JP2953109B2 - Hot air blower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air blower having a humidifier.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional hot air blower of this type includes a blower 2, a wind tunnel 3, a hot air heater 4 inside a wind tunnel 3, and a hot air heater 4 inside a case 1. Wind outlet 5 and wind tunnel 3
A steam generator 8 composed of a pipe 7 having a heater 6 on its outer periphery, a tank 9 for supplying water to the steam generator 8, and a humidifier for discharging steam generated by the steam generator 8 into a room. And a heat shield plate 11 provided on the outer periphery of the heater 6.

In the above configuration, the air sent from the blower 2 passes through the wind tunnel 3, exchanges heat with the hot air heater 4, and is discharged from the hot air outlet 5 as hot air. Further, the water supplied from the tank 9 is heated by the heater 6 which is shielded from the case 1 by the heat shield plate 11 in the steam generator 8, passes through the pipe 7, becomes steam, and is discharged from the humidifying port 10. Humidification is performed.

[0004]

However, in such a configuration of the conventional hot air blower, the heat shield plate 11 is required to prevent the surface temperature of the case 1 from rising when the heater 6 of the steam generator 8 is heated. there were. Of course, in order to suppress the rise in the surface temperature of the case 1, the capacity of the heater 6 of the steam generator 8 may be reduced to about 40 W to lower the temperature of the heater 6 itself. If there is, a humidification amount of only about 40 cc / h can be obtained.

[0005] Generally, a hot air blower is used in a room of about 4.5 tatami mats. Therefore, in order to maintain comfort during heating, a room humidification amount of 50 cc / tatami is required, and a room of about 4.5 tatami mats requires a humidification amount of 230 to 250 cc / h. In order to obtain a humidification amount of about 250 cc / h, the capacity of the heater 6 needs to be about 250 W, and the temperature of the heater 6 naturally rises.

At this time, if the distance between the heater 6 and the case 1 is sufficiently long, the rise in the surface temperature of the case 1 will be small, but as described above, the warm air blower is used in a small room of about 4.5 tatami mats. Therefore, it is necessary to have a small size, and the distance between the heater 6 and the case 1 must be minimized. Therefore, a heat shield plate 11 is required to prevent the temperature of the case 1 from rising, and the configuration becomes complicated.

An object of the present invention is to solve the above-mentioned problem and to provide a small-sized warm air blower which can perform appropriate humidification with a simple structure without increasing the surface temperature of a case.

[0008]

In order to achieve the above object, a warm air blower according to the present invention comprises a fan driven by a motor in a main body case, an air path of the fan, and an air path in the air path.
The hot air heater provided and the air path on the leeward side of this hot air heater
An air outlet provided, a hollow pipe provided outside the air passage and provided with a heater on the outer periphery, a water supply tank communicating with a lower part of the hollow pipe, a humidifier provided above the hollow pipe, and a main body case. A suction port having a filter on the outer surface thereof, and a main body cable downstream of the suction air from the suction port.
An opening provided at a lower portion of the hollow
The pipe has a cylindrical shape, and a heater provided on the outer periphery of the hollow pipe is provided.
The fan and the opening are located below the fan,
The main body case facing the empty pipe is almost the same as the hollow pipe
Maintain a certain space and project a part of the front side on a concentric circle,
The opening is provided at a position facing the heater on the outer periphery of the hollow pipe.
Hot air sucked from the opening through the suction port
Air passes through the surface of the heater provided on the outer periphery of the hollow pipe.
The fan is drawn into the fan .

[0009]

According to the present invention, air is sucked in from the suction port by the rotation of the fan driven by the motor and flows through the opening provided at the lower portion of the main body case. The air passes through, is sucked by the fan, and pressurized, passes through the air passage , and is discharged from the outlet as warm air.The sucked air licks the surface of the hollow pipe while being sucked by the fan. Pass through. At this time, since the main body case around the hollow pipe is formed substantially concentrically with the hollow pipe so as to protrude only necessary portions from the main body case, the pressure loss around the hollow pipe is minimized, and the suction air is supplied to the hollow pipe. It flows smoothly around and produces the heat insulating effect of the heater on the outer periphery of the hollow pipe, and works to suppress the temperature rise on the surface of the main body case.

[0010]

1 and 2 show an embodiment of the present invention.
This will be described with reference to FIG. In the figure, 12
Denotes a main body case, in which a fan 14 fixed to a motor 13 is located. Fan 1
The hot air heater 16 shown in FIGS. 2 and 3 is fixed to the air path 15 of FIG.
7 are provided. An opening 18 shown in FIGS. 2 and 3 is provided at a lower portion of the rear surface of the main body case 12, and a dustproof filter 19 and a suction port 20 are located outside the opening 18.

Inside the main body case 12, a hollow pipe 22 having a heater 21 wound around the lower part is located between the side surface of the main body case 12 and the side surface of the air passage 15.
The main body case 12 on the side of the hollow pipe 22 is
The hollow pipe 22 is connected to a water receiver 24 shown in FIG. The water receiver 24 is located at the back of the main body case 12, and the water receiver 24 is provided with a water supply tank 25 at an upper portion of the main body case 12 so as to be detachable from the main body case 12 so as not to block the opening 18. A humidifying port 27 having a spout 26 shown in FIG. 2 is provided on the upper part of the hollow pipe 22 so as to protrude from the upper surface of the main body case 12. The above hollow pipe
The heater and the opening 18 provided on the outer periphery of the fan 22
It is located below.

