JPS6124619B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot air blower that can be easily used indoors.

In conventional hot air blowers, a fan is installed on the motor shaft of the motor, shifted from the motor in the axial direction, and a heater is placed in the fan's air blowing direction, that is, on the extended axis of the motor shaft, to draw air into the fan. It is housed in a casing with an opening and an exhaust port.

Therefore, according to the conventional structure in which the motor, the fan, and the heater are arranged on the same axis with their positions shifted, the thickness of the casing increases. Therefore, if you try to install it on a room wall, etc., it will protrude from the room wall and get in the way.
Another drawback is that it is difficult to install it in rooms with small spaces, such as toilets.

This invention was made based on the above circumstances, and by making the casing thinner, it can be made more compact and can be used easily without being restricted by the purpose or place of use, and can blow out hot air at a high temperature. The present invention aims to provide a warm air blower that does the following.

An embodiment of this invention will be described below with reference to FIGS. 1 to 11.
This will be explained with reference to the figures.

1 in the figure is a casing, and this casing 1
The substrate 2 and the top plate 3 are formed in a continuous manner into a flat box shape. A rising wall 4 is provided on the peripheral edge of the substrate 2, and a peripheral side wall 5 is formed on the top plate 3,
These rising walls 4 and circumferential walls 5 are fitted and overlapped, and fixed with screws 6. A spiral plate 7 is interposed in the casing 1 so as to be clamped between the base plate 2 and the top plate 3. This spiral plate 7 has a substantially spiral shape and forms a spiral chamber 8 therein. As shown in FIG. 3, the lower part of the spiral chamber 8 is separated from the casing 1 via an inclined wall 9 formed on the spiral plate 7, and a discharge port 10 is opened in this inclined wall 9. It has been done. Note that this spiral plate 7 is fixed to the substrate 2 by means such as resistance welding. The swirl center of the swirl chamber 8 is unevenly located at one end of the casing 1, and a fan motor 12 consisting of a motor 11 is disposed at this swirl center position. The motor 11 is fixed to a mounting base 11a welded to the inner surface of the substrate 2 with screws 11b or the like. Further, the fan 12 has a boss portion 12
a is connected to a motor shaft (not shown), and this boss portion 12a is adapted to cover the motor 11. A large number of blades 13 are arranged radially on the outer peripheral surface of the boss portion 12a.
These blades 13 are located on the circumferential side of the motor 11. An air intake port 14 is opened in the top plate 3 located on the axis of the motor 11 and the fan 12, in other words, on the spiral center line of the spiral chamber 8, facing the fan 12. An annular fitting step portion 15 is formed on the inner peripheral surface of the intake port 14, and a bell mouth portion 16 is integrally formed on the inner circumference of the fitting step portion 15. A fitting hole 17 is opened in the rising wall of the fitting step 15, as shown in FIGS. An engagement hole 18 is formed in the surface. An intake port guard body 19 is removably fitted into the fitting stepped portion 15. This guard body 19 covers the intake port 14 to prevent fingers, etc. from touching the fan 12, and is integrally molded from, for example, synthetic resin.
It has a large number of ventilation holes 20. On one side of this guard body 19, facing the insertion hole 17,
An insertion arm 21 that is removably inserted into the insertion hole 17 is integrally provided, and is disposed symmetrically to the engagement hole 18 by elastically displacing it into the engagement hole 18. It has a locking piece 22 that can be inserted. Note that 23 is a grip portion to be gripped with fingers or the like. Further, an air filter 24 made of polyurethane or the like is attached to the inner surface of the guard body 19 to filter the air taken in from the ventilation holes 20. And this filter 2
4 becomes dirty or clogged, the guard body 19 is removed and cleaned. On the other hand, a guide opening 25 is provided at the lower part of the spiral chamber 8 so as to face the inclined wall 9 of the spiral plate 7. This guide port body 25 is supported by welding to the substrate 2 on one side, and has a through hole 26 opened at the lower end of a tapered peripheral wall. An elongated heater 27 is attached to this opening 26, and as shown in FIG. 6, the heater 27 is composed of, for example, two positive temperature coefficient thermistors 28, 28 each form a large number of conductive paths 29... and are configured in a comb shape. These positive temperature coefficient thermistors 28, 28 are arranged in parallel with each other, and their upper and lower surfaces are connected to a pair of electrode plates 30,
It is clamped by 30. These electrode plates 3
