JPS6230034B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum-type washing and drying machine that performs everything from washing to drying, and particularly relates to a drum-type washing and drying machine that is intended to shorten drying time.

First, the structure of a conventional drum-type drying/washing machine in the vicinity of the blowing port for blowing hot air will be described.

FIG. 1 is a side view of a conventional drum-type drying/washing machine (with the outer frame removed).

In FIG. 1, 5 is a drum that serves both as a washing tub and a drying container, 5a and 5b are drum side plates, and 6
is a large number of small holes drilled on the circumferential surface of the drum 5,
7 is a drum lid provided on the circumferential surface of the drum 5 as an inlet for clothes (not shown); 8 is a lifter provided inside the drum 5; during washing when the drum 5 rotates at a low speed; During rinsing and drying, the garment is lifted and dropped to provide a loosening effect during washing, rinsing, and drying.

9a and 16a are drum side plates 5a and 5, respectively.
These drum shafts 9a and 16a are rotatably supported by bearings 10a and 15a fixed to the outer tank 3, respectively. 14 is a drum drive pulley attached to the drum shaft 9a.

The configuration of the inlet that blows hot air is duct 2.
Drum shafts 9a, 3c having air blowing ports 3a, 3c provided at the outlet portions of drums 9a, 9b are attached to both sides of the drum
16a, and the sealing method for preventing hot air from leaking from the blowing ports is to provide elastic sealing materials 3d and 3e around the circumference of the blowing ports 3a and 3c, and to attach these to the drum side plate 5a. ，
By pressing and sliding on the drum side plates 5b, sealing was achieved between the drum side plates 5a, 5b and the blowing ports 3a, 3c.

However, with such conventional technology, there are problems such as displacement of the drum 5 in the thrust direction, thermal deformation of the sealing materials 3d and 3e due to hot air, wear on the sliding surfaces of the sealing materials 3d and 3e, surface runout of the drum side plates 5a and 5b, etc. This creates a gap between the drum side plate and the sealing material, which causes hot air to leak, resulting in a longer drying time.

Further, the sealing materials 3d and 3e are attached to the drum side plates 5a and 5.
Since it slides on the b-plane, it creates frictional resistance against the drum drive, reducing the number of rotations of the drum during dewatering, resulting in poor dewatering performance, which also has the drawback of prolonging the drying time.

The present invention eliminates the above-mentioned drawbacks of the prior art,
The object of the present invention is to provide a drum-type drying washing machine that reduces leakage of hot air blown into the drum, reduces frictional resistance to the drum drive, improves dewatering performance, and shortens drying time.

The drum type drying washing machine of the present invention is characterized in that the drum is rotatably supported on both sides thereof, and hot air heated by a heater is blown into the drum through a duct. A hollow drum shaft with a drum driving pulley attached was attached to the drum side plate, a hot air blowing pipe was inserted into the drum shaft via a bearing or a shaft sealing member, and the outer periphery of the drum shaft was fixed to the outer tank. A drum support shaft bearing is attached to the other side plate of the drum, a hollow drum support shaft is attached to the side opposite to the pulley of the outer tank, and the drum is supported by this drum support shaft through the drum support shaft bearing. A heater is disposed below the outer tank, and the duct is a fork-shaped duct that communicates from the heater to the hot air blowing pipe and the drum support shaft.

The present invention will be explained below with reference to Examples.

FIG. 2 is a side sectional view of a drum-type drying/washing machine according to an embodiment of the present invention.

In FIG. 2, the same numbers as in FIG. 1 indicate the same parts.

Further, 1 is an outer frame, and 2 is a lid provided on the upper surface of the outer frame 1. Reference numeral 3 denotes an outer tank, and an outer tank lid 4 for putting in and taking out clothes is provided on the upper part of the outer tank. Reference numeral 9 indicates a hollow drum shaft fixed to the drum side plate 5a, and reference numeral 10 indicates a bearing fixed to the outer tank 3. This bearing 10 rotatably supports the drum shaft 9. 11 is a bearing provided in the drum shaft 9; 12 is a hot air blowing pipe connected to the outlet of a duct 23 (details will be described later), the tip of which is inserted into the bearing 11;
A portion of the duct 23 near the connection portion of the hot air blowing pipe 12 is fixed to the outer tank 3 with a holder 13. 14
is a drum drive pulley, which is attached to the drum shaft 9.

