JPS6030240B2 - drum type clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum-type clothes dryer, and more specifically, by directly driving the rotation drive section of the drum by a linear motor system, the mechanism section is simplified and at the same time, the heat generated from the drive source is reduced. is used for drying clothes to improve the drying effect.

The conventional drive system for drum-type clothes dryers uses a belt to connect a pulley fixed to the motor shaft and the outer circumference of the drum, and the rotation of the motor is reduced by the ratio of the diameters of the drum and pulley. For example, set the drum to 40~
It was to be rotated at 6pm. According to the above mechanism, pulleys, belts, tension rollers, etc. are required, and the number of parts and assembly man-hours are large. At the same time, the number of rotations fluctuates due to slipping and wear of the belt, and furthermore, rotation failure occurs during long-term use. There were times when I was not satisfied.

FIG. 1 shows a schematic side cross-sectional view of a conventional device of this kind, in which 1 is the main body of the clothes dryer, 2 is a drum rotatably supported in the main body 1, and a motor 5 is connected to the main body via a belt 3 and a pulley 4. Driven by. Further, a filter cover 6 and a filter cover 7 are provided on the rear wall of the drum. 8 is the heater cover,
A heater 9 is provided inside the drum 2, and air flowing in from an intake row 1 provided on a back plate 101 of the main body 1 is heated by the heater 9 and then flows into the drum 2.

Reference numeral 12 denotes an exhaust wind body provided at the rear of the drum 2, and a fan 13 is installed inside, and this fan is connected to the fan belt 1.
4 and a fan pulley 16.

The exhaust fan 12 is connected to the drum 2 to guide the air inside the drum to the exhaust row 5. 17 is a door.

As mentioned above, the conventional configuration described above has various problems both in terms of structure and operation, and it has been desired to solve these problems.

The present invention can solve the above-mentioned conventional problems, and examples thereof will be described below.

Note that in FIGS. 2, 3, and 4, the same reference numerals as those in FIG. 1 indicate the same members, so the explanation thereof will be omitted and the same reference numerals will be referred to. In FIG. 2, reference numeral 18 indicates a flat motor stator, and reference numeral 19 indicates a fan drive motor.
FIG. 3 shows a front schematic view of the rotational drive section of the drum, and 2
It is a belt-shaped rotor fixed to the side wall of the Kawama drum 2, the surface of which is made of copper, aluminum, or other conductive non-magnetic material, and the intermediate layer with the drum 2 made of a conductive magnetic material.
It has an annular shape that is concentric with the center axis of rotation.

If the drum 2 is made of magnetic material, the intermediate magnetic material can be omitted. Reference numeral 21 denotes a plurality of slit-shaped gaps provided in the side wall of the belt-shaped rotor 20 and the drum 2 in the radial direction, which form an insulating part for the current path flowing through the conductive non-magnetic material, and also serve as an insulating part for the current flowing through the conductive non-magnetic material. It is a ventilation hole.

A rotary wheel 22 has a rotary shaft 22a supported by a flat motor stator 18, and rotates on the side wall of the drum.

A spring 23 is an elastic body that presses the flat motor stator 18 against the side wall of the drum in the longitudinal direction of the central axis of rotation of the drum.

24 is a guide pin that supports the stator 18.

FIG. 4 shows details of the drum rotation drive section, and particularly shows the case where the drum 2 is made of a magnetic material.

A predetermined gap q is formed and maintained between the stator 18 and the rotor 20 in the length direction of the rotation center axis of the drum 2. Next, to explain the specific operation, when a moving magnetic field is generated by an AC power source in the stator winding of the flat stator 18 in which polyphase windings are distributed, this moving magnetic field is Induces eddy currents in the magnetic material.

This eddy current creates a countermagnetic field that interacts with the moving magnetic field to move the rotor 20 and generate a force that creates a torque on the rotating drum. At this time, the number of poles of the stator winding is determined so that the rotation speed of the drum is 40 to 6 pm. When current flows through the stator windings, stator 18 and rotor 2
A magnetic attraction force is generated between 0 and they attract each other, but
A gap q between the stator and the rotor is maintained at a constant distance by a rotating wheel 22 supported by the stator 18.

In addition, the slit-shaped air gap 21 provided between the two rotors serves as an insulating part that regulates the flow of the generated electric current, and at the same time serves as an intake hole for air into the drum 2. , heat exchange takes place, cooling the rotor and heating the air itself.

Therefore, the heat generated by the eddy current generated in the rotor is transmitted through the drum to the clothing, and the air passing through the rotor slits is heated, suppressing the rotor's own heat generation, which increases the temperature of the rotor. is suppressed and the overall efficiency of the motor is improved.

As described above, according to the present invention, the following effects are achieved.

'1} Since the rotor fixed to the side wall of the drum is directly rotated by the stator, there is no need for a reduction mechanism, etc.
The mechanical part is simplified, the cost is low, and the main body is compact.

(2- By fixing the rotor to the flat part of the drum side wall, processing and assembly become easier.

By supporting the rotating wheel on the stator, moving the drum side wall, and elastically supporting the stator, the gap between the stator and rotor can be maintained constant, and the drum can be stabilized. rotation is obtained.

'4} By providing slit-shaped gaps in the rotor and the drum side wall, an insulating part is formed to regulate the flow of the wax current generated in the rotor, and an air intake hole is formed in the drum. It improves heat exchange, improves the overall efficiency of the motor, and improves the drying effect.

[Brief explanation of drawings]

FIG. 1 is a schematic side sectional view of a conventional clothes dryer, FIG. 2 is a schematic side sectional view of this type of device in an embodiment of the present invention, and FIG.
The figure is a schematic front view of the drum rotation drive section, and FIG. 4 is a side sectional view of the drum rotation drive section. 1...Body, 2...Drum, 13...
...Fan, 18...Stator, 20...Rotor, 21...Slit-shaped gap, 22...
... Rotating wheel, 23 ... Spring (elastic body)
, q... void. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 A ring-shaped conductive non-magnetic material comprising a drum rotatably supported within the main body, and a fan for supplying drying air into the drum, and arranged concentrically with respect to the radial direction of the central axis of rotation of the drum. A rotor made of a conductive magnetic material and a conductive magnetic material is fixed to the side wall of the drum, and the rotor and the drum side wall are provided with ventilation holes consisting of a plurality of radially oriented slit-shaped gaps, and facing the rotor. ,and,
A stator is provided to form a moving magnetic field in the radial direction, and the stator is elastically supported in the direction of the central axis of rotation of the drum.
A drum-type clothes dryer is provided with a rotary wheel that forms and maintains a gap between the stator surface and the rotor surface and rolls on the side wall of the drum.