JPH0535000B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a clothes dryer.

[Conventional technology]

FIG. 4 shows a conventional example of a clothes dryer employing a top-open operation method. As shown in the figure, the clothes dryer has a clothes storage chamber made up of a rotating drum 1, and a clothes inlet 2 with a lid is provided in a part of the body of the rotating drum.
An outer lid 4 is provided on the top of the dryer main body 3, and a clothes stirring lifter 5 is provided on the inner wall surface of the rotating drum 1. Loading and unloading of clothes is performed by opening an outer cover 4 provided on the top of the dryer main body 3 and a cover of a clothes input port 2 provided in a part of the rotating drum body. Further, the stirring of the clothes is performed by the rotating action of the rotating drum 1 and the lifting action of the clothes stirring lifter 5 provided on the inner wall surface of the rotating drum 1. In addition,
Regarding this, there is Japanese Patent Application Laid-open No. 152691/1983.

[Problem to be solved by the invention]

However, in conventional clothes dryers that use a top-open operation system, when the dryer is stopped, the clothes input port provided in the rotating drum body must be opened at the top of the dryer body. It does not necessarily stop at the lid position. Therefore, if the clothes input port on the rotating drum body and the outer cover of the dryer body do not match, the operator should open the outer cover of the dryer body and then rotate the rotating drum by hand. The clothes inlet of the dryer must be aligned with the outer lid of the dryer body when loading and unloading the clothes.
The problem was that the operation was troublesome.

Note that a control mechanism may also be considered that aligns the clothes inlet of the rotary drum body with the outer lid of the dryer body when the clothes dryer is stopped. However, this complicates the structure of the dryer both mechanically and electrically, leading to a significant increase in product cost.
It's hard to say that it's necessarily a good idea.

For this reason, in consideration of the drawbacks of the conventional top-open operation method described above, the clothes storage chamber for storing clothes is constructed of a cylindrical body and plate-like members located on both sides of the body. Then, the cylindrical body is fixedly attached, and a clothing input port is installed in a part of the cylindrical body, and the plate-like members located on both sides of the cylindrical body are replaced with rotatable plate-like members, i.e. A conceivable configuration is to use a rotating plate-like member and install a clothes agitation lifter on this rotating plate-like member to provide a top-open operation system. With this top-open operation system, clothes are stirred by stirring up the clothes by rotating a clothes stirring lifter provided on a rotating plate-like member, but since the cylindrical body is fixed, the clothes are stirred. During stirring, the inner wall surface of the cylindrical body and the clothing move relative to each other, creating clothing friction resistance. Therefore, when the frictional resistance increases, such as when the clothes in the clothes storage chamber are pushed in more forcefully than necessary, the activation force between the rotating plate-shaped member and the clothes stirring lifter provided therein increases. In order to obtain the starting force to agitate the clothes, it is necessary to increase the starting torque of the motor that rotates them. However, this leads to problems such as an increase in the size of the motor and an increase in cost.

The present invention has been made in view of the above points,
It is an object of the present invention to provide a clothes dryer that can easily improve the agitation effect on clothes.

[Means to solve the problem]

The above-mentioned purpose is to make the inner circumferential surface of at least the lower half of the cylindrical body a substantially smooth cylindrical surface, and to create a member that has a coefficient of static friction of 0.5 or less against a cotton compress with a degree of dehydration of 57±5%. By configuring more
achieved.

[Effect]

The inner peripheral surface of at least the lower half of the cylindrical body is a substantially smooth cylindrical surface, and the dehydration degree is 57±.
Since it is made of a material that has a coefficient of static friction of 0.5 or less against a 5% cotton compress, the frictional resistance of the contact surface between the clothes and the cylindrical body is small, making the clothes in the clothes storage room stronger than necessary. Even when the clothes are pushed in, they can smoothly slide out and be raked up, and the effect of stirring the clothes can be easily improved.

In other words, the agitation performance of the clothing changes greatly depending on the difference in frictional resistance between the inner wall surface of the cylindrical body and the clothing. When the frictional resistance against the clothes increases, such as when the clothes in the clothes storage chamber are pushed in more forcefully than necessary, the starting force for agitating the clothes must be increased. That is, in order to improve the agitation effect on the clothes, it is necessary to reduce the frictional resistance at the contact surface between the cylindrical body and the clothes.

In the present invention, various experiments were conducted, and the inner peripheral surface of at least the lower half of the cylindrical body was made into a cylindrical surface with substantially no unevenness, and the coefficient of static friction against a cotton compress with a degree of dehydration of 57±5% was 0.5 or less. The member (sliding body) that becomes
The relationship between the coefficient of static friction and the agitation performance of clothes was investigated, especially when the clothes in the clothes storage compartment were pushed strongly. The results of the study are described below.

First, the degree of stirring performance of clothing was expressed by the following formula.

