0016] According to the above embodiment, the blowing means can blow air while the heating means is stopped, and can also blow air via the ion generator. Therefore, even in summer when heating is not normally performed, the hot air heater can be used as a device for generating ions, thereby increasing the added value of the hot air heater. Furthermore, with the blowing means ON, the ON / OFF of the heating means and the ion generator can be switched as appropriate, so that (1) hot air and ions from heating operation, (2) room temperature air and ions, or (3) hot air only from heating operation can be blown out from the outlet, allowing the hot air heater to be used appropriately according to the user's wishes. [Effects of the Invention]

[0017] According to the present invention, since the ion generator is located in a third airflow path that does not pass through the combustion section, a hot air heating device equipped with an ion generator can be provided with a simple structure, and exposure of the ion generator to high temperatures can be suppressed.

Brief Description of the Drawings

[0018] [Figure 1] It is a perspective view showing an embodiment of the warm-air heating device according to the present invention. [Figure 2] It is a schematic explanatory view of the warm-air heating device. [Figure 3] It is a front view of the warm-air heating device with the front wall portion of the casing removed. [Figure 4] It is a side view of the warm-air heating device with one side wall portion of the casing removed. [Figure 5] It is an enlarged perspective view of the main part of the warm-air heating device before fixing the ion generator to the casing. [Figure 6A] It shows the ion generator constituting the warm-air heating device, and it is a side view thereof. [Figure 6B] It shows the ion generator constituting the warm-air heating device, and it is a bottom view thereof. [Figure 7] In the warm-air heating device, it shows the state where the ion generator is fixed to one side wall portion of the casing, and it is an enlarged cross-sectional explanatory view of the main part along the A-A arrow line in FIG. 1.

Modes for Carrying Out the Invention

[0019] (An Embodiment of the Warm-Air Heating Device) Hereinafter, referring to the drawings, an embodiment of the warm-air heating device according to the present invention will be described.

[0020] As shown in FIGS. 1 to 5 and the like, this warm air heating device 10 mainly includes a casing 20, a combustion part 31 that houses heating means, a blowing means (here, a blower fan 32), an air inlet 26 that takes in air into the casing 20, an air outlet 27 that blows out air from the casing 20, a first air duct R1 (hereinafter, also simply referred to as "the first air duct R1") that guides the air taken in from the air inlet 26 through the combustion part 31 to the blowing means, a second air duct R2 (hereinafter, also simply referred to as "the second air duct R2") that guides the air blown out from the blowing means to the air outlet 27, and an ion generator 40 that is disposed inside the casing 20 and has an electrode 51 and a high voltage supply part 52 (see FIGS. 5 to 7).

[0021] Also, as shown in FIG. 2, the warm air heating device 10 includes a third air duct R3 (hereinafter, also simply referred to as "the third air duct R3") that guides the air taken in from the air inlet 26 to the blowing means without passing through the combustion part 31, and the ion generator 40 is disposed in the third air duct R3.

[0022] Furthermore, as shown in FIG. 2, the warm air heating device 10 of this embodiment includes a combustion chamber 30 that has a combustion part 31 and a blower fan 32 which is a blowing means inside the casing 20. In this embodiment, the heating means is a burner not shown in the figure.

[0023] First, the casing 20 and the combustion chamber 30 will be described in detail.

[0024] The casing 20 has multiple walls. In this embodiment, the casing 20 is composed of a front wall 21 located on the front side, a rear wall 22 located on the rear side, a pair of side walls 23 and 24 located on both sides of these walls 21 and 22, and a ceiling wall 25 located on the upper end side of each wall. The rear wall 22 is provided with air intake ports 26 for drawing in air from outside the casing 20. Multiple air intake ports 26 are formed extending from one end to the other in the longitudinal direction of the rear wall 22. On the other hand, the front wall 21 has outlet ports 27 for blowing out air, warm air, or ions I (see Figure 2).

