JP2000107494A - Clothing drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inhibit heat dissipation of a rotating drum without using a thick one. SOLUTION: A clothing drying machine has an outer frame, a rotating drum 2 as a drying chamber rotatably disposed in the outer frame, a motor for driving the rotating drum 2, an air-blowing device for blowing air to the rotating drum 2 and a heater for heating the air flowing into the rotating drum 2. A sheet 40 for preventing sound generating is disposed on an inner periphery surface of the rotating drum 2, and partitioning parts 41 are arranged for keeping the sheet 40 for preventing sound generating at specified intervals with respect to the inner periphery surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer having a rotating drum for drying clothes.

[0002]

2. Description of the Related Art A sound generation preventing sheet (made of a synthetic resin made of polypropylene) for softening sound generation is provided inside a rotating drum of a clothes dryer. During the drying operation, the fasteners and buttons of the material to be dried hit the rotating drum made of steel plate to reduce the noise generated.

[0003]

Since the sheet for preventing sound generation is a thin sheet having a thickness of about (1 to 2) mm, heat in the rotating drum passes through the sheet for preventing sound generation from the outside of the rotating drum. Escape and waste power. The use of a thicker sheet for preventing sound generation can suppress heat radiation, but increases the cost.

The present invention has been made to solve the above problem, and has been to provide a device capable of suppressing heat radiation of a rotary drum without using a thick sound generation prevention sheet.

[0005]

According to the present invention, there is provided an outer frame, a rotating drum as a drying chamber rotatably provided in the outer frame, a motor for driving the rotating drum, and blowing air to the rotating drum. And a heater for heating the air flowing into the rotating drum, a sheet for preventing sound generation is provided on the inner peripheral surface side of the rotating drum, and the sheet for preventing sound generation is provided. It is characterized in that a partition portion for keeping a predetermined interval with respect to the inner peripheral surface is provided.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a clothes dryer according to an embodiment of the present invention. A rotating drum 2 is provided inside an outer frame 1 formed of a steel plate. A drum fan support 3 supports the rear side of the rotary drum 2, and a drum support plate 4 supports the front side of the rotary drum 2.

The drum fan support 3 is a rotary shaft that rotates together with the rotary drum 2 and is rotatably supported by a bearing (not shown). The drum support plate 4 is an annular body having a large opening at the center, and rotatably supports the front side of the rotary drum 2 on the outer peripheral portion thereof via a sealing material such as felt.

A door 5 which can be opened and closed is provided on the front side of the outer frame 1. A cylindrical input port 6 is provided inside the door 5. The outer end of the inlet 6 is attached to the outer frame 1, and the outer end is attached to the inner peripheral end of the drum support plate 4. The drum support plate 4 is supported by the outer frame 1 via the inlet 6.

A fan casing 7 is provided on the rear side of the rotary drum 2. The heat exchange type double-sided fan 8 in the fan casing 7 is rotatably supported by the drum fan support 3 via a bearing 9. A fan pulley 10 provided in the heat exchange type double-sided fan 8 is provided outside the fan casing 7.

A motor 11 for driving the drum fan is provided near a corner inside the bottom of the outer frame 1. Drum drive pulley 12 is provided on one rotation shaft of motor 11, and fan drive pulley 13 is provided on the other rotation shaft. A drum belt 14 is wound around the outer periphery of the drum drive pulley 12 and the rotary drum 2, and a fan belt 15 is wound on the fan pulley 10 and the fan drive pulley 13. The rotation of the motor 11 is transmitted to the rotating drum 2 and the fan 8 by the drum belt 14 and the fan belt 15.

The circulating air passage 16 for dry air is attached so that one end communicates with the outlet 17 on the dry air side of the fan casing 7 and the other communicates with the air outlet 18 on the drum side. A drain port 19 for draining condensed water is provided in the middle of the circulation path 16 for dry air. The drain 19 is provided at the lowest place. The drum-side blowing port 18 is provided on the drum support plate 4. Where the drum-side air outlet 18 is located, a hole through which air passes is formed in the drum support plate 4 and a heater 20 made of PTC is provided.

A drum exhaust port, which will be described later, is provided at the center of the rear side of the rotary drum 2, and a lint collecting filter 21 is provided at the drum exhaust port. The lint and the like contained in the air exhausted from the rotary drum 2 are collected by the lint collecting filter 21.

