JPH0527169Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a drum that washes and dehydrates clothes by rotating a rotating drum, and then dries the clothes with hot air while stirring the clothes. Regarding type washer/dryers.

(Prior Art) As shown in FIG. 2, a conventional drum-type washer/dryer has a tub 2 disposed inside an outer box 1 via an elastic support mechanism 3, and a horizontal shaft type inside the tub 2. A rotating drum 4 is rotatably arranged via rotating shafts 5 and 6. A drive pulley 7 fitted on the left rotating shaft 5 is rotated by a motor 8 attached to the outer bottom of the tub 2. Further, a circulation duct 9 is provided at the top of the tub 2 for circulating hot air as shown by arrow A during drying operation, and a circulation fan 10 and a heat exchanger 11 are installed in the circulation duct 9.
and a heater 12 are provided. Further, a cooling duct 13 (see FIG. 3) is provided so as to intersect with the heat exchanger 11 portion of the circulation duct 9, and a cooling fan 14 is provided within the cooling duct 13. and a circulation fan 10 are rotated by a motor 15. In this case, during drying operation, both fans 10 and 14 are rotated, and circulating warm air is directed through the circulation duct 9 at the arrow A.
As shown in FIG. 3, the circulating hot air is supplied into the rotating drum 4, and in the process of passing through the heat exchanger 11, it exchanges heat with the outside air flowing in the cooling duct 13 as shown by arrow B in FIG. dehumidified.

(Problem to be solved by the invention) In the case of the conventional configuration described above, there is a large and heavy drive pulley 7 on one side (left side) of the tub 2;
No such heavy objects are attached to the other side (right side). Therefore, when considering the weight balance of the tub 2 as a whole, the drive pulley 7 side is heavier than the opposite side, and the weight balance in the horizontal direction is not maintained. If the rotary drum 4 is rotated at high speed during dewatering operation in such an unbalanced state, the tub 2 will vibrate greatly. After that, I put weights to correct the imbalance in the bucket 2.
If the weight balance was corrected by attaching it to the body, the number of assembly steps would increase, resulting in high costs.

Furthermore, since the rotary drum 4 is supported by both shafts 5 and 6, unless the concentric precision of both shafts 5 and 6 is considerably improved, the misalignment of the axes will directly become a source of vibration. Therefore, if an attempt is made to increase the rotational speed of the rotary drum 4 during dewatering (high-speed dehydration) to improve the dehydration rate (shorten drying time), it is necessary to assemble the bearing devices 17 and 18 as a vibration-proofing measure. Accuracy must be considerably improved, which is also a factor leading to high costs.

The present invention is an attempt to solve such problems, and therefore, its purpose is to provide a drum-type washer/dryer that can reduce the vibration of the tub during dewatering with a simple and inexpensive configuration. .

(Means for Solving the Problems) The drum-type washer/dryer of the present invention includes a tub having a clothes entrance and exit at the top, and a rotatably installed tub inside the tub, which washes, dehydrates, and dries the clothes inside by the rotation of the tub. A horizontal shaft-shaped rotating drum that stirs during operation,
A rotating shaft that is provided at the center of rotation of the rotating drum so as to protrude to one side of the tub and supports the rotating drum in a cantilever manner on the tub, and a drive pulley that is attached to this rotating shaft and rotated by a motor. and a heat exchange type fan device disposed on the other side of the tub, which blows air into the rotating drum during the drying operation to dry the clothes and dehumidifies the exhaust gas from the rotating drum by exchanging heat with outside air. It is equipped with the following.

(Function) According to the above configuration, since the drive pulley is located on one side of the tub and the heat exchange type fan device is located on the other side, the entire tub is Balances the weight horizontally. Furthermore, since the rotating drum is cantilever-supported on the tub by a single rotating shaft, there is no need to align the shafts with each other as in the conventional method, which requires high-speed dewatering and particularly high assembly precision. It can be easily achieved without any

(Example) An example of the present invention will be described below with reference to FIG. Reference numeral 21 denotes an outer box of the drum-type washer/dryer, and inside thereof a tub 22 is supported via an elastic support mechanism 23. A horizontal shaft-shaped rotating drum 24 is disposed inside the tub 22, and a rotating shaft 25 fixed to the center of the left side plate 24a is supported by a bearing device 27 fixed to the left side wall 22a of the tub 22. There is. Thereby, the rotating drum 24 is cantilevered on the tub 22 by one rotating shaft 25. This rotating shaft 25
protrudes from the left side of the tub 22, and a drive pulley 29 is fitted to its tip.

On the other hand, on the other side of the tub 22, that is, on the right side, a heat exchange type fan device 30 is disposed. This heat exchange type fan device 30 includes a fan casing 31 provided on the outer side of the right side wall of a tub 22, and a double-winged fan casing 31 that serves as a heat exchanger and is arranged so as to partition the inside of the fan casing 31 into two left and right chambers 31a and 31b. It is composed of a fan 32. On the side wall of the right chamber 31b,
An intake port 35 is formed in the center, and an exhaust port 36 is formed on the outer circumferential side, and each communicates with an intake port 37 and an exhaust port 38 formed on the right side surface of the outer box 21.

