JPS6141238B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a dryer that heats and dries clothes within a rotating drum.

(b) Prior art Some dryers of this type circulate drying air while dehumidifying it, and Japanese Utility Model Publication No. 57-54795 discloses a dryer in which a dehumidifier is individually incorporated in the circulation path. JP-A-58-109098 discloses a device using a heat exchange type double-sided fan instead of a dehumidifier. and,
Structures similar to these are shown in FIGS. 3 and 4, A and B, and will be described below.

In Figure 3, 51 is the machine frame of the clothes dryer.
A front plate 52 and a rear plate 53 are fixed to the front and rear opening edges, respectively. 54 is an annular drum support plate located at the front of the machine frame 1 and fixed to the front plate 52;
is a partition plate located at the rear of the machine frame 51 and installed on both sides of the machine frame.

Reference numeral 56 denotes a resin-molded drum, and its front opening edge is rotatably fitted to the outer peripheral edge of the drum support plate 54 . Further, the drum 56 has hot air outlets 57 radially formed on its rear surface. Reference numeral 58 denotes a circulation casing fixed to the front side of the partition plate 55. A ventilation hole 59 is bored in the front side of the circulation casing, a support shaft 60 is fixed thereto, and a rotary shaft 61 is rotatably supported on the rear surface. . The rear surface of the drum 56 is rotatably supported on the front end of the support shaft 60, a fan 62 in the casing is fixed on the front end of the rotating shaft 61, and a pulley 63 is fixed on the rear end.

64 is a sealing member made of felt or the like that is fixed to the rear surface of the drum 56 with adhesive or the like, and is in sliding contact with the front surface of the casing 58 to seal the hot air outlets 57 and the ventilation holes 5.
9...Separate the space.

Reference numeral 65 denotes a circulation path that communicates a hot air inlet 66 formed on the lower left side of the drum support plate 54 with the casing 58, and a honeycomb-shaped heater 67 consisting of a positive temperature coefficient thermistor and a dehumidifier 68 facing the hot air inlet 66.
It is equipped with

A motor 69 drives the drum 56, and transmits rotation to the pulley 63 via a belt 70.

71 is a drain hole located downstream of the dehumidifier 68 in the circulation path 65, and 72 is a filter device disposed in front of the hot air outlets 57.

Such a clothes dryer starts drying work by supplying power to the heater 67 and motor 69. The air inside the machine is circulated between the drum 56 and the circulation path 65, and the dry air heated by the heater 67 is passed through the hot air inlet 6.
The hot air enters the drum 56 from 6..., dries the clothes and absorbs moisture, and removes lint etc. from the clothes by a filter device 72, and moves in the order of hot air outlets 57...1 vent 59...1 casing 58. , dehumidified by the dehumidifier 68 and drained into the drain hole 71
The water is discharged from the tank, returns to the heater 67, and circulates thereafter.
During this time, the seal member is in sliding contact with the casing 58.

In such a conventional example, the support shaft 60 is supported by the casing 58, and the seal member 64 is in sliding contact with the casing 58, so it is necessary to ensure sufficient strength of the casing 58. It was difficult to use resin.

In the second conventional example shown in FIG.
8 can be made somewhat smaller. However, since the sealing member 64 comes into sliding contact with the casing 58, it is necessary to provide a certain degree of strength in consideration of wear.

In the second conventional example, the dehumidifier 68 is abolished, and a heat exchange type double-sided fan 73 is used instead. Therefore, a cooling casing 74 is disposed at the rear of the casing 58, communicating and connecting the casing 58 to the circulation path 65, and independently communicating the discharge pipe 75 of the cooling casing 74 to the exhaust port 76. In addition, intake ports 77 communicating with the cooling casing 74 are bored in the rear plate 53.

However, in the second conventional example, the partition plate 55 is located in front of the intake ports 7 as shown in FIG.
Intake air to the cooling side of the double-sided fan 73 was somewhat obstructed. This resulted in non-uniform air intake to the cooling side, reducing the heat exchange rate in the fan.

(c) Purpose of the Invention The present invention solves problems in strength by arranging a partition plate on the rear side of the drum to support the drum and make sliding contact with the sealing member. The purpose is to maintain a predetermined heat exchange efficiency by drawing in outside air uniformly.

(d) Structure of the Invention The present invention provides a metal partition plate installed on both sides of the machine frame behind the drum, and a support shaft is inserted into the partition plate in the front-rear direction and is fixed to the partition plate. The rear surface of the drum is rotatably supported in the rear part of the drum, and the fan is rotatably supported in the rear part of the support shaft. This clothes dryer is characterized in that a sealing member that slides on a partition plate is provided on the rear surface to partition a hot air port and a ventilation port. That is, since the support shaft is fixed to a metal partition plate and the seal member is brought into sliding contact with this partition plate, problems regarding strength can be solved.

(e) Embodiment To explain based on FIGS. 1 and 2, 1 is a metal machine frame of a clothes dryer, and flanges 2, 2 are formed on the front and rear opening edges. A front plate 2 made of resin and a rear plate 4 made of metal are fixed to the plate. Reference numeral 5 denotes a clothing entrance formed in the front plate 3; 6 a door for opening and closing this entrance; 7 a metal annular ring located at the front of the machine frame 1 and fixed to the machine frame 1 and the front plate 3; A drum support plate 8 is a metal partition plate placed at the rear inside the machine frame 1. Here, the drum support plate 7 and the partition plate 8 are made of thick sheet metal,
The partition plate 7 is installed and fixed on both sides of the machine frame 1, and has a plurality of ventilation holes 9 radially extending from the center thereof.