0 and 30 are positive characteristic thermistors 28 and 28, respectively.
Openings 31, 3 connected to the conduction paths 29..., 29...
1 and is provided with mounting holes 32 that are fixed to the positive temperature coefficient thermistors 28, 28, and screws 33 are inserted into these mounting holes 32 and fastened to the positive temperature coefficient thermistors 28, 28. . These positive temperature coefficient thermistors 28, 28 and electrode plates 30, 3
0 is fitted into an insulating frame 34, and is supported by attaching this insulating frame 34 to the guide port 25. In other words, the insulating frame 34
is made of, for example, magnetic material, has a fitting part 35 at its upper end that matches the through hole 26 of the guide port body 25, and has notches 36, 36 on both sides of its lower end from which both ends of the lower electrode plate 30 protrude. have. Then, insert the fixing screws 37, 37 into both ends of this lower electrode plate 30 from below.
By screwing the PTC thermistors 28, 28, electrode plates 30, 30, and insulating frame 34 onto the guide port 25, the PTC thermistors 28, 28, electrode plates 30, 30, and insulating frame 34 are integrally assembled and attached to the guide port 25. Therefore, the positive temperature coefficient thermistors 28, 28 and the electrode plates 30, 30 are electrically and thermally insulated from the casing 1, the spiral plate 7, etc. Note that each electrode plate 30, 30 is connected to a power source via a lead wire (not shown). Further, a sealing member 38 made of a sponge material or the like is attached between the guide port 25, the spiral plate 7, and the top plate 3. The inclined wall 9 of the spiral plate 7 is located near the bottom of the heater 27, and the front plate 3 of the casing 1 faces the inclined wall 9. The exhaust port 39 is opened. This first exhaust port 39 is provided on the same surface as the front surface of the casing 1 where the intake port 14 is provided. A body 40 is attached via screws 41. In addition, the casing 1 located below the inclined wall 9
A second exhaust port 42 is opened on the lower surface of the
This second exhaust port 42 communicates with the swirl chamber 8 via a discharge port 10 formed in the inclined wall 9 . By the way, either the first exhaust port 39 or the second exhaust port 42 can be selected and used, and this selection is made by the wind direction switching plate 43. The wind direction switching plate 43 is shown in FIGS. 7 and 8.
As shown in the figure, there are mounting pieces 44, 44 bent at the bottom of both ends, and these mounting pieces 44, 44 are attached to the inner peripheral edge of the first exhaust port 39 via stepped screws 45, 45. There is. Therefore, the wind direction switching plate 43 can be rotated around the stepped screws 45, 45, and when it is rotated in the direction of the inclined wall 9, the outlet 10 of the inclined wall 9 is closed. ,
Moreover, when it is rotated toward the top plate 3 side, the first exhaust port 39 is closed. This wind direction switching plate 43
As shown in FIG. 8, an operating piece 46 extends from one of the mounting pieces 44 of the top plate 3, and this operating piece 46 protrudes outward from the top plate 3 through a through hole 47 formed on one side of the top plate 3. has been done. And the tip of this operation piece 46,
In other words, an operating knob 48 is attached to a portion located on the outside of the top plate 3, and when the operating knob 48 is rotated outside the casing 1, the wind direction switching plate 43
is now being rotated. Note that this wind direction switching plate 43 can be rotated in reverse via a toggle spring 49. That is, one end of the toggle spring 49 is secured to the upper end of the wind direction switching plate 43, and the other end of the toggle spring 49 is secured to the spring receiver 50 attached to the inner surface of one side of the top plate 3. It is. On the other hand, as shown in FIG. 9, in the upper part of the substrate 2, bell-shaped locking holes 51, 51 are formed spaced apart from each other.
1 and 51 can be removably engaged with hooks 53 and 53 protruding from a support beam 52 provided on the mounting surface. Further, an abutting tool 54 is provided at the center of the lower part of the substrate 2. This contact tool 54
The pad 55 made of an elastic material such as rubber is attached to the screw 5.
6, and this screw 56 is screwed into a nut member 57 fixed to the substrate 2 so that it can move forward and backward. Therefore, the abutting tool 54 can be made to protrude from the back surface of the board 2 by adjusting the amount of protrusion, so that it comes into contact with a mounting surface such as a chamber wall. Further, on the surface of the top plate 3, there is a power switch 58 and a switch 59 for switching on and off the heater 27.
is provided. The motor 11 and heater 27 have a circuit configuration as shown in FIG. 10, and the switches 58 and 59 are interposed in this circuit. Note that the power cord 60 60 is a plug.