[0025] The ceiling wall section 25 is provided with a switch 25a that allows you to turn on and off at least three modes: (1) an "ion generating heating operation mode" that can blow out ions I along with warm air from the outlet 27, (2) an "ion generating fan operation mode" that can blow out ions I and ambient temperature air from the outlet 27, and (3) a "heating operation mode" that can blow out only warm air from the outlet 27 (each mode will be described later).

[0026] As shown in Figure 2, the combustion chamber 30 includes a burner case 33 containing a combustion section 31 having a burner (not shown) which is a heating means, and a fan case 34 connected below the burner case 33 and rotatably supporting a blower fan 32 which is a blowing means. Furthermore, at least a portion of the internal space within the burner case 33 and the internal space within the fan case 34 constitute the first air passage R1.

[0027] Furthermore, the blower fan 32 is a so-called convection fan and is positioned to align with the outlet 27 of the casing 20. The portion of the internal space within the fan case 34 leading up to the outlet 27 forms the second air passage R2 (see Figure 2).

[0028] Furthermore, as shown in Figure 3, the third air passage R3 is provided between one side wall 23 of the casing 20 and the burner case 33 and fan case 34 that constitute the combustion chamber 30. The temperature inside the third air passage R3 is at least lower than the temperature inside the first air passage R1.

[0029] Furthermore, a gas supply unit 37 having a plurality of valves 37a, 37b, and 37c with predetermined functions is located upstream of the combustion chamber 30, so that gas is supplied to the combustion unit 31 as needed. In addition, the blower fan 32 is rotated by a motor 34a connected to the side of the fan case 34. When the blower fan 32 is rotated by the motor 34a, air from outside the casing 20 is drawn into the air passage R1 of the combustion chamber 30 from the intake port 26 and is also blown to the combustion unit 31. The air heated by the burner in the combustion unit 31 mixes with the air that has not passed through the combustion unit 31 and has not been heated by the burner, resulting in warm air. This warm air is then blown out of the casing 20 from the outlet 27 by the blower fan 32 through the second air passage R2.

[0030] Furthermore, a portion of the air taken into the casing 20 from the intake port 26 is blown to the third air passage R3 without passing through the combustion section 31, and ions I are generated by the ion generator 40 located in the third air passage R3.

[0031] Furthermore, as shown in Figure 2, a short-circuit hole 35 is formed in the combustion chamber 30, and the third air passage R3 is in communication with the first air passage R1 through the short-circuit hole 35. Specifically, as shown in Figures 3 and 4, a plurality of circular short-circuit holes 35 are formed on the side (the surface facing the side wall portion 23) and front (the surface facing the front wall portion 21) of the burner case 33 that constitutes the combustion chamber 30. The ion generator 40 is positioned in the third air passage R3 between the intake port 26 and the short-circuit hole 35. These short-circuit holes 35 connect the first air passage R1 and the third air passage R3 to each other, making it possible to guide the ions I generated by the ion generator 40 in the third air passage R3 into the first air passage R1.

[0032] Furthermore, as shown in Figure 2, cooling holes 36 are formed in the combustion chamber 30 in the portion where the blower fan 32, which is the blowing means, is located, to cool the blowing means. Specifically, as shown in Figure 4, a plurality of slit-shaped cooling holes 36 are formed on the side surface of the fan case 34 that constitutes the combustion chamber 30. The ion generator 40 is positioned in the third air passage R3 between the intake port 26 and the cooling holes 36. These cooling holes 36 connect the first air passage R1 and the third air passage R3 to each other, cooling the blower fan 32 inside the fan case 34, and allowing ions I generated by the ion generator 40 in the third air passage R3 to be guided into the first air passage R1.

[0033] Returning to the description of one side wall portion 23 that constitutes the casing 20, as shown in Figures 3 and 5, a bent portion 28 is formed at the end of one side wall portion 23 on the front wall portion 21 side. At a predetermined position in the height direction of this bent portion 28, as shown in Figure 3, a thin plate-shaped fixing flange 29 is provided for fixing the ion generator 40 between the combustion section 31 and the blower fan 32 that constitute the combustion chamber 30. As shown in Figure 5, a projection 29a narrower than the fixing flange 29 is provided protruding from above the fixing flange 29. Furthermore, a pair of fixing holes 29b, 29b are formed in the fixing flange 29.

