JPH0975595A - Clothes drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clothes drying machine free from accumulations of dusts as thread dusts inside the frame of the machine without using any specific part for preventing the dusts. SOLUTION: The AC motor 11 of the cloth drying machine is situated at the position below the center of rotation of the drum 6 when viewed from the front, and at the lower right side with the direction of the rotation of the drum is counterclockwise, and at the lower left side with the clockwise direction. The circulation duct 17 is situated at the lower opposite position to the AC motor 11 with respect to the drum 6 and between the outer frame 1. The outer frame exhaust opening is situated at the upper side face opposite to the position of the AC motor 11 with respect to the drum 6 of the outer frame 1. The air duct groove 12b is situated to the casing 12 in order to blow cooled air to the AC motor 11. The cooled air is generated at a heat exchanger of the blower equipment 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer, and more particularly to a clothes dryer which controls so that dust such as thread waste does not accumulate in the frame of the clothes dryer.

[0002]

2. Description of the Related Art In a conventional rotary drum type clothes dryer, an object to be dried is put in the drum, and hot air is supplied into the drum while rotating the drum so that the hot air contains the humidity of laundry. The clothes are dried by repeating the process of exhausting the water from the drum, condensing the water vapor contained in the exhausted warm air, converting it into water, and discharging it out of the machine. That is, hot air is circulated through the rotating drum, water contained in the laundry is taken in as steam in the process, and the taken-in steam is condensed and dried. In the laundry, lint is separated during the drying process and moves with warm air, but if this lint enters the circulation air passage, it blocks the air passage and prolongs the drying time. It will cause trouble. Therefore, in this type of clothes dryer, a yarn waste collecting device composed of a mesh filter is provided in the circulating air passage after passing the clothes so that the drying operation is not hindered.

[0003]

However, when the above-mentioned conventional clothes dryer continues to be used while the thread waste is collected in the filter, the hot air passage is deteriorated and the dryer performance cannot be exhibited. , Thread dust leaks into the main body from the gaps such as the bearings of the drum, and dust accumulates on the motor, causing the temperature of the motor to rise and leading to unexpected accidents such as fire. A motor cover is attached to protect the motor from dust to prevent accumulation. When the motor cover is attached, the heat of the motor is trapped and the temperature rises, so a cooling fan is attached to the motor to cool it. Furthermore, the vibration of the motor is transmitted to the motor cover through the outer frame, and a chattering noise is generated between the outer frame and the motor cover, so the anti-vibration material is sandwiched between the outer frame and the motor cover. It has become an expensive clothes dryer.

It is an object of the present invention to provide a clothes dryer in which dust such as thread waste does not accumulate in the frame of the clothes dryer even if there are no parts for preventing dust.

[0005]

In order to achieve the above object, the present invention provides a drum for storing and rotating an object to be dried in a drum, a motor for driving the drum to rotate, and a heater in the drum. An air blower having a heat exchanger for condensing the moisture taken away from the material to be dried while inflowing the hot air generated by, a fan casing also serving as a casing of the air blower, and a circulation duct for circulating the hot air, In a clothes dryer having an outer frame for accommodating these parts, the motor is below the rotation center position of the drum when the clothes dryer is viewed from the front, and the rotation of the drum is counterclockwise. Direction is located on the lower right side, and in the clockwise direction is located on the lower left side, the circulation duct is on the lower side opposite to the motor position with respect to the drum, and a gap is provided between the circulation frame and the outer frame. Provided, characterized in that arranged.

Further, another feature of the present invention is that a drum for storing an object to be dried is rotated in the drum, a motor for rotating the drum, and hot air generated by a heater is introduced into the drum. An air blower that also functions as a heat exchanger that condenses the moisture taken from the material to be dried, a fan casing that also acts as a casing of the air blower, a circulation duct that circulates the hot air, and an outer frame that stores these parts. In the clothes dryer including the above, the fan casing is provided with an air passage groove for blowing the cooling air generated in the heat exchanger of the air blower to the motor.

[0007]

According to the present invention, when the clothes dryer is viewed from the front, the motor of the clothes dryer is located below the rotation center position of the drum and to the lower right when the rotation of the drum is counterclockwise. , Located on the lower left side in the clockwise direction. The circulation duct is on the lower side of the drum opposite to the motor position,
In addition, a gap is provided between the outer frame and the outer frame. An outer frame exhaust port is provided on the upper side surface of the outer frame opposite to the motor position with respect to the drum. Further, the fan casing is provided with an air passage groove for blowing the cooling air generated in the heat exchanger of the air blower to the motor.

