JPH0326077B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric dryer that dries clothes by rotating a drum.

Generally, in an electric dryer, high-temperature drying air is moved by the rotation of the impeller of a fan, and drying is performed by bringing the material to be dried into contact with the drying air. Here, the impeller rotates at a high speed in order to increase the airflow and wind pressure, and in order to withstand this high rotation speed,
As the bearing, an oil-impregnated bearing is used. A felt is provided inside the bearing, and there is a risk that lubricating oil may leak out and adhere to the impeller during the high-speed rotation. As the impeller rotates, the lubricating oil adhering to the impeller is blown off by centrifugal force, adheres to the inner surface of the fan case, and flies out of the machine from the discharge port. There is a great risk of staining the ceiling or walls near the aircraft.

The purpose of the present invention is to prevent lubricating oil from scattering outside the machine from the discharge port of the fan case, and its basic configuration is to integrate a protruding member into the inner surface of the fan case near the discharge port. By holding the oil-absorbing member with the protruding member, the oil-absorbing member impregnates and captures oil scattered by the rotation of the fan.

An embodiment of the present invention will be described below with reference to the accompanying drawings. In the figure, a box 1 constitutes the outer case of the dryer, and is composed of a side wall 1' and a front plate 2 provided on the front side thereof. Reference numeral 3 denotes a drum placed inside the box body 1. The rear part of the body plate 5 is partially provided with a baffle plate 4, and the rear part of the body plate 5 is shaped like a disk and has a small hole 6 in the center for air circulation.
A large number of circular base plates 8 are provided, and a bearing 7 is fixed to the center of the circular base plate 8, and the front part of the body plate 5 is sandwiched between a circular plate 10 having a circular opening with a flange 9 in the center. and the body plate 5 at the outer periphery of the disc 10.
are fixed by caulking etc. The drum 3 is mounted on a shaft 12 fixed near the center of a support plate 11 provided on the rear surface of the box 1 so as to connect the diagonal corners of the box.
It is supported by a bearing 7 fixed at the center of a circular base plate 8.

Also, the flange portion 9 of the disc 10 at the front of the drum 3
The inner surface has good wear resistance so that it can slide.
In addition, a bearing material 14 having a small coefficient of friction is attached and fixed. 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 15 is fixed to the front plate 2 via a block 16 and a heater plate 18 having a heater 17 fixedly supported therein, and the drum 3 is rotatably supported within the box body 1. Then, the drum pulley 22 fixed to one side of the shaft 21 of the motor 20 fixed to the motor support plate 19 fixedly supported on the bottom surface of the body 1' and the outer periphery of the body plate 5 are connected to the tension pulley 23.
The belt 24 wrapped around the drum 2
3 is rotationally driven.

Reference numeral 25 denotes a fan, in which a bearing 2 is 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.
9, the impeller 30 is rotatably supported via a fan shaft 31 fixedly fixed to the central boss portion of the impeller 30. At the other end of the fan shaft 31,
The impeller 30 is rotatably driven by a fan belt 34 that is wound around a pulley 32 fixed to the motor pulley 33 fixed to the other end of the shaft of the motor 20.

The box body 1 has a longitudinal direction in the lateral direction, and the drum 3 is installed offset to the right when viewed from the front of the front plate 2, and the motor 20 is positioned downwardly and upwardly at the other upper and lower corners of the box body 1. A fan 25 is provided respectively. Also, the fan case 26 of the fan 25,
27 discharge ports 35 are provided so as to protrude from holes in the top surface of the box body 1. The discharge port 35 is provided with a chevron-shaped outer circumferential rib, and a rib 36 is integrally molded on the top surface of the discharge port 35 to prevent foreign matter from falling into the interior from the discharge port 35 or accidentally touching a finger. This has the role of preventing the impeller 30 from coming into contact with the impeller 30.

On the inner surface of the fan case 26 near the discharge port 35, there is a pin 3 which is an integrally shaped protruding member.
7, and a felt 38, which is an oil-absorbing member, is inserted and fixed to the pin 37. This felt 38 prevents the back surface of the disk portion 39 of the impeller 30 from being visible from the upper surface of the discharge port portion 35. 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 through the back surface of the disc part 39 due to the rotation of the impeller 30, It serves to absorb the liquid so that it does not fly out. Also, felt 3
8 is a pin 37 whose head is melted and crushed to prevent it from falling off. A stepped cylinder 41 for attaching an exhaust port duct or the like is fitted into the discharge port 35 of the fan 25 by engaging a protrusion 35a protruding from the outer peripheral surface of the discharge port 35 with a claw portion 41a. It is something that

The bearing 29 of the fan 25 is provided with metals 43 and 44 at both ends of a case 42, a containing felt 40 is provided in the middle, and a fan shaft 31 with an impeller 30 and a pulley 32 fixed to both ends with the metals 43 and 44. The fan case 26 is fixed to the fan case 26 via a bearing plate 28 at a flange 45 at the center of the case 42. At the same time, a cylindrical body 46 surrounding the outer periphery of the body of the case 42 on the pulley 32 side is fixed. An oil-impregnated felt 47 is provided in the space between the cylinder 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's becoming like this. Further, one end of the cylinder 46 has a flange 50 on the inside, and the opening of the flange 50 projects toward the pulley 32 from the joint surface of the metal 43 of the case 42 on the pulley 32 side and the thrust surface of the pulley 32. The felt 47 inside the cylindrical body 46 absorbs the oil scattered from the joint surface.

The front plate 2 has a square input port 52 that fits into a square window 51 provided in the center of the front support plate 15, and the square window 51 and the input port 52 are joined with packing 53 so as to be almost airtight. There is.

