JPS58177693A - Electric dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric dryer in which a drum is rotatably arranged inside a box, and particularly relates to an improvement in the bearing structure of a fan that pumps drying air to pass through the drum. When the fan rotates, the oil that scatters from the bearing part is
This prevents leakage to the pulley side, and in particular prevents the belt from slipping on the pulley (9).

An embodiment of the present invention will be described below with reference to the accompanying drawings. In the figure, 1 is a box constituting the outer case of the dryer, and is composed of a side wall 1' and a front &2 provided on the front side thereof. It is a drum placed inside a box body 1, and the rear part of the body plate 5, which is partially provided with baffle plates 4, is shaped like a disk and has many small holes 6 for air circulation in the center. A circular base plate 8 has a bearing 7 fixed to its center, and the front part of the body plate 6 is sandwiched between a circular plate 1o having a circular opening with a flange 9 in the center, and the outer periphery of the circular base plate 8 and the circular plate 10 is The drum 3 is constructed by fixing the body plate 5 by caulking or the like at the section.
A support plate 11 is provided on the rear surface of the box body 1 so as to connect the diagonal corners of the box body.
A bearing 7 fixed at the center of a circular substrate 8 is pivotally supported on a fixed shaft 12 near the center of the circular substrate 8.

Further, a bearing material 14 having good wear resistance and a small coefficient of friction is attached and fixed to the inner surface of the flange portion 9 of the disc 10 at the front of the drum 3 so as to be able to slide. A front support plate 15 having a slidable outer diameter is pivotally supported on the inner diameter of this bearing material 14 . The front support plate 16 is attached to the front plate 2 via a block 16 and a heater plate 18 that supports a heater 17 inside the block 16, and the drum 3 is rotatably supported within the box body 1. ing. A shaft 21 of a motor 2o is fixed to a motor support plate 19 fixedly supported on the bottom surface of the body 1'.
The drum 3 is rotationally driven by a belt 24 that is wound around a drum pulley 22 fixed to one side of the drum pulley 22 and the outer periphery of the body plate 5 via a tension pulley 23.

26 is a fan, which is fixed to the central boss portion of the impeller 3o through a bearing 29 fixed to a bearing plate 28 of the fan case 26 in a casing composed of a fan case 26 and a fan case 27. An impeller 30 is rotatably supported via a fan shaft 31. A motor pulley 33 is fixed to the other end of the fan shaft 31 and is fixed to the other end of the shaft of the motor 2o.
The impeller 3o is connected to the fan belt 34 wrapped between the
It is driven by 111 rotations.

The box body 1 has a longitudinal direction in the lateral direction, and the drum 3 is placed so as to be offset to the right V when viewed from the front of the front plate 2.

At the other upper and lower corners of the box body 1, a motor 20 is provided below and a fan 26 is provided above. Further, the outlet portion 35 of the fan case 26 and 27 of the fan 25 is provided so as to protrude from the hole in the top surface of the box body 1. The discharge port 36 is provided with a chevron-shaped outer circumference, and a narrow rib 36 is integrally molded on the top surface of the discharge port 35 to prevent foreign matter from falling into the interior of the discharge port 36 or accidentally. This serves to prevent fingers or the like from getting in and touching the impeller 30.

There is an integrally molded pin 37 on the inner surface of the fan case 26 near the discharge port 36, and a felt 38y is attached to the bottle 37.
K is inserted and fixed. This felt 38 is the impeller 30
The back surface of the disk portion 39 is hidden from view when viewed from the top surface of the discharge port portion 36.

This is because when the lubricating oil in the oil-impregnated felt 40 provided inside the bearing 29 leaks out and is scattered by the centrifugal force along the back surface of the disc part 39 due to the rotation of the impeller 30, the 36 to prevent it from flying out to the outside. Also, by melting and crushing the head of the felt pin 37, it is possible to prevent it from falling off.Fan 25
A stepped cylinder 41 for attaching an exhaust port duct or the like is fitted into the discharge port $35 by the claw portion 411L engaging with the ignition 36a protruding from the outer peripheral surface of the discharge port portion 36. It is something that exists.