[0034] Furthermore, one side wall portion 23 is positioned to face the third air passage R3 and is also positioned opposite the short-circuit holes 35 (particularly the short-circuit holes 35 formed on the side of the burner case 33) and cooling holes 36 provided in the combustion chamber 30. The ion generator 40 is fixed to this side wall portion 23. In addition to the side wall portion 23, the ion generator 40 may also be fixed to the front wall portion 21 or the rear wall portion 22 of the casing 20.

[0035] Furthermore, in the hot air heating device 10 of this embodiment, the blowing means can blow air while the heating means is stopped, and can also blow air via the ion generator 40. Therefore, when the blowing means is ON, the ON / OFF of the heating means and the ion generator 40 can be switched on and off as appropriate, allowing selection of three modes: (1) an "ion generating heating operation mode" in which ions I can be blown out from the outlet 27 along with hot air, (2) an "ion generating blowing operation mode" in which ions I and room temperature air can be blown out from the outlet 27, and (3) a "heating operation mode" in which only hot air can be blown out from the outlet 27.

[0036] In other words, when the heating means is stopped and only the blowing means is operated, air from outside the casing can be blown into the third air passage R3, and this air is supplied around the electrodes 51 of the ion generator 40. As a result, ions I are generated by the ion generator 40 in the third air passage R3, and these ions I are guided to the first air passage R1 via the short-circuit holes 35 and cooling holes 36, circulated through the second air passage R2, and blown out from the outlet 27 together with ambient temperature air. This is the "ion generation blowing operation mode" described in (2) above. The "ion generation heating operation mode" described in (1) above and the "heating operation mode" described in (3) above will be described later.

[0037] Next, the ion generator 40 will be described in detail with reference to Figures 5-7.

[0038] This ion generator 40 has a main body 50 having electrodes 51 and a high-voltage supply unit 52, and a long case 60 that houses and holds the main body 50.

[0039] The main body 50 is elongated in one direction and is provided with a high-voltage supply unit 52. An insertion slot 53 for inserting a power connector (not shown) is provided above one end of the main body 50 in the longitudinal direction. A pair of electrodes 51, 51 are suspended from both ends of the main body 50 in the longitudinal direction on its lower surface.

[0040] Then, when high voltage is supplied to the high-voltage supply unit 52 via a power connector by a conductive means (not shown), the air flowing through the pair of electrodes 51, 51 in the third air passage R3 undergoes corona discharge and generates ions I (negative ions) (see Figure 2). Furthermore, since the third air passage R3 is in communication with the first air passage R1 by a short-circuit hole 35 and a cooling hole 36, the ions I generated in the third air passage R3 are guided to the first air passage R1 and also flow through the second air passage R2, and are blown out from the outlet 27 together with warm air (in the ion-generating heating operation mode) or with ambient temperature air (in the ion-generating fan operation mode) (see Figure 2).

[0041] Then, when the switch 25a for the "ion generation heating operation mode" described in (1) above is activated, the heating means, the blowing means, and the ion generator 40 are activated. As a result, the ions I generated in the third air passage R3 by the ion generator 40 are guided to the first air passage R1 through the short-circuit hole 35 and the cooling hole 36, and together with the warm air heated by the heating means, they flow through the second air passage R2 and are blown out from the outlet 27.

[0042] On the other hand, when the switch 25a for the "ion generation and blowing operation mode" described in (2) above is activated, the heating means does not operate, but the blowing means and the ion generator 40 operate. As a result, the ions I generated in the third air passage R3 by the ion generator 40 are guided to the first air passage R1 through the short-circuit holes 35 and cooling holes 36, and together with ambient temperature air, they flow through the second air passage R2 and are blown out from the outlet 27.

[0043] Furthermore, when the switch 25a for the "heating operation mode" described in (3) above is activated, the ion generator 40 does not operate, but the heating means and the blowing means do operate. As a result, the warm air heated by the heating means and flowing through the first air passage R1 mixes with the air from the third air passage R3 that flows into the first air passage R1 from the short-circuit hole 35 and the cooling hole 36, and this mixture flows through the second air passage R2 and is blown out from the outlet 27.