In the above-mentioned embodiment having such a configuration, the locking holes 51, 51 of the casing board 2 are locked to the hooks 53, 53 of the support crosspiece 52 provided on the mounting surface such as the wall of a desired room. Further, by adjusting the amount of protrusion of the abutting tool 54 and bringing the abutting tool 54 into contact with the mounting surface, it is supported vertically. Then, connect the plug 61 to the outlet and turn on the power switch 58.
When turned on, the motor 11 rotates and the fan 12
to drive. This rotation of the fan 12 causes the fan 12 to suck in outside air from the intake port 14. This fan 12 speeds up outside air sucked in through the intake port 14 using blades 13 . . . and sends it out in a direction opposite to the intake port 14 . However, since the substrate 2 faces directly in this direction, the air (wind) sent out by the blades 13 hits the substrate 2, changes its direction, is guided by the spiral plate 7, and is guided into the spiral chamber 8. flows in the direction of the arrow. This air passes through the guide port 25 and the heater 27, but in this case, the heater 27 is not energized, so the air passes through without being heated and reaches the inclined wall 9. When the wind direction switching plate 43 is rotated so as to come into contact with the inclined wall 9 side, the discharge port 10 of the inclined wall 9 is closed and the first exhaust port 39 is opened, so that the heater 27 The flow direction of the wind that has passed is changed by the wind direction switching plate 43 and is discharged from the first discharge port 39 .

Note that by rotating the wind direction switching plate 43 in the opposite direction, the discharge port 10 of the inclined wall 9 and the second exhaust port 4 are connected to each other.
2 may be discharged downward from the casing 1, in which case indoor air is circulated to function as a circulator.

When the heater on/off switch 59 is turned on, the heater 27 is energized and the heater 27 generates heat, so that the air passing through the heater 27 is heated. In this case, since positive temperature coefficient thermistors 28, 28 are used as the heater 27, the resistance value increases as the temperature rises, and therefore a special thermoswitch for temperature control is not required. Further, since the heater 27 crosses the air flow leading to the first exhaust port 39, the entire amount of air is heated by the elongated heater 27, and since the heater 27 is located near the first exhaust port 39, Hot air immediately after heat exchange is quickly blown out without increasing the temperature of the casing 1. Moreover, since the PTC thermistors 28, 28 have a large number of conductive paths 29 formed in a comb shape, the air passing through them has a large contact area with the PTC thermistors 28, 28, resulting in good heating efficiency. The rate of disturbance of the wind flow direction is small. If the hot air thus heated is discharged through the first exhaust port 39, for example, it is convenient to locally warm the area in front of the first exhaust port 39, and the second If the hot air is discharged through the exhaust port 42, warm air is circulated inside the room and can be used for overall heating.

According to the above configuration, although the fan 12 is connected to the motor 11 and is arranged on the motor shaft, the motor 11 is wrapped around the boss 12a, and the blades 13 are attached to the outer periphery of the boss 12a. Because of this arrangement, the space in the motor axial direction can be reduced. Furthermore, since the heater 27 is disposed not on the axis of the fan motor but on the outside of the fan motor, this arrangement prevents the heater 27 from causing the casing 1 to become thicker. Therefore, for these reasons, the thickness of the casing 1 can be reduced, and the casing 1 can be configured to be thin. Therefore, since the entire blower can be made smaller and more compact, it does not require a large installation space. Therefore, as shown in Figure 11a, b, etc.
It can be installed under a desk or on the wall of a toilet room, allowing it to be used in a wide range of locations and purposes. Furthermore, since the casing 1 is compact and can be attached to and detached from the mounting surface, it can be carried and used, such as changing the mounting location as necessary.