Next, the operation of the above configuration will be described.
When the fan 14 is rotated by the motor 13, air is drawn from the outside of the main body case 12 into the suction port 20 and the filter 19.
And is sucked through the opening 18 . The sucked air is drawn into the hollow pipe 22 while being sucked by the fan 14.
The air passes through the heater 21 provided on the outer circumference while licking, is sucked and pressurized by the fan 14, passes through the air passage 15, undergoes heat exchange by the hot air heater 16, and receives hot air from the outlet 17. Is released as Water tank 2
5 is supplied to the hollow pipe 22 through the connecting pipe 23 while maintaining a constant water level in the water receiver 24,
The water is heated by the heater 21 while maintaining the same water level as the water receiver 24, becomes steam, passes through the hollow pipe 22, and is humidified.
The air is discharged from the jet port 26 to humidify the room.

As described above, according to the warm air blower of the embodiment of the present invention, since the main body case 12 on the side of the hollow pipe 22 is formed substantially concentrically with the hollow pipe 22, the hollow pipe 22 and the main body case 12 The pressure loss during
The sucked air smoothly flows around the hollow pipe 22, prevents the heat of the heater 21 from being transmitted to the main body case 12, and suppresses the temperature rise of the main body case 12. Also opening 18 for suction which is provided at the lower portion of the main body casing 12 is fan 1
Since the heater 21 provided in the hollow pipe 22 is located at a position lower than that of the heater 4 and substantially at the opposite position , the suction air easily passes around the heater 21, thereby producing a more heat insulating effect. .

Further, since the sucked air removes the heat of the heater 21, the combined heat amount of the warm air heater 16 and the heat amount of the heater 21 is released from the outlet 17, thereby improving the heating effect. Further, since only a necessary outer peripheral portion of the hollow pipe 22 is concentrically protruded in a part of the main body case 12, the entire structure can be reduced in size without increasing the size and the humidifying port
Is formed to be more convex than the main body case 12, and only the hollow pipe 22 of the main body case 12 is formed so as to protrude.
The overhanging portion also has a visual effect that the humidifying portion can be seen at a glance from the appearance.

[0015]

As is clear from the above embodiments, the present invention has the following effects according to the hot air blower. (1) Main body case facing the heater on the outer periphery of the hollow pipe
Is almost concentric with the hollow pipe while maintaining a nearly constant space.
The air that is drawn in is a pressure loss
Flows smoothly around the heater around the hollow pipe,
To prevent the heat of the
Suppress temperature rise. Furthermore, the body case partially extends
The overhang is noticeable due to the curved shape, increasing the visual effect
And an effect that the size can be reduced. (2) The heater and the opening provided on the outer periphery of the hollow pipe are
And the opening is the outer periphery of the hollow pipe
Because it is located opposite to the heater of
After passing through the outer periphery of the hollow pipe immediately after being sucked
It is easy to cool around the heater around the hollow pipe
You. Therefore, a heat shield plate is unnecessary and the main body case has a simple configuration.
Small and high humidification
A hot air blower that generates an amount becomes possible. (3) In addition, the suction air is supplied to the heater when passing through the hollow pipe.
To remove heat, the heat of the hot air heater is
The amount of heat is added, and the amount of warm air heating increases.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of a warm air blower according to one embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the hot air blower.

FIG. 3 is a front sectional view of the same hot air blower.

FIG. 4 is a longitudinal sectional view of a conventional hot air blower.

[Explanation of symbols]

 12 body case 13 motor 14 fan 15 air path 16 hot air heater 17 outlet 19 filter 20 suction port 21 heater 22 hollow pipe 25 water supply tank 27 humidifying port

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hiroaki Fujii 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-4-103935 (JP, A) 89259 (JP, U) Japanese Utility Model Showa 50-37953 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F24H 9/02 302

Claims (1)

(57) [Claims] A fan driven by a motor to 1. A body casing, and the air path of the fan, and the warm air heater provided in the air path, blown provided on the leeward side air passage of the warm air heater An outlet, a hollow pipe provided outside the air passage and provided with a heater on the outer periphery, a water supply tank communicating with a lower portion of the hollow pipe,
A humidifying port provided above the hollow pipe, a suction opening having a filter on the outer surface portion of said body case, said Sucking
At the bottom of the case at the downstream side of the intake air
The hollow pipe is cylindrical.
And a heater provided on the outer periphery of the hollow pipe and the opening
The part is located below the fan and is paired with the hollow pipe.
The main body case facing the hollow pipe keeps almost constant space.
Part of the front side overhangs the concentric circle, the opening is
Provided at a position facing the heater on the outer periphery of the hollow pipe,
The air for warm air sucked from the opening through the
Through the heater surface provided on the outer periphery of the fan
Yutakakazeki sucked.