The bearing 29 of the fan 26 is mounted on metal 4 at both ends of the case 420.
3 and metal 44 are provided, and an oil-impregnated fel) 40 is provided between them.
t-provided, impeller 30 and pulley 3 with metal 43t44
2 is fixed to both ends of the fan shaft 31, and the fan case 26 is supported by the brim 46 at the center of the case 42.
and is fixed via a bearing plate 28. At the same time case 4
A cylindrical body 46 surrounding the outer periphery of the body on the pulley 32 side of No. 2 is fixed. An oil-impregnated felt 47 is provided in the space between the cylindrical body 46 and the body of the case 42, and is interconnected with the oil-impregnated felt 40 in the body by a communicating felt 49 inserted into a small hole 48 provided in the center of the case 42. It looks like it will. Further, one end of the cylinder 46 has a flange 6o on the inside, and the opening part of the flange 50 is connected to the pulley 320 of the case 42.
It protrudes toward the pulley 32 from the joint surface between the metal 43 of 11I and the thrust surface of the pulley 32, and the oil-impregnated felt 47 inside the cylinder body 46 prevents oil splashing from the joint surface.
plays a role in absorbing

The front plate 2 has a square input port 52 that fits into a square window 61 provided at the center of the front support plate 16.
2 is joined with a backing 53 so as to be almost airtight.

The front plate 2 is fully equipped with a lid 55 that is supported by a hinge 64 to open and close. 57 to make the inside of the drum 3 airtight. The hollow portion 67 of the backing 63 forms the frame of the input port 62, and has a shape with a slight bulge 58 toward the inside of the input port 52, as shown in FIG. By molding t1f to be thicker than the outside wall thickness t2 of the hollow portion, it has the effect of preventing deformation of the shape of the hollow portion that occurs when the backing 53 is placed along the corner of the rectangular input port 52.

There is an air intake port 59'j next to the above-mentioned input port 52 provided on the front plate 2.
A filter 61 is removably fitted to a cover 60 that covers the intake port 59, and a filter e1 is provided.
The filter cover 62 is attached to the cover 60 via a hinge so that the filter cover 62 can be opened and closed freely. On the rear surface of the intake port 69, there are a heater plate 18 held between the front support plate 15 and a heater 17 fixed to the heater plate 18, and a small porous hole on the front support plate 15 at a position opposite to the heater 17. A hole 63 is provided so that the outside air and the inside of the drum 3 communicate with each other via the heater 17. In addition, the small hole 6 near the center of the circular base plate 8 of the drum 3
Filter 64 and filter cover 66 to cover
is fitted into a cylindrical fitting portion 66 integrally molded on the bearing 7. Therefore, the filter 64 filters the dust generated from the clothes in the drum 3 and serves to prevent it from being released to the outside, and the filter cover 65 prevents the filter 64 from being rubbed by the clothes and being damaged. are doing.

At a position opposite to the small hole 6 of the support plate 110 circular substrate 8,
An air circulation hole 67 is open, and a circular seat 68 is entirely formed around the air circulation hole 67 of the support plate 11, and a sliding backing 69 is integrally fixed thereto. This sliding backing 69 is made of a material with excellent flexibility and wear resistance, and one end thereof is in contact with a circular seat containing a small hole 6 in the center of the circular substrate 8.

Further, on the support plate 8, a box-shaped guide path A0 is formed in one direction from a circular seat 68 including an air circulation hole 67, and an air guide path sealed by a patch plate 71 that closes the guide path 70 is formed. It is something that forms. The end of the guide path 70 is connected to the inter-cylindrical lower 2
and the suction lower 3 provided in the fan case 27 described above,
The backing 74 provides airtight communication.

