JP2744079B2 - Clothes dryer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a clothes dryer, and more particularly to a dust collector for collecting lint, cloth, and the like generated in a drying drum.

[Conventional technology]

The clothes dryer includes a drying drum rotatably supported in a machine frame so as to accommodate a material to be dried, a driving device for rotating the drying drum, and flowing air through a ventilation path including the drying drum. A blower, a heating device for heating the air flowing through the drying drum, and a filter cover detachably provided to cover the inside of the air outlet of the drying drum and forming a dust collection chamber inside the air outlet. And guiding the air in the drying drum from the ventilation window formed in the filter cover to the air outlet through the dust collection chamber,
The lint filter provided here is configured to collect lint, dust and the like in the circulating air.

FIG. 6 shows a dust collecting unit of a conventional clothes dryer of this kind, wherein 1 is a drying drum having an air outlet 1a, 2 is a drum bearing, 3 is a fan cage having an air inlet 3a, 4
Is a heat exchange type screen fan, 5 is a fan bearing, and the drying drum 1 and the screen fan 4 are driven by a belt (not shown) to rotate. Air outlet 1a of drying drum 1
The back filter 6 is screwed and fixed, and a lint filter 8 juxtaposed inside the back filter 6 is sandwiched between the back filter 6 and a detachable bowl-shaped filter cover 9 to form a dust collecting chamber. Configuration. A ventilation window 9a is provided at the center of the filter cover 9, and the air in the drying drum enters the dust collecting chamber through the ventilation window 9a.

Since the lint filter 8 is generally clogged after several drying operations, it must be cleaned frequently. However, in this cleaning work, the user puts his hand into the drying drum from the clothing entrance of the drying drum 1 to remove the filter cover 9 and the lint filter 8 and removes the lint filter 8 and scrapes lint and dust attached to the lint filter 8. This is a work of engaging and holding the filter cover 9 with the lint filter 8 being again put on the back filter 6.
It was troublesome, and the lint and cloth dust scattered around and was unsanitary.

Also, if the area of the lint filter 8 is increased to reduce clogging in order to lengthen the interval at which the cleaning operation of the lint filter 8 is performed, the filter cover 9 becomes large, and the material to be dried in the drying drum is stored. There is a problem that space is reduced.

In addition, as this type of clothes dryer, Jikken Sho 51-3002
No. 5 and JP-A-59-129099.

[Problems to be solved by the invention]

As described above, in the conventional clothes dryer, the lint filter that collects lint, dust and the like is quickly clogged, and the cleaning operation for recovering the lint filter is troublesome and unsanitary.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hygienic clothes dryer that is relatively small, hardly clogged, and can be easily clogged.

[Means for solving the problem]

In order to achieve this object, a drum rotatably supported in a machine frame so as to accommodate a material to be dried, a driving device for rotating the drum, and flowing air through an air passage including the drum. A blower, a heating device for heating air flowing through the drum, a back filter provided at an air outlet of the drum, and an air outlet detachably provided to cover the inside of the air outlet of the drum. A filter cover that forms a dust collection chamber inside, a clothes dryer that guides the air in the drum from the ventilation window formed in the filter cover to the air outlet through the dust collection chamber, According to a first aspect of the present invention, a disposable dust bag formed by connecting the peripheries of two ventilation members larger than an area of a ventilation window of the filter cover is accommodated in the dust collection chamber so as to spread. And a window with a mounting edge provided on the one ventilation member is detachably attached to the inside of the periphery of the ventilation window,
The bulge of the two ventilation members of the disposable dust collecting bag at the time of dust absorption is received by the inner surfaces of the back filter and the filter cover. A disposable dust bag that is connected to the ventilation window of the filter cover and is detachable so as to spread into the dust collecting chamber; and a net filter that extends from the periphery of the ventilation window into the disposable dust bag. Features.

[Action]

According to the first invention, when the dust collecting device is clogged, the clogging can be recovered by removing the filter cover and replacing the disposable dust collecting bag outside the machine, so that the clogging recovery operation is simple. It is sanitary, and the disposable dust bag is formed by connecting the peripheries of two ventilation members that are larger than the area of the ventilation window of the filter cover. The dust collecting ability can be obtained, and the excessive expansion of the dust collecting bag made of a relatively weak material such as a non-woven fabric can be suppressed by the inner surfaces of the back filter and the filter cover, thereby preventing breakage.

Further, according to the second invention, since the net filter generates a force for pushing lint and dust into the outer peripheral portion in the disposable dust bag, lint and dust and the like are contained in the disposable dust bag. Can be efficiently accommodated.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a vertical sectional side view of a clothes dryer according to the present invention. The drying drum 1 has an air outlet 1a formed by a large number of holes in a rear end plate and an engagement window 1b in a front end plate.
The drum bearing 2 attached to the machine frame 10 is the drying drum 1
The drum end plate is also rotatably supported, and an annular drum support plate 11 also attached to the machine frame 10 is slidably engaged inside the engagement window 1b of the front end plate of the drying drum 1. The drying drum 1 is rotatably supported. And the drying drum 1
Is driven to rotate by a drive motor 12 via a belt 13.