In the heat exchange type double-sided fan 8, fan blades for dry air and for cooling air are provided back to back,
A labyrinth seal 22 is provided on the outer periphery. The air exhausted from the rotary drum 2 is pressurized by a fan blade for dry air, flows through a circulation air passage 16 for dry air,
At 0, it is heated again and flows into the rotating drum 2 through the drum-side blowing port 18. The outside air flowing into the fan casing 7 is pressurized by the fan blade for cooling air and exhausted to the outside of the fan casing 7. When the outside air flows on the side of the fan blade for cooling air, the dry air flowing on the side of the fan blade for dry air is cooled to condense water vapor contained in the dry air to remove moisture. The dry air from which moisture has been removed from the clothes in the rotating drum 2 is dehydrated as described above. The condensed water thus produced is drained from the drain 19.

The rear side of the outer frame 1 is closed by a rear cover 23. The rear cover 23 has a cooling air intake hole 24 in the center.
However, a cooling outside air exhaust hole 25 is formed on the outside.
Cooling outside air enters the outer frame 1 through the cooling outside air intake hole 24, further flows into the fan casing 7, cools dry air and is discharged from the fan casing 7, and then flows out of the cooling outside air exhaust hole 25 into the outer frame 1. It is exhausted outside.

An operation panel 26 is provided immediately below the door 5 on the front side of the outer frame 1. A control device 27 including a microcomputer is provided behind the operation panel 26. This control device 27
Controls the energization of the heater 20, the motor 11, and the like while receiving the humidity information of the exhaust humidity sensor 28 (detecting the exhaust humidity of the rotating drum 2) provided in the fan casing 7.

The above-described rotary drum 2 has the configuration shown in FIGS. The rotating drum 2 has a cylindrical body 30, a rear side plate 31, and a front side plate 32.

A drum exhaust port 33 is formed in the center of the rear side plate portion 31, and a lint collecting filter 21 is provided to face the drum exhaust port 33. The front side plate portion 32 has a tubular receiving portion 34 that is bent outward at an inner peripheral end of an annular plate whose center is largely open. This cylindrical receiving part 3
The front side of the rotary drum 2 is supported by the rotatably supported outer peripheral portion of the drum support plate 4 via a sealing material.

The body 30, the rear side plate 31, and the front side plate 32 are formed of a steel plate. A sound generation preventing sheet 40 is provided on the inner periphery of the body 30 as a buffer. The sound generation preventing sheet 40 is formed of a plastic such as a polypropylene foam. Sound generation prevention sheet 4
The thickness of 0 is about 1 mm to 2 mm. A grid-like partition 41 is provided between the outer periphery of the sound generation preventing sheet 40 and the inner periphery of the body 30. The partition part 41 is formed integrally with the sound generation preventing sheet 40 and of the same material. The partition portion 41 is fixed to the rotary drum 2 by bonding the partition portion 41 to the body portion 30 with an adhesive or by holding down the surface of the sound generation preventing sheet 40 with a fixing tool. The partition 41 is square in FIG. 3, but may be rectangular (rectangular). It may be circular or triangular. A large number of these partition portions 41 are provided between the outer periphery of the sound generation preventing sheet 40 and the inner periphery of the body portion 30 in order to form a large number of spaces 42 as independent heat insulating layers.

It is necessary that the length (h) of the partition 41 is 14 mm or less. In order to enhance the heat insulation effect, it is necessary to stop natural convection in the space 42. Length (h) is 1
If it is 4 mm or less, natural convection does not occur in the space 42,
The heat insulation effect can be expected. In order to increase the effective volume of the rotating drum 2, it is desired to further reduce the height (h). However, if it is too low, when the sound generation preventing sheet 40 bends, the sound generation preventing sheet 40 comes into contact with the inner peripheral surface of the body 30 and heat is transmitted, and conversely, the heat insulating effect is weakened. Would.

Therefore, it is more desirable that the relationship between the length (h) of the partition 41 constituting the space 42 and the width (L1 · L2) of the partition 41 be as follows. First, in order to maintain the space 42, the partition 41 must have an appropriate width (L1).
・ When L2) is 10 mm to 100 mm, length (h) is 5
mm or less is appropriate. However, the lower limit of length (h) is 1m
m. If it is less than this, the sound generation prevention sheet 4
0, the sheet 40 for preventing sound generation may come into contact with the body 30 due to dimensional variation, distortion, etc. of the body 30, which is not desirable. In consideration of the actual use state of putting the clothes and rotating the rotary drum 2, the width (L1 / L2) is set to 20 mm to 60 mm.
It is appropriate to set the length (h) to 2 mm or less.
However, the lower limit of the height (h) is 1 mm as in the previous embodiment.