Note that this invention is not limited to the above embodiments, and various modifications can be made without departing from the gist of the invention.

In other words, the second
In this embodiment, an intake port 14 is provided on the substrate 2 of the casing 1.
A first exhaust port 39 is formed on the front side of the top plate 3 of the casing 1, and a second exhaust port 42 is formed on the bottom side.

In this way, outside air can be sucked in from the air intake port 14 of the board 2 through the gap between the casing 1 and the mounting surface such as a wall. Therefore, since the intake port 14 and especially the first exhaust port 39 are not close to each other, the air discharged from the first exhaust port 39 immediately reaches the intake port 1.
4, and since the intake port 14 is not visible from the outside, the appearance is improved.

Further, in the above-mentioned device, as shown in FIG. 13, the intake port guard body is integrally formed with the base plate, that is, the intake port is composed of a plurality of slits 70, and the casing 1 in which the intake port 14 is formed. One side of the
By inserting and removing the filter plate 72 to which the air filter 71 is attached, the air intake port 14
An air filter 71 is disposed at.

In this way, when cleaning the filter 71, only the filter plate 72 can be removed and cleaned without removing the casing 1 from the mounting surface.

Furthermore, the structure of the reversing operation of the wind direction switching plate 43 is as shown in FIG. By selectively fitting the wind direction switching plate 43, the inclination of the wind direction switching plate 43 can be adjusted in multiple stages, and the wind direction switching plate 43 can be reliably stopped at the adjusted position. In this way, not only can the first exhaust port 39 and the second exhaust port 42 be used selectively, but also
Both exhaust ports 39, 42 can be used simultaneously to blow air, and in this case, the air volume of each exhaust port 39, 42 can be varied.

Furthermore, when installing the heater 27 consisting of the positive temperature coefficient thermistors 28, 28, the thickness of the casing 1 can be reduced by installing the positive coefficient thermistors 28, 28 at an angle as shown in FIG. Contribute. In this case, the conduction path 29 is connected to the positive temperature coefficient thermistors 28 and 2 so as not to obstruct ventilation.
What is necessary is to make it penetrate diagonally with respect to 8.

Further, the present invention may be modified as shown in FIG. 16. That is, in this device, air intake ports 80 and 81 are provided on mutually opposing surfaces of the casing 1, that is, on the substrate 2 and the top plate 3, respectively, and a fan (not shown) is provided between these air intake ports 80 and 81. In this case, the fan's feathers are of a shape that is not twisted in either direction. Either one of the intake ports 80, 81 can be selectively closed by a cover 82. A ventilation opening 84 with such a warm air blower formed in the room wall 83
Attach this so that it is occluded. In this way, when it is hot such as in summer, by closing the indoor air intake port 81 with the cover 82 as shown in the imaginary line, outside air is taken in through the outdoor air intake port 80 and introduced indoors through the exhaust port 39. Therefore, it functions as a window fan, and in winter, if the outdoor air intake port 80 is closed with a cover 82 as shown by the solid line, it functions as a hot air fan in the same manner as in the first embodiment.