In the center of the drum support plate 11, a clothes entrance / exit frame 14 that penetrates through the machine frame 10 and communicates the inside of the drying drum 1 with the outside of the machine frame.
A door 15 for opening and closing the entrance is provided at an outer end of the clothing entrance frame 14.

The fan casing 3 for accommodating the screen fan 4 is fixed to the machine frame 10 and has an air inlet 3a facing the air outlet 1a of the drying drum 1. The screen fan 4 rotatably supported by the fan bearing 5 is connected to the drive motor via a belt 17.
The air is sucked from the drying drum 1 on its inner surface and sent out to the circulation path 18. Further, the outer surface of the screen fan 4 sucks outside air from a cooling air inlet 19a provided in the back cover 19 to cool the screen fan 4 and cool the cooling fan outlet 19b,
Discharge outside the machine frame from 19c.

A drain port 18a is provided in the middle of the circulation path 18, and the end is a hot air inlet 11a provided at a lower portion of the drum support plate 11.
Is in communication with Also, the hot air inlet
A honeycomb-shaped heater 20 is provided opposite to 11a. The resistance change characteristic of the heater 20 is a positive characteristic corresponding to a temperature change, and has a characteristic of self-controlling the heat generation temperature.

Inside the air outlet 1a of the drying drum 1, a back filter 6 is screwed and fixed, and a bowl-shaped filter cover 9 which detachably engages with the back filter frame 6a in the drying drum to form a dust collecting chamber is provided. Can be A disposable dust-collecting bag 21 extending in the dust-collecting chamber is detachably attached to the inside of the periphery of the ventilation window 9a of the filter cover 9.

As shown in FIGS. 2 to 4, the disposable dust bag 21 is formed by bonding or stitching the edges of two ventilation members 21a and 21b having an area larger than the area of the ventilation window 9a of the filter cover 9. A window 21e with an adhesive edge frame formed of a thick fixed edge plate 21d which is detachably attached to the inside of the periphery of the ventilation window 9a with a screen adhesive sheet 21c, is provided on one of the ventilation members 21a. It is. The ventilation members 21a, 21b
It is preferable to use a nonwoven fabric of a chemical fiber material, a woven fabric of raised fiber, a filter paper resistant to moisture, or the like.

A temperature sensor 22 provided facing the air inlet 3a of the fan casing 3 converts the temperature of the air discharged from the drying drum 1 into an electric signal and outputs the electric signal.

In the above-mentioned clothes dryer, clothes to be dried are opened into the drying drum 1 through the clothes doorway by opening the door 15. The heater 20 is energized while operating the drive motor 12 to rotate the drying drum 1 and the double-sided fan 4. As a result, the air in the drying drum 1 is sucked by the inner surface of the double-sided fan 5 through the ventilation window 9a of the filter cover 9 and the air outlet 1a and sent out to the circulation path 18, where it is heated by the heater 20 and heated by the hot air inlet 11a. To return to the inside of the drying drum 1. The clothes in the drying drum 1 are exposed to hot air while being unraveled by the rotation of the drying drum 1 to evaporate water.
The hot and humid hot air containing a large amount of water contacts the screen fan 4 cooled by the outside air during the circulation and is cooled to condense the water. The water generated by the condensation is
The water is discharged out of the machine from a drain port 18a provided in the circulation path 18.

As the clothes in the drying drum 1 dries in this manner, lint and dust adhering to the clothes are separated from the clothes and mixed into the circulating air. Collected in. In the disposable dust collecting bag 21, the two ventilation members 21a and 21b expand in the use state to provide a large ventilation surface, so that the clogging progress speed can be significantly reduced.

As the disposable dust bag 21 becomes more clogged, the amount of circulating air decreases and the amount of heat generated by the heater 20 decreases. A control circuit (not shown) monitors the magnitude of the load current of the heater 20 to detect the degree of the clogging, and displays the buzzer or lamp when the clogging reaches an allowable limit state.

In the replacement work of the disposable dust collecting bag 21, the filter cover 9 is removed and the dust collecting bag 21 is taken out of the drying drum 1 through the entrance.
At this time, the disposable dust bag 21 attached to the inside of the filter cover 9 is also taken out. In this state, the disposable dust collecting bag 21 is peeled off from the filter cover 9, and as shown in FIG. 4, a lid 21f is attached to the double-sided adhesive sheet 21c of the fixed edge plate 21d to close the window 21e, and is thrown away in a trash can. The lid 21f may use waste material cut off when forming the window 21e in the ventilation member 21a.

This eliminates the need for scraping off lint and dust and the like, so that the lint and dust are not scattered and sanitary.

As shown in FIG. 3, a new disposable dust collecting bag 21 is attached by attaching a fixed edge plate 21d with a double-sided adhesive sheet 21c to the inside of the periphery of the ventilation window 9a of the filter cover 9 outside the machine, and then attaching the filter. This is performed by engaging the cover 9 with the back filter frame 6a in the drying drum 1. The work of attaching the disposable dust collecting bag 21 to the filter cover 9 is performed outside the large machine, and the work inside the drying drum 1 is only to engage the filter cover 9 with the back filter frame 6a. The operation of replacing the dust bag 21 is extremely simple.

