JPH049196A - Dehumidifying clothes dryer - Google Patents

Abstract

PURPOSE:To reduce noises of air and prevent breakage of a belt for driving a double impeller fan, by providing suction holes for cooling air on the sound- insulating plate provided at the backside plate of a fan case and forming a bend bent to the opposite direction to the suction direction, in the endface of the suction air holes. CONSTITUTION:This dryer comprises a rotary drum 2 arranged in an external frame 1, a rear plate 3 covering the rear part of the external frame 1, a double impeller fan 4 generating circulating air and cooling air and also heat- exchanging the circulating air and the cooling air, and a fan case 9 containing the double impeller fan 4 so as to separate the circulating air from the cooling air. A sound-insulating plate 17 having the suction air holes 17a for the cooling air in the rear plate 3 side of the fan case 9 and a bend 17b bent to the opposite direction to the suction air direction is formed at the endface of the suction air holes 17a. And a belt 15 driving the double impeller fan 4 is drawn from the suction air holes 17a. As a result, the air noises can be reduced and the damage and breakage of the driving belt of the double impeller fan can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a dehumidifying clothes dryer for use in general households.

2. Description of the Related Art A conventional dehumidifying clothes dryer has a structure shown in FIGS. 3 to 4.

In FIG. 4, reference numeral 1 denotes an outer frame, and a rotary drum 2 is rotatably disposed within this outer frame 1. 3 is a back plate that covers the rear of the outer frame 1. 4 is circulating air 5 and cooling air 6 on both sides of the blade.
It is a double-blade fan that generates heat exchange between circulating air 5 and cooling air 6 through its blades. Reference numeral 7 denotes a partition portion that partitions the circulating air 6 and the cooling air 6; 8a represents a vortex chamber portion for the circulating air 5; and 8b represents a vortex chamber portion for the cooling air 6.
A and 8b constitute a chiffon case 9.

10 is a circulation duct, 11 is a drain port, 12 is a heater serving as a heat source, and 13 is a motor.

In the above configuration, when the motor 13 rotates and the rotating drum 2 and double-winged fan 4 rotate through the belts 15 and 16, circulating air 6 and cooling air 6 are generated, and the circulating air 6 passes through the circulating duct 10, The hot air reaches the heater 12, is introduced into the rotating drum 2, exchanges heat with the clothes, and then returns to the double-winged fan 4, repeating the cycle. Furthermore, the circulating air 5 and the cooling air 6, which have become hot and humid, are heat exchanged by the blades of the double-wing fan 4, the circulating air 5 is heat exchanged, the circulating air 5 is cooled, and the condensed water is discharged from the drain port 11. The water will be drained outside the aircraft.

Further, a sound insulating plate 14 having a plurality of intake holes 14a is provided on the side of the cooling air swirl chamber 8a of the fan case 9.

Further, a belt 15 for driving the double-winged fan 4 was pulled out from the intake hole 14a and was hung around the boot IJ 13a of the motor 13. Further, the intake hole 14a was simply a hole.

Problems to be Solved by the Invention In such a conventional configuration, there is a problem in that when the double-blade fan 4 rotates, the cooling air 6 is cut at the end face of the intake hole 14a, which increases wind noise during operation. Ta. Further, the belt 15 that drives the double-blade fan 4 oscillates due to the rotational vibration of the double-blade fan 4, comes into contact with the intake hole 14a, and is damaged and broken.

In view of the above problems, it is an object of the present invention to reduce wind noise and prevent damage and breakage of a belt for driving a double-blade fan.

Means for Solving the Problems In order to achieve the above object, the present invention provides a cooling air intake hole in a sound insulating plate provided on the back plate side of a fan case, and the end surface of this intake hole is bent in the opposite direction to the intake direction. 9 bent portions are formed.

Function: With this configuration, the bent portion at the end of the intake hole of the sound insulating plate acts as a guide for the flow of air, so the wind is not cut off and noise can be reduced. Furthermore, even if the belt that drives the double-blade fan vibrates, the ends of the folded portions do not come into contact with the belt, thereby preventing damage to the belt.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2. Note that parts that are the same as those in the conventional configuration are given the same numbers, and their explanations will be omitted, and only the features of the present invention will be explained below.

The sound insulating plate 1, which is a feature of the present invention, is disposed between the rear side of the fan case 9 and the back plate 3, and has one intake hole 17a in the plurality of holes 5. and the intake hole 1
The end face of 7a forms a bent portion 17b which is bent in a direction opposite to the intake direction of the cooling air 6 of the double-blade fan 4.

Further, the driving belt 15 of both wings 77 and 4 is connected to the intake hole 1.
It is pulled out from one place of 7a and hooked to the pulley of the motor 13.

According to the above configuration, since the protruding portion of the bent portion 17b serves as a guide for the cooling air 6, the cooling air flows smoothly into the swirl chamber 8b.
wind noise can be reduced. Also,
Since the tip of the bent portion 17b does not come into contact with the belt 15 for driving the double-blade fan 4, the belt 15 can be prevented from being damaged or broken.

Effects of the Invention As described above, according to the present invention, by providing a bent portion bent in the opposite direction to the intake direction on the intake end face of the sound insulating plate, it is possible to prevent wind from cutting the end face of the intake hole, thereby reducing noise. decreases significantly. Furthermore, even if the belt that drives the double-blade fan swings due to rotational vibration of the double-blade fan, the intake air is bent and bent, and the belt can be prevented from being damaged without contacting the end face.

[Brief explanation of the drawing]

Fig. 1 is an external perspective view of a dehumidifying clothes dryer according to the present invention with the back plate removed, Fig. 2 is a vertical sectional view of the same dehumidifying clothes dryer, and Fig. 3 is a conventional dehumidifying clothes dryer. FIG. 4 is a vertical sectional view of the dehumidifying clothes dryer. 1...outer frame, 2...rotating drum, 3...
...Back plate, 4...Both wing fans, 5...
...Circulating air, 6...Cooling air, 9...Fan case, 17...Sound insulation board, 17a...
...Intake hole, 17b...Bend part.

Claims (1)

[Claims] A rotating drum disposed within an outer frame, a back plate covering the rear of the outer frame, a double-winged fan that generates circulating air and cooling air, and exchanging heat between the circulating air and cooling air, and the circulating air and cooling air. A sound insulating plate having a cooling air intake hole is provided on the back plate side of the fan case, and a sound insulating plate having a cooling air intake hole is provided on the end surface of the intake hole, and a sound insulating plate is provided on the back plate side of the fan case, and the end surface of the intake hole is bent in a direction opposite to the intake direction. A dehumidifying clothes dryer in which a belt that is bent and drives the double-blade fan is pulled out from the intake hole.