JPS6130125Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a hot air device for heating or drying.

(Conventional technology) Conventionally, hot air devices for heating or drying include:
For example, an air outlet is provided at the front of the wind tunnel in the main body, a blower is provided at the rear of the wind tunnel, and a plate-shaped heater is located between the air outlet and the air blower in the wind tunnel with respect to the ventilation direction. It is known that the air blowers are arranged in parallel with each other, the air from the air blower is heated by a plate-shaped heater, and the hot air is blown out from the air outlet.

However, with this structure, the plate heater is installed parallel to the ventilation direction, so the heating efficiency for the wind is poor, and in order to obtain sufficient hot air, the capacity of the plate heater must be increased. It has to be bigger.

Furthermore, as shown in Japanese Utility Model Publication No. 53-36611, a heater in which a plurality of heating wires are stretched inside a frame is used, and the heating wires are arranged perpendicular to the ventilation direction. something is known.

In this way, the heating efficiency against wind can be improved, but since the heater requires a frame, the heater becomes relatively large, and the entire appliance also becomes large.

Therefore, as a heater, a ventilation hole is formed in a plate body, and a heating wire is wound around the plate body facing the ventilation hole, and this plate-shaped heater is arranged perpendicular to the ventilation direction. It is possible that

In this way, the heating efficiency against wind can be improved, and the plate-shaped heater becomes thinner, so it can be made smaller. Since the partition pieces for forming the ventilation holes are perpendicular to the airflow, there is a problem that the air hits the partition pieces, reducing airflow efficiency and increasing noise.

(Problems to be Solved by the Invention) As described above, in those using plate heaters, there are problems with heating efficiency, air blowing efficiency, and noise.

The present invention is intended to solve the above-mentioned problems, and aims to reduce noise without impairing heating efficiency and air blowing efficiency.

[Structure of the idea]

(Means for solving the problem) The present invention provides an air outlet at the front of the wind tunnel in the main body, and a blower at the rear of the wind tunnel, and
In the hot air device in which a plate-shaped heater is provided between the air outlet and the blower in the wind tunnel, the plate-shaped heater has a ventilation opening formed in a heat-resistant insulating plate, and a ventilation opening formed in the heat-resistant insulating plate. The plate-shaped heater is arranged so as to be inclined with respect to the ventilation direction.

(Function) In the present invention, the air from the blower is brought into contact with the heating wire in the direction crossing the ventilation direction through the ventilation port of the plate-shaped heater, and is blown out from the air outlet as warm air. During this air blowing, the air flows into the plate-shaped heater section.
The air flows through the ventilation holes of the inclined heat-resistant insulating plate and flows along the surface of the heat-resistant insulating plate at the edges.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 1, 1 is a main body, and this main body 1 is
An upper case 3 is fixed onto a plate-shaped lower case 2 with screws 4.

Rectifying plates 5 and 6 are attached to the upper and lower parts of the front part of the main body 1, and a wind tunnel 7 is formed by the upper and lower rectifying plates 5 and 6. An air outlet 10 is formed in the front plate 8, a looper 11 having a large number of air conditioning blades 9 is provided at the air outlet 10, and a blower 13 consisting of a fan and a motor is installed at the rear of the wind tunnel 7.
is provided. Furthermore, the upper rectifying plate 6
A guide piece 14 is bent upward at the rear end, and a thermostat 15 for sensing the temperature inside the wind tunnel 7 is fixed on the upper rectifier plate 6. Further, substantially U-shaped legs 17 are fixed to the lower part of the lower case 2 via fasteners 16.

Front and rear plate-shaped heaters 18 and 19 are arranged in the wind tunnel 7 between the outlet 10 and the blower 13 so as to be inclined with respect to the ventilation direction. As shown in FIG. 2, each of the plate heaters 18 and 19 has a horizontally long rectangular heat-resistant insulating plate 20, and this heat-resistant insulating plate 20 has a plurality of rectangular ventilation holes through a plurality of partition frames 21. In addition to forming the opening 22, a large number of mountain-shaped locking portions 23 are continuously formed on the upper and lower edges of the heat-resistant insulating board 20, and between the upper and lower locking portions 23, the front and rear of each ventilation hole 22 are formed. A heating wire 24 is wound so as to face the surface. The front and rear plate-shaped heaters 18 and 19 are inclined at an angle of approximately 30° to 60° in the same direction with respect to the upper and lower rectifying plates 5 and 6 in the wind tunnel 7. Heater 19
The thermostat 15 is fixed at an upper position corresponding to one of the upwardly inclined surfaces, that is, the rear surface in the illustrated embodiment.