FIG. 5 shows an embodiment in which the clothes dryer described above is further improved so that more lint, cloth, and the like can be packed into the disposable dust bag 21.

In this embodiment, a coarse mesh filter 23 is integrally formed so as to extend from the edge of the ventilation window 9a of the filter cover 9 into the disposable dust bag 21.

In this manner, the clothing 24 that has entered the mesh filter 23 from the ventilation window 9a swings the mesh filter 23 in the radial direction, and removes lint, cloth, and the like in the disposable dust bag 21 from the disposable dust bag. It acts to push in the outer peripheral direction of 21, and can pack more lint, cloth dust, and the like.

〔The invention's effect〕

As described above, according to the first aspect of the invention, when the dust collecting device is clogged, the filter can be removed and the disposable dust bag can be replaced outside the machine to recover the clogging. Work easier and sanitary,
In addition, the disposable dust bag is formed by connecting the peripheries of two ventilation members larger than the area of the ventilation window of the filter cover, and spreads in the dust collection chamber when dust is collected, so that a small and large dust collection capability can be obtained. Can reduce the number of replacements, and can prevent the dust bag made of a relatively weak material such as non-woven fabric from expanding excessively on the inner surface of the back filter and filter cover to prevent its damage. .

Further, according to the second invention, the coarse mesh filter generates a force for pushing lint or dust into the outer periphery of the disposable dust bag, so that the mesh filter is efficiently placed in the disposable dust bag. Thread litter, dust, and the like can be stored, and the number of replacements of the disposable dust bag can be further reduced.

[Brief description of the drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a vertical sectional side view of a clothes dryer, FIG. 2 is a vertical sectional side view of a dust collecting unit, and FIGS. 3 and 4. FIG. 5 is an exploded side view showing a disposable dust collecting bag replacing operation, FIG. 5 is a vertical sectional side view showing another embodiment of the dust collecting unit, and FIG. 6 is a vertical sectional view of a dust collecting unit of a conventional clothes dryer. It is a side view. 1 ... drying drum, 1a ... air outlet, 3 ... fan casing, 3a ... intake port, 4 ... double-sided fan, 9 ... filter cover, 9a ... ventilation window, 10 ... machine frame, 12 ... ... drive motor, 14 ... clothing doorway frame, 18 ... circulation path, 20 ... heater, 21 ... disposable dust bag, 21c ... double-sided adhesive sheet, 23 ... mesh filter.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yukie Tateno 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture Inside the Taga Plant of Hitachi, Ltd. (72) Inventor Shin Nakamura 1-1-1, Higashitaga-cho, Hitachi City, Ibaraki Prefecture No. 1 Inside the Taga Plant of Hitachi, Ltd. (56) References JP-A-61-290998 (JP, A) JIN-SHO 47-8921 (JP, Y1)

Claims (3)

(57) [Claims] 1. A drum rotatably supported in a machine frame so as to accommodate a material to be dried, a driving device for rotating the drum, and a blowing device for flowing air through a ventilation passage including the drum. A heating device for heating the air flowing through the drum, a back filter provided at the air outlet of the drum, and a detachably provided so as to cover the inside of the air outlet of the drum; A filter cover forming a dust collecting chamber, wherein the air in the drum is guided from a ventilation window formed in the filter cover to the air outlet through the dust collecting chamber. In the room, a disposable dust bag formed by connecting the peripheries of two ventilation members larger than the area of the ventilation window of the filter cover is housed so as to spread, and the one ventilation portion is provided. A window with a mounting edge provided on the material is detachably attached to the inner side of the peripheral edge of the ventilation window so that the bulge of the two ventilation members of the disposable dust bag at the time of dust absorption is received by the inner surfaces of the back filter and the filter cover. A clothes dryer characterized by the following. 2. A drum rotatably supported in a machine frame so as to accommodate a material to be dried, a driving device for rotating the drum, and a blowing device for flowing air through a ventilation path including the drum. A heating device for heating the air flowing in the drum, and a filter cover detachably provided to cover the inside of the air outlet of the drum and forming a dust collection chamber inside the air outlet, In a clothes dryer configured to guide air in a drum from a ventilation window formed in the filter cover to the air outlet through the dust collection chamber, a ventilation window of the filter cover is provided on the dust collection chamber side of the filter cover. A disposable dust bag that is detachable so as to extend in the dust collecting chamber and a net filter that extends from the periphery of the ventilation window into the disposable dust bag are provided. And clothes dryer. 3. The disposable dust collection bag according to claim 2, wherein the disposable dust bag connects the peripheries of two ventilation members larger than an area of a ventilation window of the filter cover, and connects the one ventilation member to the one ventilation member. A window having an adhesive edge is provided on the inner periphery of the ventilation window, wherein the mesh filter extends into the disposable dust bag and is swingable in the disposable dust bag. Clothes dryer.