JP3208129B2 - Drum type clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a drum type clothes dryer.

[0002]

2. Description of the Related Art Conventionally, in a drum-type dryer, cotton dust generated from clothes while drying clothes in a drum enters through a warm air inlet of a drum and accumulates in a heating device, thereby increasing the temperature of the heating device. Therefore, the dust causes burning and smoke generation, and when the heating device is a semiconductor heater, the dust increases the resistance of the ventilation path and decreases the calorific value. In particular, when the dust collecting filter generally provided at the outlet of the warm air of the drum becomes clogged, the wind pressure in the drum increases, and the dust easily accumulates on the heat generating device.

For this purpose, as shown in Utility Model Registration No. 1,449,656 (Japanese Utility Model No. 56-54960), a filter is provided between the heating device and the hot air inlet of the drum, but the deposition on the heating device portion is prevented. Even if it could, it could not prevent deposition on the filter and could not suppress the increase in the resistance of the ventilation path.

Further, as shown in a conventional embodiment, a filter provided between a heating device and a hot air inlet of a drum is provided so as to be in close contact with the hot air inlet of the drum. Although it has the effect of suppressing the amount of dust, once the cotton dust has entered, it cannot escape from between the heating device and the hot air inlet of the drum, and it is unavoidable that the dust gradually accumulates.

[0005]

According to the above prior art, it is possible to suppress the accumulation of dust on the heat generating device, but it is not possible to prevent the accumulation on the ventilation path. Was a factor leading to a decrease in the calorific value.

Further, if provided in close proximity to the warm air inlet of the drum, the absolute amount of dust intrusion can be reduced, but there is a drawback that the dust accumulates in the ventilation passage when used for a long time.

An object of the present invention is to provide a safe drum-type clothes dryer that prevents the filter from being clogged.

In order to achieve the above object, the present invention provides a drum for storing clothes, a blower fan for blowing air into the drum, a heating device for heating air blown into the drum, and a drum. and in the drum type clothes dryer and a motor for rotating Utateka moving the air blowing fan, a drum support responsible for part of the rotatably support and the drum of the drum is disposed in front of the drum, the blown extraordinary non-temperature air duct on the inside of the front Symbol drum to drum support
The outlet is located, and a hot air duct having a large number of holes is provided at the hot air duct outlet, and the heat generating device is installed upstream of the hot air at the hot air inlet of the drum, and the heat generating device is provided. wherein a filter for preventing cotton dust entering between the warm air inlet, characterized in that disposed opposite with a gap to the warm air inlet and.

[0009] Even if the dust temporarily enters from the warm air inlet when the clothes fall under the drum, the dust infiltration preventing filter is provided with a gap to the warm air inlet of the drum. Dust tends to come out again and the filter is less likely to be clogged.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

Reference numeral 1 denotes an outer frame, and a clothes input port 2 is provided on the front.
However, a door 3 for closing the clothes input port is provided.

Reference numeral 4 denotes a drum for rotating and stirring the clothes, and is driven via a drum belt 6 by a motor 5 arranged on the outer frame 1. The drum front 7 includes a drum support 8,
The drum rear portion 9 is rotatably supported by a rear support plate 10 supported by the outer frame 1.

The drum support 8 has a drum hot air inlet 1.
1 (usually a hole of 3 to 5 mm)
A drum hot air outlet 12 is provided, and a ventilation casing 13 is formed by a fan casing 14, an intermediate duct 15, and a front duct 16 by a blower fan 13 provided behind the drum rear portion 9. In the lower part of the intermediate duct 15,
There is a drain 18 leading to dehumidified water.

The blower fan 13 is driven by a motor 5 via a fan belt 19. Fan casing 1
Reference numeral 4 denotes a back cover 21 that covers the opening 20 at the rear part of the outer frame 1 and an air passage plate 22, and forms a cooling air passage 23.

Reference numeral 24 denotes a cooling air passage inlet, and reference numeral 25 denotes a cooling air passage outlet.

The blower fan 13 is composed of corrugated blades.
One side has a function of a circulation fan in the circulation ventilation path 17, and one side has a function of a cooling fan in the cooling ventilation path 23, and the temperature difference between the two sides cools the hot air in the circulation ventilation path 17. It also has the function of a heat exchanger that condenses and guides it to the drain 18.

The fan casing 14 has a circulation ventilation passage 1.
A partition plate is provided for partitioning the cooling air passage 7 from the cooling air passage 7.

A dust collecting filter 26 is disposed at the drum warm air outlet 12 in the circulation ventilation passage 17 so that dust does not enter the circulation ventilation passage 17. A heating device 27 is provided at the entrance 11.

The heat generating device 27 is an embodiment in which a semiconductor heater is used. Numeral 28 denotes a semiconductor heater, which is connected to a heater support base 29 via power supply plates 30 and 31, an insulating material 32, screws 3 and the like.
3 to form a heating device 27.

A filter 34 for preventing intrusion of cotton dust is provided in the circulation ventilation passage 17 between the heating device 27 and the hot air inlet 11 of the drum.
In this embodiment, the gap A is provided closely. For this filter, a wire mesh of about 30 to 50 mesh is usually used.