Further, as shown in FIG. 3, the motor 12 of the blower 13 and the two plate heaters 18 and 19 are connected to the power plug 25 via the thermostat 15 and switch 26, and the switch 26
A first contact plate 27 that contacts and separates from the contact 28 on the motor 12 and the rear plate-shaped heater 19 side, and a second contact plate 27 that contacts and separates from the contact 30 on the front plate-shaped heater 18 side.
It has a contact plate 29.

When using such a configuration,
The power plug 25 is connected to a power source, and the first contact plate 27 of the switch 26 is connected to a contact point.
As a result, the motor 12 of the blower 31 is driven to rotate the fan, and the heating wire 24 of the rear plate-shaped heater 19 is energized. Then, external air is sucked into the main body 1 from an intake port (not shown) by a fan and blown into the wind tunnel 7. The air passes through the non-energized plate-shaped heater 18 at the front, and is air-conditioned by each air-conditioning blade 9 of the looper 11 from the outlet 10 and sucked out. In this case, since the front and rear plate heaters 18 and 19 are arranged in the wind tunnel 7 in an inclined manner, the wind generated by the fan is transferred to the front and rear plate heaters 18 and 1.
The air passes through each of the ventilation ports 22 of 9, contacts the heating wire 24 that intersects the ventilation direction of the energized rear plate-shaped heater 19, is uniformly heated, and is sent out as hot air. In addition, the air flows through each ventilation hole 22 of the inclined heat-resistant insulating plate 20 in the plate-shaped heaters 18 and 19.
At the same time, the air flows along the surface of the heat-resistant insulating board 20 at the edges and the partition frame 21, so that the air is blown smoothly and there is little noise.

Next, when the second contact plate 29 of the switch 26 is connected to the contact 30, the heating wire 24 of the front plate-shaped heater 18 is also energized, so that it is heated by the rear plate-shaped heater 19. The heated air is further heated by the heating wire 24 of the plate-shaped heater 18 at the front, and is blown out from the air outlet 10 as high-temperature warm air.

In addition, the thermostat 15 attached to the upper rectifying plate 6 is connected to one inclined surface of the plate-shaped heater 19 at the rear.
In other words, it is located relative to the upper part of the rear surface, so
The temperature of the entire rear surface is properly sensed by the thermostat 15, and for example,
In the event of an abnormality in which the air blowing stops due to the locking of the motor 12, etc., the heater immediately receives the heat from the plate heater 19 at the rear and operates quickly, and the motor 12 and the plate heater 1
Immediately stop the power supply to 8 and 19.

In addition, in the illustrated embodiment, the front and rear plate heaters 1
Although the case where heaters 8 and 19 are tilted toward one side in the same direction has been described, the arrangement is not limited to this, and the heaters 8 and 19 may be tilted toward the other side in the same direction. They may be arranged so as to be inclined in different directions.

[Effect of idea]

According to the present invention, by arranging the plate-shaped heater at an angle in the wind tunnel, the air from the blower passes through the ventilation hole of the plate-shaped heater and comes into contact with the heating wire in the direction that crosses the ventilation direction, resulting in uniform heating. At the same time, the air is blown out as hot air from the outlet, and when this air is blown, the air passes through the ventilation opening of the inclined heat-resistant insulating plate in the plate-shaped heater part, and also flows along the plate surface of the heat-resistant insulating plate at the edge. The air flows smoothly, and therefore noise can be reduced without impairing heating efficiency and air blowing efficiency compared to a case where the plate-shaped heater is disposed perpendicular to the airflow direction.

In addition, by providing the plate heater at an angle, the width of the heat-resistant insulating plate of the plate heater can be increased to increase the contact surface with the wind, thereby improving heat exchange performance.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view of a hot air device, Fig. 2 is a front view of the same plate-shaped heater, and Fig. 3 is a circuit diagram. 1... Main body, 7... Wind tunnel, 10... Air outlet, 1
3...Blower, 18, 19...Plate heater, 20
...Heat-resistant insulating board, 22...Ventilating hole, 24...Heating wire.

Claims (1)

[Claims for Utility Model Registration] An air outlet is provided at the front of the wind tunnel in the main body, a blower is provided at the rear of the wind tunnel, and a plate-shaped heater is provided in the wind tunnel between the air outlet and the blower. In the hot air device, the plate-shaped heater is formed by forming a ventilation hole in a heat-resistant insulating plate, and wrapping a heating wire around the heat-resistant insulating plate so as to face the ventilation hole, and A hot air device characterized in that a heater is arranged at an angle with respect to the ventilation direction.