As a result, when the dust floating in the outer frame falls on the upper surface of the rotating drum, it falls to the opposite side of the motor due to the rotating airflow and the rotating force of the rotating drum, and to the areas other than the upper surface of the rotating drum. For the falling objects, the cooling air of the heat exchanger is directly applied to the entire motor, whereby a wind barrier is stretched on the motor and dust can be prevented from accumulating.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A clothes dryer according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a longitudinal section of a clothes dryer according to an embodiment of the present invention. Reference numeral 1 denotes an outer frame. Inside the outer frame 1, a drum 6, which is a drying chamber, has a drum support 13 having a front side attached to a front inner surface of the outer frame 1 and a blower device (heat exchange fan) on the rear side. It is rotatably supported by a fan casing 12 which also serves as a casing 8.

Reference numeral 2 is a door which covers the clothes inlet 3 and is openable and closable, and 4 is a driving operation section. Reference numeral 5 is a control device including a microcomputer for driving and controlling the AC motor 11 and the heater 7.

The air blower (heat exchange fan) 8 sends the hot air generated by the heater 7 into the drum 6, and also serves as a heat exchanger. The air blower (heat exchange fan) 8 and the drum 6 are also provided. Is connected to an AC motor 11 via a drum belt 9 and a fan belt 10 for rotationally driving.

FIG. 2 shows the front of the clothes dryer of FIG.
Moreover, FIG. 3 shows the back surface of the clothes dryer of FIG. The AC motor 11 is installed on the lower right rear side when viewed from the front, and rotates in the counterclockwise direction. Point P shown in FIG. 3 is the rotation center position of the drum 6. A fan casing 12 is connected to the drum support 13 via a circulation duct 17. The circulation duct 17 is installed on the lower left side when viewed from the front.

Next, the flow of wind (air) in the outer frame 1 when the clothes dryer thus constructed is operated will be described.

First, the door 2 is opened, clothes to be dried are put in the drum 6 through the clothes inlet 3, the door 2 is closed, and the switch of the operation unit 4 is turned on.

When the switch is turned on, the AC motor 11
The heater 7 is energized, and the blower device (heat exchange fan) 8 that also serves as the drum 6 and the heat exchanger starts rotating in the counterclockwise direction as viewed from the front and rotates until the end of drying.

Here, the moisture evaporated from the clothes passes through the yarn waste collecting device 15 together with the circulating wind, passes through the drum exhaust port 6a on the rear wall of the drum, and flows into the circulation side of the fan casing 12. The outside air flows into the cooling side of the fan casing 12 from the back plate intake port 16a of the back plate 16, exchanges heat with the blower device (heat exchange fan) 8, and then about 1% of the cooling air flows from the back plate exhaust port 16b.
/ 3 is exhausted, and the remaining ⅔ is blown onto the AC motor 11 in the outer frame 1.

As shown in FIG. 4, half of the air is blown onto the upper surface of the AC motor 11 from the air passage groove 12b of the fan casing 12, so that the air flows on the surface of the motor 11 in the thrust direction. The other half is the back plate 16
Is blown onto the rear surface and the lower surface of the AC motor 11 from the recess 16c of the fan belt 10.
The wind will flow in the thrust direction on the surface of.

Thus, the entire surface of the motor is covered with the wind from the rear to the front, and the wind is, as shown in FIG.
The flow from the bottom to the top generated by the rotation of the drum 6 becomes
Is exhausted to the outside of the machine from the outer frame exhaust port 1a provided on the opposite side of the AC motor 11.

At the outer peripheral portion of the air blower (heat exchange fan) 8, the labyrinth seal portion with the partition plate separates the circulating air and the cooling air from entering and leaving the air blower (heat exchange fan) 8. On the front and back sides, heat is exchanged between the circulation side and the cooling side of the fan casing 12, the moisture contained in the circulating air is condensed into water, and flows into the circulation duct 17 from the casing discharge port 12a of the fan casing 12. ,
It is discharged from the drainage port 17b to the outside of the machine. At this time, the circulation duct 17 is located under the opposite side surface of the AC motor 11.

In this way, a series of drying operations as a dehumidifying and drying method and the accompanying flow of wind (air) in the outer frame 1 are continued.

Next, the movement of dust carried by the flow of wind (air) inside the outer frame 1 will be described.

If the customer forgets to clean the yarn waste of the yarn waste collecting device 15 and continues to use it while the yarn waste is collected, the yarn waste collecting device in the drum 6 will be operated during the drying operation. The dust such as the yarn waste of 15 may be removed from the outer frame 1 through the gap of the bearing portion of the drum 6 or the like.
Leaked inward, light dust floats in the outer frame 1, and the floating dust falls by the principle of nature.