Since the sound generation preventing sheet 40 is arranged on the inner peripheral side of the body 30 in this manner, the fasteners and buttons of the material to be dried do not directly hit the body 30 and the generation of sound is suppressed. Can be In addition to this, the sound generation preventing sheet 40 is spaced from the inner periphery of the body 30 by a predetermined space 4.
2 is maintained so that natural convection of air does not occur in the space 42, and the heat in the rotating drum 2 can be suppressed from radiating outside the body 30. The heat radiation could be suppressed by about 2% to 3% as compared with the case where the sound generation preventing sheet was directly attached to the inner peripheral surface of the body 30. The power consumption and the drying time can be reduced by this amount.

Further, since the partitions 41 forming the space 42 are finely arranged vertically and horizontally, the sheet 40 for preventing sound generation is provided.
Is hardly bent and does not easily contact the body 30. If the partitioning portion 41 is not merely brought into contact with the inner peripheral surface of the body portion 30 but is bonded with an adhesive or the like, the sound generation preventing sheet 40 becomes more difficult to bend. The air in the space 42 does not escape even if it is pressed.
0 is hard to dent.

The width (L 1 · L 2) may be the same or different as long as L 1 · L 2 is within the above numerical range.

Next, another embodiment shown in FIG. 4 will be described.

The embodiment shown in FIG. 4 is different from the embodiments shown in FIGS. 1, 2 and 3 in that the sound generation preventing sheet 40-1 and the partition part 41-1 are formed separately. .
The sound generation preventing sheet 40-1 and the partition 41-1 must be bonded with an adhesive, or the partition 41-1 and the body 30 must be bonded with an adhesive. In this regard, the sound generation prevention sheet 40 and the partition 41 are integrated into FIGS.
Although it is more disadvantageous than that of FIG.
There is an advantage that 0-1 and the partition 41-1 can be made of a combination of different materials.

Next, another embodiment shown in FIG. 5 will be described.

The embodiment shown in FIG. 5 is characterized in that, in addition to the embodiment shown in FIG. 4, a sound generation preventing sheet is provided on the rear side plate 31 and the front side plate 3.

That is, a sheet 40-2 for preventing sound generation is provided on the inner side surface of the rear side plate portion 31 via a partition portion 41-2, and on the inner side surface of the front side plate portion 32 via a partition portion 41-3. And a sound generation preventing sheet 40-3. The sound generation preventing sheet 40-2 and the partition part 41-2 are formed separately from each other, and the sound generation preventing sheet 40-3 and the partition part 41-3 are formed separately. The dimensional relationship followed the embodiment of FIGS. 1, 2 and 3. Accordingly, heat radiation from the rear side plate portion 31 and the front side plate portion 32 is also suppressed, so that it is possible to further reduce the power consumption and the drying time.
In addition, the generation of sound is further suppressed.

Next, another embodiment shown in FIG. 6 will be described.

The embodiment shown in FIG. 6 is characterized in that, in addition to the embodiment shown in FIG.

That is, a heat-dissipating sheet 40-4 is provided on the outer surface of the drum support plate 4 via a partition 41-4. Partition part 41-4 and heat dissipation prevention sheet 40-
4 is one. The dimensional relationship followed the embodiment of FIGS. 1, 2 and 3. Thus, the heat radiation from the drum support plate 4 is also suppressed, so that it is possible to further reduce the power consumption and the drying time.

In this embodiment, the heat radiation preventing sheet 40-4 is disposed outside the heat radiation preventing sheet 40-4.
No. -4 avoids being worn by being rubbed by clothing moving around in the rotating drum 2. The drum support plate 4 does not rotate unlike the other components constituting the rotary drum 2,
Placing the heat dissipation prevention sheet 40-4 inside the drum support plate 4 causes severe wear due to rubbing of clothes, and is arranged outside to improve it.

Next, another embodiment shown in FIG. 7 will be described.

In the embodiment shown in FIG. 7, a sheet 40-7 for preventing sound generation is directly attached to the inner peripheral surface of the body 30 of the rotary drum 2, and heat is radiated to the outer peripheral surface of the body 30 through the partition 41-6. This is provided with a prevention sheet 40-6. Partition part 41
-6 and the heat dissipation prevention sheet 40-6 are integrated. The dimensional relationship followed the embodiment of FIGS. 1, 2 and 3. Thereby, heat radiation escaping to the outside of the body 30 is suppressed. The outer periphery of the rotary drum 2 is not covered with the heat radiation preventing sheet 40-6 only at the place where the heat radiation preventing sheet 40-6 is put around the drum belt 14. This is because the drum belt 14 cannot be hung around the outer periphery of the heat radiation prevention sheet 40-6.