The heated air that enters the heater 17 from the filter cover 62 through the filter 61 through the air intake port 69 is sucked into the drum 3 through the small hole 63 of the front support plate 15, and the clothes inside the drum 3 are absorbed. Water vapor generated from the clothes passes through the filter cover 66 and filter 64 on the rear surface of the drum 3, and then through the small hole 6 and the conduit 7 of the support plate 11.
0 into the fan 25, and is then discharged from the discharge port 35 to the outside of the machine.
Drying is performed.

The lid 65 is provided with a circular portion 76 that is approximately concentric with the center of rotation of the hinge 54 provided near the hinge 64 that opens and closes the lid, and a lip 78 in a notch 77, and a spring 79 that abuts against the surface of the lip 78. is fixed to the front plate 2, so that when the lid 55 is closed, it abuts against the lip 78 and the circular part 76, and when it is opened, it abuts against the notch 77, so that when the lid 55 is opened,
The pushing force of the spring 79 that comes into contact with the notch 77 serves as a stopper. This makes it possible to hold the lid 66 in an open state, making it easy to take clothes in and out of the drum 3 even if the lid 56 is not pressed by hand.

Further, since the heater 17 is provided on the left side of the drum 3 when viewed from the front, the rotation direction of the drum 3 is clockwise. This has the effect that the clothes under the drum 3 rotate and move in the direction of the heater 17 on the left side as it rotates, are hit by the hot air blown out from the small hole 63 facing the heater 17, and are further lifted upward and fall. When this fall occurs, the air sucked out from the filter cover 65 at the rear of the drum 3 is further heated. Therefore, the heating efficiency is much better than when the drum 3 rotates counterclockwise.

As is clear from the above embodiments, according to the present invention, a bearing is provided which supports the fan for blowing drying air, and a cylindrical body is provided to surround the outer periphery of the body on the pulley side of the bearing case. , one end of this cylinder is attached to the fan case, and the other end is provided with an inwardly bent flange,
By positioning the opening of this flange to protrude toward the pulley side from the joint surface between the metal placed inside the case and the thrust surface of the rotating pulley, the 1+21 rotation of the fan allows the metal part to Even if the leaked oil were to scatter from the joint surface, the oil would scatter inside the opening at the other end of the cylinder and would not come out to the pulley, leaving the oil near the pulley. There is no risk of oil adhering to the pulley, and there is also no risk of the belt slipping due to oil adhering to the pulley, making the air blowing function extremely stable.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of an electric dryer showing an embodiment of the present invention, Fig. 2 is a longitudinal sectional view thereof, Fig. 3 is a rear view showing the internal structure, and Fig. 4 is a cross-sectional view showing the entire fan. Figure 6 is a cross-sectional perspective view showing a part of the discharge port of the fan, Figure 6 is a cross-sectional view of the bearing part of the fan, Figure 7 is a cross-sectional view of the hinge of the lid, and Figure 8 is a cross-sectional view of the fan's bearing part.
The figure is a cross-sectional perspective view of the backing of the input port, and FIG. 9 is a front view of the internal structure seen from the front. 1...Box body, 2...Front plate, 3...
...Drum, 8...Circular board, 25...
・Fan, 29...Bearing, 32...7
”-IJ-142...Case, 43...Metal, 46...Cylinder, 50...Flange. Name of agent: Patent attorney Toshio Nakao and others 1 person 1st
Figure 2 Figure 4 Figure 6 Figure 5

Claims (1)

[Claims] A circular conduction path is provided at the rear of the drum rotatably supported within the box body, and the said path is connected to the suction port of the fan. A metal body is provided so as to surround the cylinder body, one end of the cylinder body is fixed to the entire fan case, and the other end thereof is bent inward and provided with a hole flange, and the opening of the flange is arranged inside the case; An electric dryer that is located protruding toward the pulley side beyond the joint surface with the thrust surface of the rotating pulley.