α=Tx/T ₀ ×100 (%) ...(1) In this equation (1), Tx is the motor that causes the rotary plate-like member to start rotating when the clothes in the clothes storage chamber configured according to the present invention are strongly pushed. Starting torque, T ₀ : This is the starting torque of the motor at which the rotating drum begins to rotate when the clothing in the rotating drum of the conventional configuration is strongly pushed. The agitation performance of clothing can be evaluated using α in equation (1) as follows. In other words, when α is around 100 to 105%, it is equivalent to the conventional stirring method using a rotating drum,
Clothes can be stirred well without the need to increase the starting torque of the motor that rotates the rotary plate member. If α exceeds 105%, the current starting torque of the motor will not be able to stir the clothes, and it will be necessary to increase the starting torque by increasing the size of the motor.

FIG. 5 shows the results of an examination of α and the coefficient of static friction μ ₀ of the sliding body against a cotton compress with a degree of dehydration of 57±5%. As is clear from the figure, as the static friction coefficient μ ₀ of the sliding body increases, α gradually increases, and when μ ₀ exceeds 0.5, α increases rapidly. Considering the relationship between α and the agitation state of the clothing, in order to ensure good agitation of the clothing, the coefficient of static friction μ ₀ of the sliding body against a cotton compress with a degree of dehydration of 57 ± 5% is 0.5. It turns out that the following can be used.

Therefore, in the present invention, the inner circumferential surface of at least the lower half of the cylindrical body is made into a cylindrical surface with substantially no unevenness,
In addition, it is made of a member that has a coefficient of static friction of 0.5 or less against a cotton compress with a degree of dehydration of 57±5%.
By doing so, it is possible to obtain a clothes dryer that can easily improve the agitation effect on clothes.

〔Example〕

The present invention will be explained below based on the illustrated embodiments. An embodiment of the present invention is shown in FIGS. 1-3. Note that parts that are the same as those in the conventional system are given the same reference numerals, and therefore their explanations will be omitted. A clothing storage chamber 6 for storing clothing is composed of a cylindrical body (hereinafter referred to as a fixed drum) 7 and plate-like members located on both sides thereof. A fixed drum 7 is attached and fixed to the dryer main body 3, and a part of the fixed drum 7 is provided with a clothes inlet 2 for loading and unloading clothes, and a rotatable plate member (hereinafter referred to as (referred to as rotating plate-shaped members) 9 and 10, and these rotating plate-shaped members 9,
A clothes stirring lifter 5 is installed at 10. Then, hot air is supplied to the clothes storage chamber 6 to dry the clothes. In this embodiment of the clothes dryer configured as described above, at least the inner circumferential surface of the lower half of the fixed drum 7 is formed into a cylindrical surface with substantially no unevenness, and the degree of dewatering is 57±.
It is composed of a member whose coefficient of static friction against a 5% cotton compress is 0.5 or less. By doing this, the frictional resistance of the contact surface between the fixed drum 7 and the clothes is reduced, and a clothes dryer that can easily improve the agitation effect on the clothes can be obtained.

That is, in the figure, reference numeral 11 denotes a top cover that covers the top surface of the dryer main body and has a clothes input port 2, and an outer lid 4 is provided on the clothes input port 2. The fixed drum 7 is also provided within the dryer main body 3 and is held via a fixed drum support 12 supported by the dryer main body 3. The upper part of the fixed drum 7 is connected to the clothes input port 2, and an inner lid 13 is installed on the top cover 11 to open and close the clothes input port 2.
The rotating plate-like members (rotating disks) 9 and 10 are each rotatably supported on the inner side surface of the fixed drum 7 around a disk shaft 14, and are rotated by drive pulleys 15 provided at both ends of the shaft of the motor 8. The plate members 9 and 10 are driven via a drive belt 16 that is placed around the outer periphery of the plate members 9 and 10. Rotating plate-like member 9,
The clothes stirring lifter 5 fixed to the rotary plate member 10 rotates together with the rotary plate-like members 9 and 10, and has the function of stirring up the clothes. The fan 17 has an air blower and is driven by a motor 8 via a fan pulley 18 and a fan belt 19. The fan casing 20 is connected to an opening 7a provided on the side surface of the fixed drum 7 via an intake port 20a and an intake duct 21, and is also connected to an exhaust port 22 provided on the dryer main body 3 via an exhaust duct 20b. It is joined. A hot air ventilation duct 24 provided with a heater 23 at one end is connected to an opening 7b provided on the side surface of the fixed drum 7 opposite to the opening 7a. Rotating plate member 9
A lint collector 25 for removing lint, etc. is provided at the center of rotation. 26 is provided on at least a part of the inner wall surface of the fixed drum 7, and the degree of dehydration is 57±5.
This is a resin sliding body with a coefficient of static friction of 0.5 or less per unit area of cotton compress.