[0035]

As described above, the present invention provides an outer frame, a rotating drum as a drying chamber rotatably provided in the outer frame, a motor for driving the rotating drum, and air to the rotating drum. A clothes dryer having a blowing device for blowing air and a heater for heating air flowing into the rotary drum, wherein a sheet for preventing sound generation is provided on the inner peripheral surface side of the rotary drum, and the sheet for preventing sound generation is provided. Is provided with a partition portion for keeping a predetermined interval with respect to the inner peripheral surface.

According to this configuration, the following advantages can be expected.

Since the sound generation preventing sheet is kept at a predetermined distance from the inner peripheral surface of the rotary drum by the partition portion, natural convection of air does not occur in the space at the distance, and the outside of the rotary drum is prevented. Can be suppressed, and power consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a clothes dryer according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a rotary drum showing one embodiment of the present invention.

FIG. 3 is an enlarged perspective view of a sound generation preventing sheet showing one embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a rotary drum showing another embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a rotary drum showing another embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a drum support plate showing another embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a rotary drum showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Outer frame, 2 ... Rotary drum, 11 ... Motor, 8 ... Heat exchange type double-sided fan (blowing device), 20 ... Heater, 40 ... Sound generation prevention sheet, 41 ... Partition part.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hideyuki Kimura 502, Kandachicho, Tsuchiura-shi, Ibaraki Pref.

Claims (7)

[Claims] An outer frame, a rotating drum as a drying chamber rotatably provided in the outer frame, a motor for driving the rotating drum, a blower for blowing air to the rotating drum, and the rotating drum A heater for heating the air flowing into the rotary drum, wherein a sound generation preventing sheet is provided on the inner peripheral surface side of the rotary drum, and the sound generation preventing sheet is provided at a predetermined distance from the inner peripheral surface. Clothes dryer characterized by having a partition part for keeping the clothes. 2. An outer frame, a rotating drum as a drying chamber rotatably provided in the outer frame, a motor for driving the rotating drum, a blower for blowing air to the rotating drum, and the rotating drum. A drying machine having a heater for heating air flowing into the rotating drum, wherein a sheet for preventing sound generation is provided on the inner peripheral surface side of the rotating drum, and the sheet for preventing sound generation and the inner peripheral surface are maintained at a predetermined interval. A clothes dryer characterized by having a large number of partition portions each of which forms a space as an independent heat insulating layer while being drooped. 3. The clothes dryer according to claim 1, wherein the sound generation preventing sheet and the partition are formed integrally or separately. 4. The clothes dryer according to claim 1, wherein the rotating drum is formed of a steel plate, and the sound generation preventing sheet and the partition are formed of plastic. 5. An outer frame, a rotating drum as a drying chamber rotatably provided in the outer frame, a motor for driving the rotating drum, a blowing device for blowing air to the rotating drum, and the rotating drum A heater for heating air flowing into the rotary drum, wherein the rotary drum has a body, a rear side plate, and a front side plate, and an annular ring slidably supports the inner periphery of the front side plate. In the clothes dryer provided with a drum support plate of the above, a sound generation prevention sheet is provided on the inner peripheral surface side of the body portion, and a sound generation prevention sheet is provided inside the rear or front side plate portion, The sound generation preventing sheet and the inner peripheral surface of the body portion are kept at a predetermined interval and provided with a number of partition portions each forming a space as an independent heat insulating layer, and the sound generation preventing sheet and the Keep the inner surface of the side plate Clothes dryer, characterized in that each provided with a plurality of partitioning portions for forming a space as an independent heat insulating layer with the. 6. An outer frame, a rotating drum as a drying chamber rotatably provided in the outer frame, a motor for driving the rotating drum, a blower for blowing air to the rotating drum, and the rotating drum. A heater for heating air flowing into the rotary drum, wherein the rotary drum has a body, a rear side plate, and a front side plate, and an annular ring slidably supports the inner periphery of the front side plate. In the clothes dryer provided with the drum support plate, a sound generation prevention sheet is provided on the inner peripheral surface side of the body, and a heat radiation prevention sheet is provided on the outer surface of the drum support plate, The sheet and the inner peripheral surface of the body portion are kept at a predetermined interval and provided with a number of partition portions each forming a space as an independent heat insulating layer, and similarly, the heat radiation preventing sheet and the drum supporting plate are provided. Maintained a predetermined distance from the outer surface Rutotomoni clothes dryer, characterized in that each provided with a plurality of partitioning portions for forming a space as an independent heat insulating layer. 7. The clothes dryer according to claim 1, wherein the predetermined interval is set to a range of 14 mm or less and 1 mm or more.