[0044] Furthermore, an electrode enclosure frame 54 is provided on the lower surface of the main body 50, with openings at the bottom and sides, surrounding the pair of electrodes 51, 51. This electrode enclosure frame 54 protects the pair of electrodes 51, 51 while allowing air to flow to them.

[0045] On the other hand, the case 60 is a long, box-shaped structure with an open bottom, and consists of a frame-like body 61 capable of housing and holding the main body 50, and a roughly L-shaped fixing piece 62 connected via a slit 63 to the other end of the frame-like body 61 in the longitudinal direction (which can also be described as one side of the frame-like body 61 in the longitudinal direction). On the inside of the frame-like body 61, a pair of flexible and deformable engaging claws 64 and 65 extend from both ends in the longitudinal direction. As shown in Figure 6B, the main body 50 is housed and held in the case 60 by the engagement of the pair of engaging claws 64 and 65 with both ends in the longitudinal direction of the main body 50 housed in the frame-like body 61. Also, as shown in Figure 6A, a fixing hole 66 is formed at the lower end of the fixing piece 62 for tightening and fixing fasteners 67 such as screws or bolts.

[0046] In this embodiment, the case 60 is fixed to one side wall portion 23 by sandwiching the fixing flange 29 between two longitudinal portions of the case 60.

[0047] Specifically, the fixing flange 29 is inserted into the slit 63 of the case 60, and the projection 29a provided above the fixing flange 29 is engaged with the upper inner surface of the fixing piece 62. Then, the fixing hole 66 of the fixing piece 62 and the fixing hole 29b of the fixing flange 29 are tightened and secured with the fixing device 67 (see Figure 7). As a result, the case 60 is fixed to the side wall portion 23 with the fixing flange 29 sandwiched between the other end of the frame-shaped body 61 of the case 60 and the fixing piece 62, and consequently, the ion generator 40 is fixed so that it is located in the third air passage R3 inside the casing 20.

[0048] Furthermore, as described above, the ion generator 40 is positioned in the third air passage R3, and is fixed to the side wall portion 23 of the casing 20, which is positioned opposite the short-circuit hole 35 and the cooling hole 36. In addition, as shown in Figures 3 to 5, the ion generator 40 is fixed between the intake port 26 and the short-circuit hole 35 of the third air passage R3, and between the intake port 26 and the cooling hole 36 of the third air passage R3. In particular, in this embodiment, as shown in Figure 4, the ion generator 40 is positioned such that a part of the ion generator 40 overlaps with the short-circuit hole 35 formed on the side surface of the burner case 33.

[0049] However, the ion generator may be positioned such that a portion of it overlaps with the cooling holes 36 formed on the side of the fan case 34, or it may be fixed to the front wall 21 or rear wall 22 other than the side wall 23, and its layout is not particularly limited as long as it is located in the third air passage R3.

[0050] Furthermore, in this embodiment, when the ion generator 40 is fixed in the third air passage R3 within the casing 20 as described above, one longitudinal end of the ion generator 40 faces the rear wall portion 22 of the casing 20, the other longitudinal end of the ion generator 40 faces the front wall portion 21 of the casing 20, and one side of the ion generator 40 is positioned opposite one side wall portion 23 of the casing 20 (see Figures 4 and 5).

[0051] Furthermore, this hot air heating device 10 does not have any special structure (such as ion emission holes, ion emission fans, or ion emission fan motors) for releasing the ions generated by the ion generator 40. The shape, structure, and layout of the ion generator are not limited to the above-described configuration.

[0052] (Effects and Benefits) Next, the effects and benefits of the hot air heating device 10, which has the above configuration, will be explained.