Reference numeral 39 denotes a circulation duct equipped with a heater 40 disposed above the rotating drum 24, one end of which communicates with the left chamber 31a, and the other end of which communicates with the left side wall 2 of the tub 22.
It is connected to a hot air supply port 41 formed at the upper part of 2a. Correspondingly, a large number of small holes 42 are formed in the left side plate 24a and the body part 24c of the rotating drum 24, and each of these small holes 42 serves as a hot air inflow hole and a dehydration hole.
The warm air is supplied into the rotating drum 24 through the rotary drum 24. Incidentally, clothing entrances (not shown) are provided at the tops of the outer box 21 and the tub 22, respectively, and the rotating drum 24 is connected from these clothing entrances (not shown).
You can put clothes in and take them out.

Reference numeral 43 denotes a double-shaft motor fixed to the outer bottom of the tub 22, and is configured such that its speed can be changed by changing the number of poles, for example. The left rotation shaft 43 of this motor 43
a is connected to a deceleration mechanism 44, and this deceleration mechanism 4
A belt 46 is stretched between the drive pulley 29 and a pulley 45 fitted on the output shaft 44a projecting to the left side of the drive pulley 29. In addition, the motor 43
A fan drive shaft 48 is rotatably supported by a bearing 48a on an extension of the rotation shaft 43b on the right side, and these shafts 43b and 48 are connected by, for example, a spring-type clutch mechanism 47 during drying operation. It's getting old. And this fan drive shaft 4
A pulley 49 is fitted to the right end of the fan 8 , and a belt 52 is stretched between the pulley 49 and a pulley 51 provided at the center of the fan 32 . Note that 53 is a lint filter that covers the ventilation port 34 of the rotating drum 24, and 54 is a butthole (only one is shown) provided intermittently on the inner peripheral surface of the body 24c of the rotating drum 24.

On the other hand, a large-diameter annular portion 60 is formed on the right side wall 22b of the tub 22, and correspondingly, a large-diameter cylindrical opening 61 is formed on the right side plate 24b of the rotating drum 24.
is formed. The cylindrical opening 61 of the rotating drum 24 is rotatably fitted into the annular portion 60 of the tub 22 via a seal member 62. In this case, a shaft 63 that connects and fixes the fan 32 and the pulley 51 is supported by the fan casing 31 via a bearing 64. Further, a large number of ventilation holes 65 are formed in almost the entire area inside the annular portion 60 of the tub 22, and the inside of the rotating drum 24 is passed through the ventilation holes 65 and the cylindrical opening 61 into the left chamber 31a of the fan casing 31. is communicated with.

Next, the operation of the above configuration will be explained. Clothes and detergent are put into the rotating drum 24 through the clothes entrance (not shown) provided at the top of the outer box 21 and the tub 22, and water is supplied into the tub 22. When the washing operation is started, the motor 43 is started, and its rotational force is transmitted to the drive pulley 29 via the speed reduction mechanism 44, pulley 45, and belt 46. As a result, the rotary drum 24 is rotated and the clothes inside are agitated up and down, and the agitation action washes the clothes with detergent. During this detergent washing process and the rinsing process and dewatering process described later, the clutch mechanism 47 is maintained in an open state, the fan drive pulley 48 is not rotated, and therefore the fan 32 is not rotated either.

After the detergent washing process is completed, water is drained and water is resupplied, and the clothes are rinsed by rotating only the rotating drum 24 in the same manner as described above. After the rinsing process is completed, the water is drained, and the motor 43 is rotated at high speed, and the rotating drum 24 is rotated at high speed to dehydrate the clothes. After this dehydration is completed, the drying process begins.

In this drying process, the clutch mechanism 47 is connected to the rotating shaft 43b of the motor 43 and the fan drive shaft 48.
The motor 43 is operated with the two connected. As a result, the rotational force of the motor 43 is transmitted to the fan 32 via the fan drive shaft 48, pulley 49, and belt 52, and the fan 32 is also transmitted to the rotating drum 2.
Rotated with 4. In this drying process, the heater 40 is also energized, and the rotation of the fan 32 causes air in the rotating drum 24 to be sucked into the left chamber 31a of the fan casing 31 through the cylindrical opening 61 and the ventilation hole 65 as shown by arrow C. The air is heated through the circulation duct 39 by the heat of the heater 40 and discharged from the hot air supply port 41 into the tub 22 .
This hot air is transferred to the rotating drum 24 as shown by arrow D.
It flows into the interior through each small hole 42 of the left side plate 24a and body part 24c, and dries the clothes. The moist air that has removed moisture from the clothes is sucked into the left side chamber 31a of the fan casing 31 again, where it is sucked into the right side chamber 31b through the air inlets 37 and 35 and the outside air is sucked into the right side chamber 31b via the fan 32. Heat is exchanged and dehumidified. The dehumidified air is warmed again through the circulation duct 39 and is then dried. In this way, while circulating warm air, the clothes are turned upside down by the rotation of the rotating drum 24, thereby efficiently drying the clothes.

