JPS5933373B2 - dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dryer that integrates a fan and a heating element to improve air blowing efficiency and is made smaller.

Conventional dryers have a motor fixed in a housing that has an intake and exhaust port, a rotating fan fixed to the drive shaft of the motor, and a heating element placed between the fan and the exhaust port to drive the air to the exhaust port. It was blowing out hot air.

In a dryer with such a configuration, since a heating element is provided between the fan and the exhaust port, the heating element blocks the flow of air, resulting in poor air blowing efficiency, and furthermore, the space occupied by the heating element in the housing is reduced. There was a drawback that the dryer was large in size.

The present invention was made in view of the drawbacks of the conventional example, and
The purpose of this is to integrate the fan and the heating element to eliminate the obstruction between the exhaust port and the fan, improving air blowing efficiency, and - to reduce the space occupied by the heating element inside the housing, making it more compact. Our goal is to provide you with a dryer.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

1 is a two-part housing having an intake port 1a and an exhaust port 1b, 2 is a motor fixed to one side of the housing 1, and 3 is a pair of ring plates 3b.

A plurality of heat generating blade pieces 3a are provided between the ring plates 3b,
It is a so-called sirocco fan equipped with a boss 8c for fixing to the motor drive shaft on one side, and the heating blade piece 3a□ is a positive temperature-resistance fan made of plastic mixed with carbon black, metal powder, etc. as shown in Figure 6. A heating element having a characteristic, a so-called positive characteristic resistance heating element, is used so that the blade itself generates heat, and the ring plate 3b is formed of a metal plate with good conductivity, and the locking piece 3d with the heating element is formed. A sliding electrode plate 3d provided with ' is fixed with screws.

4 has one end connected to the power supply lead wire 5, and the other end has elasticity in the direction perpendicular to the contact surface with the sliding electrode plate 3d, and uses this elasticity to contact the sliding electrode plate 3d and electrically A fixed electrode made of a metal plate with good conductivity for connection, and is fixed to the housing 1.

6 is a motor power supply lead wire, 7 is a switch, and 8 is a power cord.

If a positive characteristic resistance heating element is used, even if the air blowing stops due to a failure of the motor or the like, the current will be cut off due to an increase in the electrical resistance of the heating element, and an abnormal temperature rise in the heating element can be prevented.

In the above embodiment, the fan blade 3a itself generates heat, but as shown in FIG. As shown in Fig. 8, the blade may generate heat by wrapping a resistance wire 3f around it.

Furthermore, in the above embodiment, the sliding electrode plate 3d is interposed to supply power from the fixed electrode element 4 to the heat generating blade piece 3a, but power can be supplied by bringing the fixed electrode element 4 into direct contact with the electrode portion of the heat generating blade piece 3a. You can.

In the dryer configured as described above, the fan 3 is rotated by the motor 2 to blow air to the exhaust port 1b, and power is supplied via the electrode 4 to the heat-generating blades 3a provided on the fan 3 to cause the fan itself to generate heat. Hot air is sent out to the exhaust port.

By integrating the fan and the heating element with the above-described configuration, the present invention eliminates the shield between the dryer exhaust port and the fan, especially the insulating plate wrapped around the heater, and improves the air blowing efficiency. Since the space occupied by the heating element in the housing can be used as is for the fan, there is no need for a space for the heating element alone as in the conventional case, and there is an effect that the dryer can be made smaller.

[Brief explanation of the drawing]

Fig. 1 is an exploded front view showing one embodiment of the present invention, Fig. 2 is a vertical sectional view, Fig. 3 is a perspective view of the fan, Fig. 4 is a detailed view of section A in Fig. 2, and Fig. 5 is a FIG. 4 is a top view of section B, FIG. 6 is an enlarged view of section C in FIG. 3, and FIGS. 7 and 8 are views of different embodiments of the heat generating blade. DESCRIPTION OF SYMBOLS 1...Housing, 1a...Intake port, 1b...Exhaust port, 2...Motor, 3...Fan, 3a...Heating blade piece, 4...Fixed electrode element.

Claims (1)

[Claims] 1 A fan having a heat generating part in its blades is arranged in a housing having an intake and exhaust port so as to be rotated by a motor, and -
A dryer characterized in that the fan itself generates heat by supplying power to the heat generating part using an electrode element fixed to the housing.