When the dust floating on the drum is dropped onto the upper surface of the drum 6, it is carried to the opposite side of the AC motor 11 by the rotating airflow and the rotating force of the drum 6 as shown in FIG. Although the part is discharged to the outside of the machine from the outer frame exhaust port 1a, most of the remaining part is the outer frame 1 intentionally provided in the outer frame 1 and the circulation duct 17.
It falls into the gap 20 between the circulating duct 17 and the circulation duct 17 and accumulates.

The dust falling on the surface other than the upper surface of the drum 6 is shown in FIG.
As shown in FIG. 5, the air on the cooling side of the blower (heat exchange fan) 8 is blown onto the upper portion of the AC motor 11 from the air passage groove 12b of the fan casing 12, and the upper surface of the AC motor 11 is directed from the rear to the front in the arrow direction. To the AC motor 1 through the baffle recess 16c of the fan belt 10 of the back plate 16
1 is carried on the lower surface of the AC motor 11 from behind and is carried by the wind moving from the bottom to the top generated by the rotation of the drum 6, most of which is provided on the opposite side of the AC motor 11. The air is exhausted to the outside from the outer frame exhaust port 1a. On the other hand, some of them fall into the gap 20 between the outer frame 1 and the circulation duct 17.

[0026]

According to the present invention, since dust such as thread waste does not accumulate in the frame, extra parts for protecting from dust are not required, and an inexpensive product can be manufactured.

Further, since unnecessary parts are unnecessary, the assembling can be simplified and the assembling efficiency can be improved.

Further, since it is possible to prevent the accumulation of dust on the motor or the like, safety can be secured and reliability can be improved.

[Brief description of drawings]

FIG. 1 is a vertical section of a clothes dryer according to an embodiment of the present invention.

FIG. 2 is a front view of the clothes dryer of FIG.

FIG. 3 is a rear view of the clothes dryer of FIG.

FIG. 4 is a detailed cross-sectional view of a main part showing the flow of air to the AC motor.

[Explanation of symbols]

1 …… Outer frame 1a …… Outer frame exhaust port 6 …… Drum 6a …… Drum exhaust port 7 …… Heater 8 …… Blower (heat exchange fan) 10 …… Fan belt 11 …… AC motor 12 …… Fan Casing 12a …… Fun casing discharge outlet 12b …… Air channel 15 …… Lint waste collection device 16 …… Back plate 16a …… Back plate intake port 16b …… Back plate exhaust port 16c …… Bald recess 17 …… Circulation duct 17b ...... Drainage port 20 ...... Gap

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Yasushi Kamori 1-1-1, Higashi-Taga-cho, Hitachi, Hitachi 1-1-1, Electric Appliances Division, Hitachi, Ltd. (72) Inventor Kenichi Ogoshi 1-1-1, Higashi-Tagacho, Hitachi City, Ibaraki Prefecture Electric Appliances Division, Hitachi, Ltd.

Claims (6)

[Claims] 1. A drum for storing and rotating an object to be dried in a drum, a motor for rotating and driving the drum, hot air generated by a heater into the drum, and moisture taken from the object to be dried. In a clothes dryer having an air blower that also serves as a heat exchanger for condensing, a fan casing that also serves as a casing of the air blower, a circulation duct that circulates the hot air, and an outer frame that houses the components. When viewed from the front of the clothes dryer, the motor is located below the rotation center position of the drum, and is located on the lower right side when the rotation of the drum is counterclockwise, and is located on the lower left side when the rotation is clockwise. The clothes dryer is characterized in that the circulation duct is arranged on the lower side of the drum opposite to the motor position and with a gap provided between the circulation duct and the outer frame. 2. The clothes dryer according to claim 1, wherein an outer frame exhaust port is provided on an upper side surface of the outer frame opposite to the motor position with respect to the drum. 3. The clothes dryer according to claim 1, wherein the fan casing is provided with an air passage groove for blowing cooling air generated by a heat exchanger of the blower to the motor. 4. The clothes dryer according to any one of claims 1 to 3, wherein the air passage groove is arranged so that the cooling air flows forward from a rear portion in the thrust direction of the motor. 5. A drum for storing and rotating an object to be dried in a drum, a motor for rotating and driving the drum, hot air generated by a heater in the drum, and moisture taken from the object to be dried. In a clothes dryer having an air blower that also serves as a heat exchanger for condensing, a fan casing that also serves as a casing of the air blower, a circulation duct that circulates the hot air, and an outer frame that houses the components. A clothes dryer, wherein the fan casing is provided with an air passage groove for blowing cooling air generated in a heat exchanger of the blower to the motor. 6. The clothes dryer according to claim 5, wherein the air passage groove is arranged so that the cooling air flows forward from a rear portion in the thrust direction of the motor.