On the other hand, a drum support shaft bearing 15 is fixed to the drum side plate 5b on the side where the drum drive pulley 14 is not attached, and a hollow drum support shaft 16 is fixed to the side 3b of the outer tank 3 opposite to the pulley. At 16, the drum 5 is rotatably supported via a drum support shaft bearing 15.

17 is a fan for sending drying air into the drum 5; 18 is a fan pulley attached to the shaft of the fan 17; 19 is a fan motor for rotating the fan 17; 20 is a fan motor 19
This is a motor pulley attached to. 21 is a fan casing surrounding the fan 17; 22 is a heater; the fan 17, the fan motor 19, and the heater 22 are all disposed below the outer tank 3. 23 is a hot air blowing pipe 1 from the heater 22;
2. It is a fork-shaped duct that communicates with the drum support shaft 16 and can guide the hot air heated by the heater 22 to the hot air blowing pipe 12 and the drum support shaft 16 in approximately the same amount. 24 is a drum drive motor; 25 is a motor pulley attached to the shaft of the drum drive motor 24;
A drum belt 31 is placed between the drum drive pulley 14 and the drum drive pulley 14 .

26 is an air intake port provided in the outer frame 1, 27 is a water supply valve, 28 is an exhaust port provided in the outer tank 3, and 29 is an outer tank 3
30 is a drain valve.

The washing, rinsing, and spin-drying operations of the drum-type drying/washing machine configured as described above will be explained.

To wash the clothes, first, wash water containing detergent is supplied from the water supply valve 27 into the outer tub 3, the clothes are put into the drum 5 through the drum lid 7, the drum 5 is rotated at low speed by the drum drive motor 24, and the lifter Step 8: Lift up the clothing and let it fall.

Rinsing is performed by supplying rinsing water from the water supply valve 27 to the outer tub 3 and rotating the drum 5 at low speed in the same manner as washing. After rinsing, the rinsing water is drained to the outside by the drain valve 30. Further, dewatering is carried out by rotating the drum 5 at high speed by the drum drive motor 24 after draining, and blowing off water droplets from the clothes using centrifugal force.

Next, the drying operation will be explained. After dehydration, drum 5
When the fan 17 is rotated while rotating at a low speed, outside air enters the outer frame 1 through the air intake port 26,
Next, the fan casing 21 is entered. This air is heated by the heater 22, and the hot air flows through the duct 23 into the hot air blowing pipe 12 and the hollow drum support shaft 16 on the side opposite to the pulley in almost equal amounts, and is blown into the drum from both sides of the drum 5. It can be done. The dried air that comes into contact with the clothes in the drum 5 and absorbs moisture from the clothes enters the outer tank 3 through the small hole 6 of the drum 5 and is exhausted to the outside of the machine from the exhaust port 28.

According to the present embodiment described above, the seal between the drum and the duct is sealed using bearings provided on both sides of the drum, without using the conventional seal structure and sealing material that slides on the drum side plate. This eliminates the gap between the drum side plate and the sealing material caused by misalignment of the drum in the thrust direction, sliding wear of the sealing material, thermal deformation of the sealing material, surface runout of the drum side plate, etc., and reduces hot air leakage. Drying time can be shortened.

In addition, since the drum side plate does not slide by friction due to sealing material, there is less resistance to the drum drive, and the drum rotation speed during dewatering can be increased, improving dewatering performance, and as a result, drying time can be reduced from this aspect. Also shorten.

Furthermore, by configuring hot air to be blown from the hollow shaft inside the bearing, the cross-sectional area of the hot air outlet to the drum becomes smaller, which increases the speed of the hot air and improves the contact between the clothes and the hot air. Since uneven drying of clothes is reduced, drying time can be further shortened.