Still other variations include Figures 17 and 1.
It may be done as shown in Figure 8. This is related to the assembly structure of the casing 1, that is, the base plate 2 and the top plate 3. A connecting part 90 is formed on the inner peripheral edge of the base plate 2, and a connecting part 90 is formed on the top plate 3. A mounting portion 91 is formed. And these connecting parts 9
0 and the mounting portion 91 are fixed inside the casing 1 with screws 92. In this case, use the locking holes 51, 51 of the board 2 and the screw mounting holes 93, 93 provided below to tighten with a screwdriver D or the like as shown in the figure. Then, when the screws 92 are tightened, the screw mounting holes 93, 93 are closed by the abutting tool 94. In other words, the abutting tool 94 is formed of a plate material such as metal or synthetic resin into a substantially L-shape, and has a bottom at a position opposite to the screw mounting holes 93, 93 that fits into the screw mounting holes 93, 93. shaped protrusion 9
5.95 is formed. Therefore, the protrusion 95,
95 into the screw mounting holes 93, 93, and fixing the central part to the board 2 with the fixing screw 96, the protrusions 95, 95 of this abutting tool 94 will fit into the screw mounting holes 93, 93.
93, so it does not rotate and is fixed to the board 2 with the single fixing screw 96. Since the protrusions 95, 95 have bottomed shapes, the screw attachment holes 93, 93 are closed. In this way, the screws 92 are not exposed to the outside of the casing 1, resulting in an improved appearance. Furthermore, 97
is a support fitting attached to the crosspiece 99 of the chamber wall 98,
Hooks 53, 53 are provided protrudingly. Therefore, if the locking holes 51, 51 are locked with the hooks 53, 53, the locking holes 51, 51 are also invisible from the outside.

Furthermore, the modification shown in FIG. 19 can be used either on a wall or on the floor. That is, the hook 100 is attached to the wall 98, and the hook hole 101 formed in the board 3 is attached to the hook 100.
Attach. By abutting the abutting tools 102, 102 formed at the lower part of the substrate 3 against the wall 98, the air intake port 14 is not blocked by the wall 98. And legs 103 on the lower surface of the casing 1,
Since the cord 103 is provided protrudingly, when the cord 60 is hung on the wall as described above and is not in use, the cord 60 can be wrapped around the legs 103, 103.
does not get in the way. Further, when the legs 103, 103 are placed on the floor and used on the floor, the cords 60 can be wrapped around the abutting tools 102, 102 when not in use so that the cords do not get in the way.

The modifications shown in FIGS. 20a and 20b show modifications of the storage structure for the cord 60, in which the cord 60 uses a spiral cord that is shortened by its own elastic restoring force. In this way, you can use the code 60 when carrying it.
does not extend outward from the casing 1, so it does not get in the way. In addition, there is a rubber button 1 at the cord outlet.
10 is attached to prevent the cord 60 from being damaged, and a stopper 111 is attached to the base end of the cord 60 to prevent it from coming off.

Furthermore, in the modified example shown in FIGS. 21a and 21b, a roughly shaped groove 115 is formed in the substrate 2, and this groove
5 to store the roughly shaped support legs 116,
Both ends of the support leg 116 are rotatably supported on the substrate 2 via a support shaft 117. Therefore, when this hot air blower is not in use, the support legs 11
6 is rotated and stored in the concave groove 115 of the base plate 2, the support leg 116 does not get in the way, and when in use, by rotating and pulling it out, the casing 1 can be erected as shown in FIG. 21b. . In this case, it is possible to concentrate warm air on the feet and the like.

The modified example shown in FIG. 22 is designed so that when the support leg 120 is rotated upward, it can be used as a handle, making it convenient to carry. If the pivot point of the support leg 120 is made variable, not only can the inclination of the casing 1 when standing up be changed, but also the length of the upward protrusion from the casing 1 can be changed when used as a handle, making it easier to carry. At the same time, you can obtain a length that is easy to hold.

In the modification shown in FIG. 23, a warm air blower is placed on a support stand 131 rotatably attached to a leg stand 130, and an opening is formed in the support stand 131 facing the intake port. It has been done. In addition, support stand 1
The inclination angle of 31 can be adjusted with a threaded screw 132.

The modified example shown in FIGS. 24a and 24b is one in which two hot air blowers are connected at each end with hinges 140, 140, and both hot air blowers can be used at any angle, and when not in use. It doesn't take up much space when folded.

Furthermore, the present invention may be modified as shown in FIGS. 25a and 25b to 27. In other words, FIGS. 25a and 25b show the hot air blower of the present invention with a dressing table attached thereto, 150 is a mirror, and 151 is a cosmetics stand. Further, Fig. 26 shows a case in which a hot air blower is integrated into the trunk, and Fig. 27 shows a case in which a hot air blower is additionally built into the trunk.