[0053] In other words, when the switch 25a for the "ion generation heating operation mode" of the hot air heating device 10 is turned ON, the heating means, the blowing means, and the ion generator 40 are activated. As a result, gas is supplied from the gas supply unit 37 to the combustion unit 31, and the blower fan 32 draws air from outside the casing into the first air passage R1 of the combustion chamber 30 through the intake port 26 and blows it into the combustion unit 31, where it is heated by a burner (not shown) in the combustion unit 31 to become hot air. In addition, a portion of the air drawn into the casing 20 from the intake port 26 is blown into the third air passage R3, where ions I are generated by the ion generator 40, and these ions I flow into the first air passage R1 through the short-circuit holes 35 and cooling holes 36. As a result, the blower fan 32 causes the ions I to circulate through the second air passage R2 together with the hot air, and then blow them out from the outlet 27.

[0054] On the other hand, when the switch 25a for "ion generation and blowing operation mode" is turned ON, the blowing means and the ion generator 40 are activated. As a result, ions I generated by the ion generator 40 in the third air passage R3 flow into the first air passage R1 through the short-circuit holes 35 and cooling holes 36, and the blower fan 32 draws ambient temperature air from outside the case into the first air passage R1 through the intake port 26. Consequently, the ions I circulate through the second air passage R2 together with the ambient temperature air before being blown out from the outlet 27 (see Figure 2).

[0055] Furthermore, when the "heating operation mode" switch 25a is turned ON, the heating means and the blowing means are activated. As a result, gas is supplied from the gas supply unit 37 to the combustion unit 31, and the blower fan 32 draws air from outside the casing into the first air passage R1 of the combustion chamber 30 through the intake port 26 and blows it to the combustion unit 31. This air is heated by a burner (not shown) in the combustion unit 31 to become warm air, which is then blown out from the outlet 27 after passing through the second air passage R2 by the blower fan 32.

[0056] Furthermore, in this hot air heating device 10, the ion generator 40 is arranged in a third airflow path R3 that does not pass through the combustion section 31, as the pair of electrodes 51, 51 and the high-voltage supply unit 52 are all located in the third airflow path R3. Therefore, a hot air heating device 10 equipped with an ion generator 40 can be provided with a simple structure. In addition, since the third airflow path R3 in which the ion generator 40 is located does not pass through the combustion section 31, exposure of the ion generator 40 to high temperatures can be suppressed.

[0057] Furthermore, in this embodiment, the ion generator 40 is positioned in the third air passage R3 between the intake port 26 and the short-circuit hole 35, and is also fixed to the side wall portion 23 of the casing 20 that faces the short-circuit hole 35 and the cooling hole 36.

[0058] Therefore, the ion generator 40 can be fixed in a position as far away as possible from the combustion chamber 30 and the first air passage R1, and exposure of the ion generator 40 to high temperatures can be more effectively suppressed.

[0059] Furthermore, by suppressing exposure of the ion generator 40 to high temperatures, the heat resistance of the ion generator 40 can be increased, thereby suppressing deterioration of the electrodes 51 of the ion generator 40 and enabling the discharge of ions at an appropriate concentration over a long period of time.

[0060] Furthermore, since the third air passage R3 can be reliably connected to the first air passage R1 via the short-circuit holes 35 and cooling holes 36, the ions I flowing through the third air passage R3 can be smoothly introduced into the first air passage R1, ensuring a sufficient concentration of ions in the warm air and air blown out from the outlet 27.

[0061] Furthermore, in this embodiment, the ion generator 40 is fixed to the fixing flange 29, which is provided on the casing 20 side, by sandwiching the fixing flange 29 on one side of the longitudinal direction of the case 60.

[0062] As described above, the fixing flange 29 is sandwiched between one longitudinal side of the case 60. In this case, the fixing flange 29 is sandwiched between the other longitudinal end of the frame-shaped body 61 of the case 60 and the fixing piece 62. Therefore, the ion generator 40 can be fixed to one side wall 23 of the casing 20 with sufficient strength. In other words, when fixing only one side of a long member to an object, the strength may be insufficient or the fixing state may be unstable. Therefore, it is usually necessary to fix the long member to the object on both sides. However, in this embodiment, as described above, the fixing flange 29 is sandwiched between one longitudinal side of the case 60, so the ion generator 40 can be fixed to the side wall 23 with sufficient strength, stability, and in a simple structure.