Reference numeral 10 denotes a long support shaft which is inserted and fixed in the central part of the partition plate 8 from the front and back directions, and its rear end is fixed to a boss 11 in the central part of the rear plate 4 that bulges out rearwards by means of bolts and washers 12. are doing.

13 is a resin-molded drum, and a drum ring 14 is attached to the front opening edge.
The inner peripheral edge of drum support plate 4 is rotatably fitted to the outer peripheral edge of drum support plate 7 via felt 15. A bearing 16 is fixed to the center of the rear surface of the drum 13, and this is rotatably inserted into the front end of the support shaft 10.
It is prevented from coming off by bolts 17 and washers 18. Furthermore, the drum 13 has a hot air outlet 19 formed of a large number of through holes or radial slits on its rear surface, and an annular wall 20 protruding from the drum 13 so as to surround the outlet group. Reference numeral 21 denotes a sealing member made of felt or the like that is fixed with an adhesive or the like to an annular recess formed on the rear side of the annular wall 20, and is in sliding contact with the front surface of the partition plate 8.

Reference numeral 22 denotes a circulation path that connects the hot air inlet 23 formed on the lower left side of the drum support plate 7 to the ventilation port 9 of the partition plate 8 from the rear side of the plate. Heater 2
4, an L-shaped duct 25 fixed to the drum support plate 7, and a cylindrical circulation casing 26 airtightly covered and fixed to the rear surface of the partition plate 8. The circulation casing 26 is a resin molded product, and the downward circulation pipe 27 is integrally formed, and is connected and communicated with the duct 25 at the inner bottom of the machine frame 1.
The duct 25 has a drain hole 28 at the bottom that protrudes outside the machine.
is installed vertically.

Reference numeral 29 denotes a resin cooling casing of almost the same shape that is fixed to the rear side of the circulation casing 26 so as to be continuous with it, and integrally forms a downward exhaust pipe 30 separated from the circulation pipe 27. It communicates with the exhaust port 31 on the bottom. The rear portions of the cooling casing 29 and the exhaust pipe 30 are covered by the rear plate 4.

Reference numeral 32 denotes a heat exchange type double-sided fan disposed across the circulation casing 26 and the cooling casing 29, and is rotatably supported at the rear of the support shaft 10 via metal. Reference numeral 33 denotes a rotation transmission pulley connected to the fan 32.

34 is a motor installed at the inner bottom of the machine frame 1;
The drum 13 is rotated by a pulley including an idler pulley and a belt, and the pulley and fan 32 are rotated by a belt 35.

Reference numerals 36, . . . indicate intake ports radially formed in the central bulge of the rear plate 4, and 37, a cover formed in a bulge on the rear plate 4 to cover the portion where the belt 35 is stretched.

38 is a filter device installed from the inside so as to cover the hot air outlet 19 on the rear surface of the drum 13, and includes a mesh-like first filter 39 screwed to the inner surface of the hot air outlet 19, and a cover 40 on top of this. It consists of a second removable filter 41 that is removably fixed.

During drying work, power is supplied to the motor 34 and heater 24 to rotate the fan 32 and drum 13. Therefore, the drying air heated by the heater 24 is
Hot air inlet 23 - drum 13 - filter device 38
The hot air circulates in the order of - hot air outlet 19 - vent 9 - fan 32 - circulation casing 26 - circulation pipe 27 - duct 25 - heater 24 to dry the clothes in drum 13. On the other hand, the outside air is from the intake port 36 to the cooling casing 2.
9 - fan 32 - cooling pipe 30 - exhaust port 31 in this order.

Then, heat exchange is performed between the front and rear surfaces of the fan 32, and the drying air discharges moisture from the clothes in the duct 25 and discharges it as drain from the drain hole 28.
The humidity itself is lowered and circulated.

The sealing member 21 rotates together with the drum 13 and comes into sliding contact with the front surface of the partition plate 8, and performs a sealing function against drying air. Further, lint and the like coming out of the clothes are removed by a filter device 38.

The partition plate 8 firmly fixed to the machine frame 1 in this way
Since the support shaft 10 is fixed to the partition plate 8 and the seal member 21 is brought into sliding contact with the partition plate 8, the strength problem is solved.
The problem of wear is also eliminated, and the casing 26 can be made of a resin molded product as in the embodiment. Furthermore, when the double-sided fan 32 is used as in this embodiment, the partition plate 8 does not obstruct the intake air on the cooling side, so that the heat exchange efficiency can be maintained by uniform intake air.

(f) Effects of the Invention Since the present invention solves the strength problems and the wear problems, it is possible to provide a durable and inexpensive clothes dryer.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a clothes dryer according to the present invention;
2 is a rear view of the main parts, FIG. 3 is a side sectional view of the first conventional example, and FIGS. 4A and 4B are a side sectional view and a rear view of the main parts of the second conventional example. 1...Machine frame, 8...Partition plate, 9...Vent, 1
0...Spindle, 13...Drum, 19...Hot air outlet (hot air port), 21...Seal member, 26...Circulation casing, 32...Double-sided fan.

Claims (1)

[Claims] 1. In a system in which a drum is rotatably mounted within the machine frame and hot air is moved in and out of the drum using a fan, a metal partition plate installed on both sides of the machine frame is provided behind the drum, A support shaft is inserted into this partition plate in the front-rear direction and fixed, and the rear surface of the drum is rotatably supported at the front of the support shaft, and the fan is rotatably supported at the rear of the support shaft. The partition plate is provided with a vent that faces the hot air vent on the rear surface of the drum, and a sealing member that slides into contact with the partition plate is provided on the rear surface of the drum to partition the hot air vent and the vent. Clothes dryer.