According to the present invention, the gist of which is the structure described in the above claims, the heater and the fan motor are housed in the spiral chamber formed by the spiral plate built into the flat box-shaped casing. The fan motor itself does not require a fan case to guide the wind, and the wind can be guided by the spiral plate, which has the advantage of a simple structure.
Since the heater crosses the air passage from the fan heater to the exhaust port, it is possible to exchange heat with all the air sent to the exhaust port, and since the heater is located near the exhaust port, This has the effect of quickly blowing hot air out of the casing immediately after heat exchange. Furthermore, since the fan motor is formed from a motor having a motor shaft extending in the thickness direction of the casing and a fan connected to the motor shaft and disposed on the circumferential side of the motor, the axial length of the fan motor is You can shorten the length. In addition, since the heater installed in the spiral chamber is disposed on the circumferential side of the fan motor rather than on the axial extension of the fan motor, the heater does not become a factor that increases the thickness of the casing. Therefore, the casing, which is formed into a flat box shape by connecting the board and the top plate, can be made thinner and more compact, and the installation space can be reduced. Since it does not protrude, it does not get in the way, and it can be installed in toilets, under study desks, and other narrow places.It can also be configured as a portable type as needed, greatly expanding the scope of use and making it easy to use. There is.

[Brief explanation of the drawing]

1 to 11a and b show one embodiment of the present invention, in which FIG. 1 is a perspective view seen from the front side, FIG. The figures are a sectional view of the main parts along the line in Figure 1, Figure 4 is an exploded perspective view showing the installation structure of the intake port guard body, and Figure 5 is an exploded perspective view of the installation state taken along the line in Figure 4. sectional view, Figure 6 is an exploded perspective view showing the heater mounting structure, Figure 7 is a perspective view showing the wind direction switching plate, Figure 8 is an exploded perspective view showing the operation knob, and Figure 9 is the rear view. A perspective view of the casing seen from the side, FIG. 10 is a wiring circuit diagram, FIGS. 11a and 11b are diagrams each showing an example of use, and FIGS. Figure 12 is a partially cutaway perspective view of the inside, Figure 13
The figure is a perspective view of the casing seen from the back side, Figure 14 is a sectional view of the operating part of the wind direction switching plate, and Figure 15
The figure is a sectional view of the heater mounting structure, FIG. 16 is a side view showing a modification of the present invention, FIGS. 17 to 18 are still another modification, and FIG. 17 is a sectional view, and FIG. The figure is a perspective view of the back side, FIG. 19 is a perspective view of the back side showing another modification, and FIGS. FIGS. 21a and 21b are further modified examples; a is a perspective view of the rear side; FIG. 22 is a side view showing how it is used; FIG. The figure shows a side view of a modified example, FIGS. 24a and 24b are a perspective view of the modified example, a is a perspective view of the used state, b is an exploded perspective view of the main parts, and FIGS. 25 a and b are further modified examples of a is a front perspective view, b
26 and 27 are perspective views showing modified examples, respectively. 1...Casing, 2...Substrate, 3...Top plate,
11...Motor, 12...Fan, 14...Intake port, 27...Heater, 39...Exhaust port.

Claims (1)

[Claims] 1. A casing formed into a flat box shape by interconnecting a substrate and a top plate, and a spiral plate built into the casing so as to be sandwiched between the substrate and the top plate, and forming a spiral chamber. an exhaust port that communicates with the spiral chamber and is formed on the top plate of the casing; and an intake port that is separated from the exhaust port and communicates with the spiral chamber and is formed on the base plate or the top plate of the casing. , consisting of a motor having a motor shaft extending along the thickness direction of the casing, and a fan connected to the motor shaft and disposed on the circumferential side of the motor,
A fan motor is housed in the whirlpool chamber facing the intake port, and a fan motor is housed in the whirlpool chamber at a circumferential side of the fan motor and near the exhaust port. A hot air blower equipped with a heater that crosses an air passage leading to an exhaust port.