Furthermore, since the hot air is blown into the drum 5 from both the pulley side and the anti-pulley side, that is, from the hot air blowing pipe 12 and the drum support shaft 16, it is possible to blow the hot air into the drum 5 only from one side, for example, from the hollow Drying time is shorter than when blowing only from the drum shaft.

In addition, since the duct 23 is formed into a fork shape, the amount of hot air flowing from the heater 22 to both sides is approximately equal, and uneven drying of clothes can be prevented.

In addition, since the heater 22 is disposed below the outer tub 3, the fan 17 that blows air to it and the fan motor 19 that drives it are also disposed near it, making the drum-type drying/washing machine stable. It also has the effect of providing structure.

According to experiments, the drying time of the product according to this embodiment is approximately 10% shorter than that of the conventional method.

In this embodiment, a bearing 11 is provided inside the hollow drum shaft 9 on the pulley side, but a sealing material related to a shaft sealing member may be used instead of this bearing. Even in this case, the circumferential length of the sliding portion is shorter than that in the conventional seal configuration, so the air leakage gap can be reduced, hot air leakage is reduced, and drying time can be shortened.

Further, with this configuration, there is also the practical effect that the drum bearing portion on the pulley side can be made at a lower cost than the embodiment shown in FIG.

Furthermore, in the embodiment shown in FIG. 2, a hollow drum support shaft 16 is used on the side opposite to the pulley, but instead of this drum support shaft, a hollow drum shaft (the drum shaft 16a in FIG. 1 is made hollow) is used. A similar effect can be obtained by using

As described above in detail, the present invention has the following effects.

(1) By eliminating the conventional seal structure and sealing material that slides on the drum side plate, ○ displacement in the thrust direction of the drum; sliding friction of the sealing material;
This eliminates the gap between the drum side plate and the sealing material due to thermal deformation of the sealing material, surface wobbling of the drum side plate, etc., reducing hot air leakage. On the other hand, since the resistance is small, the rotation speed of the drum during dewatering can be increased, the dewatering performance is improved, and the drying time is shortened as a result.

(2) By blowing hot air heated by a heater placed below the outer tank into the drum from the pulley side and the side opposite to the pulley through a fork-shaped duct, the drying time is shorter than when blowing only from one side. ○Because the duct is fork-shaped, the amount of hot air flowing from the heater to the pulley side and the anti-pulley side is almost equal, which prevents uneven drying of clothes.○H Because hot air is blown into the drum from the hollow shaft, , The cross-sectional area of the hot air outlet is small, which can increase the speed of hot air, improving the contact between clothes and hot air. Therefore, the drum type washing machine has a stable structure.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a conventional drum-type drying/washing machine (excluding the outer frame), and FIG. 2 is a side sectional view of a drum-type drying/washing machine according to an embodiment of the present invention. . 3... Outer tank, 5... Drum, 5a, 5b... Drum side plate, 9... Drum shaft, 10, 11, 15... Bearing, 1
2...Hot air blowing pipe, 14...Drum drive pulley,
16...Drum support shaft.

Claims (1)

[Claims] 1 The drum is rotatably supported on both sides,
In a drum type drying/washing machine in which hot air heated by a heater is blown into the drum through a duct, a hollow drum shaft with a drum drive pulley attached is attached to one side plate of the drum, and a bearing or shaft is mounted inside the drum shaft. A hot air blowing pipe is inserted and provided through a sealing member, the outer periphery of the drum shaft is supported by a bearing fixed to the outer tank, a bearing for the drum support shaft is attached to the other drum side plate, and the side opposite to the pulley of the outer tank is mounted. A hollow drum support shaft is attached to the drum support shaft, the drum is supported by the drum support shaft via the drum support shaft bearing, a heater is disposed below the outer tank, and a duct is connected from the heater to the hot air blowing pipe. , a drum-type washing and drying machine characterized by having a fork-shaped duct that communicates with the drum support shaft.