The front plate 2 has a lid 55 that is rotatably supported by a hinge 54.
The lid 55 is closed so as to cover the input port 52, and when the lid 55 is closed, the ribs 56 provided on the lid 55 come into pressure contact with the hollow part 57 of the packing 53, making the inside of the drum 3 airtight. be. The hollow portion 57 of the packing 53 forms the frame of the input port 52, and has a shape with a slight bulge 58 toward the inside of the input port 52, as shown in FIG. t ₁ is the outside wall thickness of the hollow part
By molding it thicker than _t2 , the square input port 52 is formed.
This has the effect of preventing deformation of the shape of the hollow portion that occurs when the packing 53 is placed along the corner of the hole. This prevents deformation by improving the balance between the contraction on the inside and the expansion on the outside when bending along a corner.

An air intake port 59 is provided next to the input port 52 provided on the front plate 2, and a cover 60 is provided to cover this intake port 59.
A filter 61 is removably fitted in the. Furthermore, a filter cover 62 that covers the filter 61
The filter cover 62 can be opened and closed freely.
is provided on the cover 60 via a hinge. On the rear surface of the intake port 59, there is a heater plate 18 sandwiched between the front support plate 15 and a heater 17 fixed to the heater plate 18, and a small porous hole is provided 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 circular substrate 8 of the drum 3
A filter 64 is placed so as to cover the small hole 6 near the center of the
A filter cover 65 is fitted into a cylindrical fitting portion 66 integrally formed on the bearing 7. Therefore, the filter 64 filters the dust generated from the clothes in the drum 3 and prevents it from being released to the outside, and the filter cover 65 also prevents the filter 64 from being damaged by being rubbed by the clothes. It prevents

An air circulation hole 67 is opened at a position opposite to the small hole 6 of the circular substrate 8 of the support plate 11, and a circular seat 68 is formed around the air circulation hole 67 of the support plate 11.
A sliding packing 69 is integrally fixed by shaping the parts. This sliding packing 69 is made of a material with excellent flexibility and wear resistance, and one end thereof is in contact with a circular seat containing the central small hole 6 of the circular substrate 8.

Further, a guide path 70 formed into a box shape in one direction is formed on the support plate 8 from a circular seat 68 including an air circulation hole 67, and a sealed air guide path is formed by a patch plate 71 that closes the guide path 70. It is something to do. The end of the guide path 70 is a cylindrical opening 72, and the packing 7 is connected to an inlet 73 provided in the fan case 27 described above.
4 for airtight communication.

In this way, the heated air enters the heater 17 from the air intake port 59 from the filter cover 62 via the filter 61, and the heated air enters the front support plate 1 in the drum 3.
5 is inhaled through the small hole 63 of the drum 3, passes between the clothes in the drum 3, and is absorbed into the drum 3 along with water vapor generated from the clothes.
It is sucked into the fan 25 through the filter cover 65 and filter 64 on the rear surface, and further through the small hole 6 and the conduit 70 of the support plate 11, and is then discharged to the outside of the machine from the discharge port 35. This will speed up the drying process.

The lid 55 is provided with a rib 78 having a notch 77 and a circular portion 76 provided near the hinge 54 that opens and closes the lid 54 and which is approximately concentric with the center of rotation of the hinge 54, and a spring that abuts against the surface of the rib 78. 79 is fixed to the front plate 2 so that when the lid 55 is closed, it comes into contact with the rib 78 and the circular part 76, and when it is opened, it comes into contact with the notch 77, so that when the lid 55 is opened, the notch 7
The pushing force of a spring 79 that comes into contact with 7 serves as a stopper. As a result, the lid 55 can be held in an open state, and even if the lid 55 is not pressed by hand, the drum 3
This makes it easy to take clothes in and out.

Also, heater 1 is on the left side of drum 3 when viewed from the front.
7, the rotation direction of the drum 3 is
It is rotated to the right. This has the effect that the clothing under the drum 3 rotates and moves toward the heater 17 on the left side as it rotates, hits the hot air blown out from the small hole 63 facing the heater 17, and is further lifted up and dropped. When this falling occurs, air sucked out from the filter cover 65 at the rear of the drum 3 further heats it. 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 projecting member is integrally provided on the inner surface of the fan case of the fan near the discharge port, and the oil-absorbing member is held by the projecting member. The oil adhering to the impeller during fan operation and being scattered by centrifugal force can be prevented from exiting the machine through the discharge port by being impregnated and retained by the oil-absorbing member. This can prevent oil from adhering to the ceiling, walls, etc. of the house.

[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. 5 is a cross-sectional perspective view showing a part of the discharge port of the fan, and FIG. 6 is a cross-sectional view of the bearing part of the fan.
FIG. 7 is a sectional view of the hinge of the lid, FIG. 8 is a sectional perspective view of the packing of the inlet, and FIG. 9 is a front view of the internal structure seen from the front. 1... Box body, 3... Drum, 8... Circular board,
11...Support plate, 25...Fan, 26...Fan case, 35...Discharge port, 37...Pin (protruding member), 38...Felt (oil-absorbing member), 70
...Conduit, 73...Intake port.

Claims (1)

[Claims] 1. A shaft supporting a bearing provided on a circular base plate at the rear of the drum rotatably supported within the box is fixed to a support plate provided at the rear of the box, and a conduit is provided on the support plate to communicate with the inside of the drum. A protruding member is integrally provided on the inner surface of the fan case of the fan in the vicinity of the discharge port, and the conduit is connected to the suction port of the fan. Dryer.