[0063] Furthermore, since the ion generator 40 can be fixed to one side wall 23 of the casing 20, it is less likely to obstruct the airflow through the third air passage R3, making it easier to generate ions I.

[0064] Furthermore, the ion generator 40 can be fixed to the side wall 23 of the casing 20 by simply sandwiching the fixing flange 29 between the longitudinal sides of the case 60, thus improving the ease of assembly of the ion generator 40 to the casing 20.

[0065] Furthermore, even if there is insufficient space inside the casing 20 to securely fix the ion generator 40, the fixing flange 29 can be used to securely fix the ion generator 40.

[0066] Furthermore, in this embodiment, the ion generator 40 is positioned in the third air passage R3 within the casing 20, and the ions I flow through the first air passage R1 and the second air passage R2, which communicate with the third passage R3, and are blown out from the outlet 27. Therefore, ion emission holes, ion emission fans, ion emission fan motors, etc., are not required. As a result, the structure of the hot air heating device 10 can be simplified, manufacturing costs can be reduced, and weight reduction can also be achieved.

[0067] Furthermore, in this embodiment, the blowing means can blow air while the heating means is stopped, and can also blow air via the ion generator 40.

[0068] According to this embodiment, even in summer when heating operation is not normally performed, the hot air heater 10 can be used as a device for generating ions, thereby increasing the added value of the hot air heater 10. Furthermore, with the blower ON, the ON / OFF of the heating means and the ion generator can be switched as appropriate, so that (1) hot air and ions from the heating operation, (2) ambient air and ions, or (3) only hot air from the heating operation can be blown out from the outlet, allowing the hot air heater 10 to be used appropriately according to the user's wishes.

[0069] It should be noted that the present invention is not limited to the embodiments described above, and various modified embodiments are possible within the scope of the gist of the present invention, and such embodiments are also included in the scope of the present invention. [Explanation of Symbols]

[0070] 10...Hot air heating device, 20...Casing, 23...Side wall, 26...Intake port, 27...Outlet, 29...Fixing flange, 30...Combustion chamber, 31...Combustion section, 32...Blower fan (air blowing means), 35...Short-circuit hole, 36...Cooling hole, 40...Ion generator, 50...Main body, 51...Electrode, 52...High voltage supply section, 60...Case, R1...First air passage, R2...Second air passage, R3...Third air passage, I...Ion

Claims

1. Casing and, A combustion section housing a heating means, A means of blowing air, The casing has an air intake port for taking in air, An outlet for blowing air out of the casing, A first air passage guides the air taken in from the intake port to the blowing means via the combustion section, A second air passage guides the air blown out from the aforementioned blowing means to the aforementioned outlet, In a hot air heating device comprising an ion generator disposed inside the casing and having electrodes and a high-voltage supply unit, The system includes a third air passage that guides the air taken in from the intake port to the blowing means without passing through the combustion section, The ion generator is located in the third airflow path, Displaced inside the casing, the combustion chamber comprises the combustion section and the blowing means, The casing has multiple wall sections and a cooling hole in the portion of the combustion chamber where the blower is located, for cooling the blower. The third air passage is in communication with the first air passage through the cooling hole. The hot air heating device is characterized in that the ion generator is fixed to the wall of the casing facing the cooling holes.

2. Displaced inside the casing, the combustion chamber comprises the combustion section and the blowing means, A short-circuit hole is formed in the combustion chamber. The third air passage is in communication with the first air passage through the short-circuit hole. The hot air heating device according to claim 1, wherein the ion generator is located in the third air passage between the air intake and the short-circuit hole.

3. The casing has a pair of side walls, and a fixing flange for fixing the ion generator is provided on one of the side walls. The ion generator comprises a main body having the electrodes and the high-voltage supply unit, and a long case that houses and holds the main body. The hot air heating device according to claim 1 or 2, wherein the case is fixed to one of the side walls by sandwiching the fixing flange with one of the longitudinal portions of the case.

4. The hot air heating device according to claim 1, wherein the blowing means blows air when the heating means is stopped and also blows air via the ion generator. 。

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