When the motor 8 is driven in the clothes dryer configured as described above, the drive pulley 15 and the drive belt 16 rotate the rotary plate-like members 9 and 10, and the rotary plate-like members 9 and 10 are installed at the same time. The clothes stirring lifter 5 rotates. The clothes in the clothing storage chamber 6, which is composed of the fixed drum 7, the rotating plate-like members 9, 10, and the inner lid 13, are
0 and the rotating action of the clothes stirring lifter 5. Further, the picked up clothes are moved from the bottom of the fixed drum 7 to the lower side of the center line C of the clothes storage chamber 6, that is, about
It is lifted up between 90° and 180°, as shown by arrow A in the figure.
It is subjected to a falling action like this. During the fall, the clothes separate and become agitated. After lint is removed from the hot and humid air in the clothing storage chamber 6 by the lint collector 25, it is sent to the fan casing 2 via the intake duct 21.
0, and further exhausted to the outside of the dryer through the exhaust duct 20b and the exhaust port 22. Further, the outside air taken in through the intake hole 27 is heated by the heater 23 and then sent into the clothes storage chamber 6 through the hot air ventilation duct 24. This dries the clothes.

By the way, as mentioned above, in this clothes dryer, a sliding body 26 made of resin is installed on the inner wall surface of the fixed drum 7, and the coefficient of static friction against a cotton compress per unit area with a degree of dehydration of 57±5% is 0.5 or less. Therefore, the frictional resistance on the contact surface between the clothing and the fixed drum 7 is reduced. Therefore, even if the clothes in the clothes storage chamber 6 are pushed in more forcefully than necessary, the clothes will smoothly slide on the sliding body 26 as the clothes stirring lifter 5 rotates without increasing the starting torque of the motor 8. It is raised and subjected to falling action. As a result, the warm air is applied to the entire clothing, allowing very good agitation and drying of the clothing. Further, since the clothes input port 2 is provided at the upper part of the fixed drum 7, the operation of putting in and taking out clothes can be done from the upper part simply by opening and closing the outer cover 4 and the inner cover 13, so it can be easily done without any trouble.

Note that the sliding body 26 installed on the inner wall surface of the fixed drum 7 may be formed by pasting a molded product made of resin or the like with a coefficient of static friction of 0.5 or less;
It may be formed to be detachable. The sliding body 26 is not limited to an integral body, and may be formed from a plurality of divided sliding body units.

Further, instead of the sliding body 26, the inner wall surface of the fixed drum 7 may be coated with a resin having a coefficient of static friction of 0.5 or less, or the entire fixed drum 7 may be formed of a resin having a coefficient of static friction of 0.5 or less. good.

Further, as the resin, high molecular weight polyethylene is desirable.

Furthermore, as mentioned above, the clothes stored in the clothes storage chamber 6 are thrown up below the center line C of the clothes storage chamber 6 (between 90° and 180°) as shown in FIG. , the sliding body 26 may be installed within this range. Needless to say, the installation range of the sliding body 26 is determined by comprehensively considering the performance of the starting force of the motor 8 and the product cost.

In this way, according to this embodiment, the inner circumferential surface of at least the lower half of the fixed drum is made into a cylindrical surface with substantially no irregularities, and the degree of dehydration is 57. To provide a clothes dryer adopting a top-open operation system that greatly improves the agitation effect on clothes with a simple structure consisting of members whose coefficient of static friction against a cotton compress of ±5% is 0.5 or less. I can do it.

〔Effect of the invention〕

As described above, according to the present invention, the agitation effect on clothes can be easily improved, and a clothes dryer that can easily improve the agitation effect on clothes can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of an embodiment of the clothes dryer of the present invention, FIG. 2 is a longitudinal sectional side view of FIG. 1, and FIG. 4 is a longitudinal side view of a conventional clothes dryer, and FIG. 5 is a characteristic diagram showing the relationship between the coefficient of static friction μ ₀ of the sliding body and α indicating the degree of agitation performance of clothes. . 2... Clothes input slot, 3... Dryer body, 5...
Clothes stirring lifter, 6... Clothes storage chamber, 7... Cylindrical copper part (fixed drum), 8... Motor, 9, 10...
... Rotatable plate member (rotating plate member), 26...
...Sliding body.

Claims (1)

[Scope of Claims] 1. A clothing storage chamber for storing clothes is constituted by a cylindrical body and plate-like members located on both side end surfaces of the body, and the body is attached and fixed to the dryer main body, and the cylindrical body is fixed to the dryer body. A clothes inlet for putting in and taking out clothes is provided in a part of the torso, at least one of the plate-like members is a rotatable plate-like member driven by a motor, and a clothes stirring lifter is disposed on the rotatable plate-like member. In the clothes dryer that supplies warm air to the clothes storage chamber to dry clothes, the inner circumferential surface of at least the lower half of the cylindrical body is formed into a cylindrical surface with substantially no unevenness;
A clothes dryer comprising a member having a coefficient of static friction of 0.5 or less against a cotton compress having a degree of dehydration of 57±5%. 2 At least the lower half of the cylindrical body has a coefficient of static friction against a cotton compress with a degree of dehydration of 57 ± 5%.
2. The clothes dryer according to claim 1, further comprising a sliding body made of resin of 0.5 or less. 3. A patent characterized in that the cylindrical body is made of a metal plate, and at least the lower half of its inner surface is coated with a resin that has a coefficient of static friction of 0.5 or less against a cotton compress with a degree of dehydration of 57±5%. A clothes dryer according to claim 1. 4. The clothes dryer according to claim 2 or 3, wherein the resin is high molecular weight polyethylene.