Next, the operation will be described. The clothes put into the drum 4 are stirred and rotated by the motor 5,
The hot air heated by the heat generating device 27 is sent into the drum 4 from the drum hot air inlet 11 and deprives the clothes of moisture,
It is sent into the circulation ventilation passage 17 by the drum hot air outlet.

At this time, the cooling air blown into the cooling air passage 23 by the blowing fan 13
A temperature difference is generated on both sides of the air, and the hot air is cooled and condensed.

The condensed water passes through the circulation ventilation passage 17 and is discharged from the drain port 18 to the outside of the machine. The cooled and condensed warm air passes through the intermediate duct 15 and the front duct 16, is again sent to the heat generating device 27, and is reheated to the drum 4.
And the drying process is continued.

During the drying process, the cotton dust adhering to the clothes due to the wind pressure or the like due to the drop impact of the clothes and the cotton dust generated during the drying enter the heating device 27 through the warm air inlet of the drum.

In this form of intrusion, the garment penetrates against the flow of wind by the wind pressure caused by the impact of the falling clothing.

In this embodiment, the wind pressure in the drum 4 increases as the dust collecting filter 26 becomes clogged, so that the filter easily enters.

The clothes in the drum 4 are placed in the drum hot air inlet 1.
1 and the dust is forcibly generated by contact with the heating device 27.
Is pushed into.

In the conventional embodiment, since the filter 34 has a small eye against the intrusion due to wind pressure, it is difficult for cotton dust to enter. However, the cotton dust rubbed on the filter surface by the contact of the cloth, Once in the heating device 27, it cannot be exited and is gradually deposited (FIG. 4).

In this embodiment, since the gap A is provided between the filter 34 and the hot air inlet 11 for the drum, the filter 34 has a small mesh against the intrusion due to the wind pressure, so that the same effect as that of the conventional embodiment can be obtained. is there.

The cotton dust that has entered due to the contact of the cloth enters through the hot air inlet 11 of the drum,
4 does not come into direct contact with the cloth, but only accumulates on the surface of the filter 34 in the same manner as intrusion by wind pressure. That is,
It is deposited in the gap A (FIG. 2). The cotton dust accumulated in this area
Since it is close to the drum hot air inlet 11, if it is far away, it tends to accumulate and accumulate. Due to the wind pressure of the blower fan 13 in the circulation ventilation passage 17, the air is returned to the inside of the drum again through the warm air inlet 11 during operation.

Since this is repeated, even if dust is temporarily accumulated between the heating device 27 and the drum hot air inlet 11 and on the surface of the filter 34,
Continuous deposition and deposition on the heating device 27 can be prevented.

[0032]

As described above, the present invention provides a drum for storing clothes, a blower fan for blowing air into the drum, a heat generating device for heating air blown into the drum, and a drum. And in a drum-type clothes dryer comprising a motor that rotatably drives the blower fan, the drum dryer rotatably supports, and has a drum support that bears a part of the drum, the drum support,
A drum hot air inlet formed of a number of holes is formed at a portion facing the inside of the drum, and the heating device is installed upstream of the hot air of the drum hot air inlet, and the heating device and the drum hot air inlet are provided. The filter for preventing the intrusion of cotton dust between
The drum-type clothes dryer is provided with a predetermined interval with respect to the drum hot air inlet.

According to this construction, even if the clothes are lifted by the rotation of the drum and then fall into the lower part of the drum, the filter for preventing the intrusion of the dust can be provided even if the dust temporarily enters from the hot air inlet. Since the heater is installed at a predetermined distance from the hot air inlet of the drum, the hot air from the heater makes it easier for the dust to come out of the hot air inlet of the drum again, and the filter is less likely to be clogged.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which cotton dust is temporarily accumulated.

FIG. 3 is a longitudinal sectional view of a main part showing a conventional example.

FIG. 4 is a longitudinal sectional view showing a state where cotton dust is deposited.

FIG. 5 is an overall view of an embodiment of the present invention.

[Explanation of symbols]

4: drum, 5: motor, 11: drum hot air inlet, 13
... a blower fan, 27 ... a heating device, 34 ... a filter.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 63-98192 (JP, U) JP-A 56-54960 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) D06F 58/02

Claims (1)

(57) [Claims] And 1. A drum clothing is housed, a blower fan for blowing air into said drum, a heating device for heating the air blown into said drum, to round Utateka moving the drum and the blower fan in the drum type clothes dryer and a motor, extraordinary the drum drum support responsible for part of the rotatably support and the drum is disposed in front of the drum, the inside of the front Symbol drum to the drum support Hot air duct
The hot air duct outlet is provided with a drum hot air inlet comprising a large number of holes, and the heating device is installed on the upstream side of the hot air from the drum hot air inlet. and, a drum type clothes dryer, characterized in that disposed opposite with a gap with respect to the hot air inlet filter for preventing cotton dust intrusion between the warm air inlet and the heat generating device.