According to this embodiment described above, the drive pulley 29 of the rotating drum 24 is located on one side (left side) of the tub 22.
However, since the heat exchange type fan device 30 is located on the other side (right side), the horizontal weight balance of the tub 22 as a whole can be maintained by the drive pulley 29 and the heat exchange type fan device 30. Therefore, even if the rotary drum 24 is rotated at high speed during the dewatering operation, the vibration of the tub 22 is suppressed to a low level, and therefore, the laborious unbalance correction work is unnecessary or greatly simplified. Moreover, since one fan 32 has both the functions of blowing air and exchanging heat, one heat exchanger 11 and one fan are not required compared to the conventional structure shown in FIG. That much,
The configuration is simplified, and together with the above-mentioned effects, manufacturing costs can be reduced.

Furthermore, since the rotary drum 24 is cantilever-supported on the tub 22 by one rotating shaft 25, there is no need to align the shafts with each other as in the conventional case.
The fitting between the annular portion 60 of No. 2 and the cylindrical opening 61 of the rotary drum 24 allows for a certain degree of variation in precision compared to alignment of the shafts, and is inherently less likely to vibrate. Therefore, high-speed dehydration can be achieved without requiring particularly high assembly precision.
It has the advantage of being easy to achieve and reducing the cost of high-speed dehydration. Moreover, during drying, the entire large-diameter cylindrical opening 61 of the rotating drum 24 can be used as an exhaust passage, so the ventilation resistance of the exhaust gas toward the inside of the fan casing 31 can be reduced, and hot air can be circulated efficiently. As a result, the drying time can be shortened by improving the dehydration rate due to the above-mentioned high-speed dehydration.

In this embodiment, since both the rotary drum 24 and the fan 32 are driven by one motor 43, the number of motors is reduced by one compared to the conventional structure, and from this point of view, the structure is also simplified. It can contribute to simplification. However, the rotating drum 27 and fan 32
Even if the two are driven by separate motors, the intended purpose of the present invention can be fully achieved.

In addition, the present invention can be modified in various ways, such as by using other types of clutch mechanism 47, such as an electromagnetic type or a hydraulic type, instead of a spring type.

(Effects of the invention) As is clear from the above explanation, the present invention has a rotating drum drive pulley located on one side of the tub and a heat exchange type fan device on the other side, so that heat exchange with this drive pulley is possible. The horizontal weight balance of the tub as a whole can be maintained by the shaped fan device. Therefore, even if the rotary drum is rotated at high speed during dehydration operation, the vibration of the tub can be suppressed to a low level, and therefore, the laborious unbalance correction work can be unnecessary or greatly simplified. Moreover,
Even one heat exchange type fan device has the functions of both air blowing and heat exchange.
The configuration related to air blowing and heat exchange can be simplified compared to the past. Furthermore, since the rotary drum is cantilever-supported on the tub by one rotary shaft, there is no need to align the shafts as in the conventional method, which requires high-speed dewatering and particularly high assembly precision. This can be easily achieved without any problems, and together with the above-mentioned effects, manufacturing costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an overall longitudinal sectional front view showing one embodiment of the present invention, and FIGS. 2 and 3 show conventional examples.
Figure 2 is a diagram equivalent to Figure 1, and Figure 3 is the − of Figure 2.
FIG. 3 is a cross-sectional view of the circulation duct and cooling duct portion shown along the line; In the drawing, 22 is a bucket, 24 is a rotating drum, 25 is a rotating shaft, 27 is a bearing device, 29 is a drive pulley, 3
0 is a heat exchange type fan device, 32 is a fan, 39 is a circulation duct, 40 is a heater, 43 is a motor, 47
60 is a clutch mechanism, 60 is an annular portion, 61 is a cylindrical opening, and 62 is a sealing member.

Claims (1)

[Scope of utility model registration request] A tub with a clothes entrance and exit at the top, a horizontal shaft-shaped rotating drum that is rotatably installed inside the tub and washes and dehydrates the clothes inside by rotation, and agitates during drying operation, a rotating shaft protruding from one side of the tub and supporting the rotating drum in a cantilever manner on the tub; a drive pulley attached to the rotating shaft and rotated by a motor; and a driving pulley on the other side of the tub. A drum-type heat exchange fan device disposed in the drum, which blows air into the rotating drum during the drying operation to dry the clothes, and dehumidifies the exhaust gas from the rotating drum by exchanging heat with outside air. Washing and drying machine.