JPH0356758B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a clothes dryer in which a drum serving as a drying chamber is rotated.

(b) Prior art This type of clothes dryer is, for example,
A similar structure shown in the above publication will be explained based on FIG.

Reference numeral 51 denotes a metal frame of the clothes dryer, and metal front plates 52 and rear plates 53 are fixed to the front and rear opening edges, respectively. 54 is an annular drum support plate located at the front inside 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 . The drum 56 also has hot air outlets 57 formed radially on the rear surface. 58 is a partition plate 55
A circulation casing is fixed to the front side of the circulation casing, and a ventilation hole 59 is formed in the front side and 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 rotary 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.

65 is 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 facing the hot air inlet 66 and a dehumidifier 68.
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.

Now, to explain the installation of the machine frame 51, front plate 52, drum support plate 54, and circulation path 65, as shown in FIG. 4, a flange 73 is provided on the front opening edge of the machine frame 51, and A flange 74 is provided at , and the flanges 73 and 74 are brought together and secured with screws 75 . And the front plate 5
The circulation path 65 for fixing the drum support plate 54 with screws around the clothes input port 2 is connected to the drum support plate 54 with screws 7.
7 Stop. Note that the circulation path 65 is appropriately secured within the machine frame 51. Further, the screws 76 are covered with a suitable sheet (not shown).

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 outlet 57...one vent 59...one casing 58, The water is dehumidified by the dehumidifier 68, drained from the drain hole 71, returned to the heater 67, and circulated thereafter. During this time, the seal member 64 is in sliding contact with the casing 58.

Therefore, when enough clothes are placed in the drum 56, the clothes that are twisted during rotation may force the front side of the drum 56 forward. Then, the force is transmitted to the front plate 52, and if the front plate 52 is made of resin, the front plate 52 will flex, especially in the upper part, causing the drum 56 to fall off from the drum support plate 54, and clothes to be caught. , causing high-humidity dry air to leak into the cabin (condensation inside the cabin). Therefore, in this conventional example, not only the drum support plate 54 but also the front plate 52
It was necessary to strengthen the steel by making it thicker, which made it difficult to reduce costs. Furthermore, static electricity generated during rotation could not be removed when the front plate 52 was made of resin.

(c) Questions and Answers to be Solved by the Invention The present invention aims to ensure strength when the front plate is made of resin, and to facilitate the extraction of generated static electricity.

(d) Means for solving the problem The solution according to the present invention is to fix front and rear plates made of resin to the front and rear of a metal machine frame in which a drum is housed, and to close the front opening edge of the drum. A rotatably supported metal drum support plate is fixed to the front plate and the machine frame.

(E) Function: In other words, the machine frame, front plate, and drum support plate are fixed to each other to ensure strength as one rigid structure.
The generated static electricity is led to the machine frame from the metal drum support plate.

(F) Embodiment To explain based on FIGS. 1 and 2, 1 is a metal frame of a clothes dryer, flanges 2, 2 are formed on the front and rear opening edges, and the flanges 2, 2 are A front plate 3 made of resin and a rear plate 4 made of metal are fixed to the plate with screws. 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, and the partition plate 7 is constructed and fixed to both sides of the machine frame 1, and has a plurality of ventilation holes 9 radially extending from the center. is installed.

Reference numeral 10 denotes a long support shaft which is inserted through the center of the partition plate 8 from the front and back directions and is fixed thereto, and its rear end is connected to a boss 11 in the center of the rear plate 4 which bulges out to the rear by means of bolts 12 and washers 12. It's stuck.

Reference numeral 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 with felt 15. Further, a bearing 16 is individually attached to the center of the rear surface of the drum 13, rotatably inserted into the front end of the support shaft 10, and secured by a bolt 17 and a washer 18.
Further, 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 chamber 20, and is in sliding contact with the front surface of the partition plate 8.

Reference numeral 22 denotes a circulation path that communicates with a hot air inlet 23 formed on the lower left side of the drum support plate 7 and a vent 9 of the partition plate 8 from the rear side of the plate. 24
It consists of an L-shaped duct 25 fixed to the drum support plate 7, and a cylindrical sequential ring casing 26 airtightly covered and fixed to the rear surface of the partition plate 8. The circulation casing 26 is a resin molded product,
A 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, and the duct 25 has a drain hole 28 extending vertically from the bottom thereof to the outside of the machine.

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 rotary 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 belt and a boley including an idler boley, and the boley and fan 32 are rotated via 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 peripheral surface of the hot air outlet 19, and a cover 40 on top of this. A removably secured second mesh filter 4
Consists of 1.

During drying work, power is supplied to the motor 34 and heater 24 to rotate the fan 32 and drum 13.
Thus, the drying air heated by the heater 24 is transmitted through the hot air inlet 23 - drum 13 - filter device 38 - hot air outlet 19 - vent 9 - fan 32 - circulation casing 26 - circulation pipe 27 - duct 25 - heater 24
The clothes in the drum 13 are circulated in this order to dry them.
On the other hand, outside air is inlet 36 - cooling casing 29 -
It flows in the order of fan 32 - cooling pipe 30 - exhaust port 31 .

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.

Here, the fixing structure of the machine frame 1, front plate 3, drum support plate 7, and duct 25 will be explained. The upper part and both sides of the drum support plate 7 have flanges 42...
They are formed in an overhanging manner and overlap the flanges 2 of the machine frame 1, respectively. Then, screws 44 are secured to short bosses 43 protruding from the front plate 3 in an overlapping state. Another long boss 45 is provided protruding from the upper center and both sides of the front plate 3, and comes into contact with the drum support plate 7. The contact positions of the long bosses 45 are the respective flanges 42...
This is a position close to , and here the front plate 3 and drum support plate 7 are fixed with screws 46. The duct 25 is fixed to the drum support plate 7 with screws 47, 47.

In this way, the machine frame 1, the front plate 3, and the drum support plate 7 are fixed to each other to form one rigid body, and even if the front plate 3 is a resin molded product, sufficient strength can be ensured. Further, static electricity generated during the drying operation inside the drum 13 is quickly led out from the metal drum support plate 7 to the metal machine frame 1 via the fixing portions of the screws 44 .

In this embodiment, the three parts are fastened at the same time and at the same location using screws 44...
Since the front plate 3 and the drum support plate 7 are fastened to each other by screws 46 at different locations near the drum support edge, the three can be extremely connected.

(G) Effects of the Invention According to the present invention, the machine frame, the front plate, and the drum support plate are made into rigid structures to ensure strength.
The front plate can be made of resin. Also,
Even though the front plate is made of resin, the generated static electricity can be conducted from the drum support plate to the machine frame. Therefore, it is possible to provide a clothes dryer that is inexpensive and gives the user a sense of security.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a clothes dryer according to the present invention;
2 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a side sectional view of the conventional example, and FIG. 4 is a sectional view taken along the line AA in FIG. 3. 1...Machine frame, 2...Flange, 3...Front plate,
7...Drum support board, 13...Drum, 42...
Flange, 43... Short boss, 44... Screw, 45
...Long boss, 46...Bis.

Claims (1)

[Claims] 1. In a case where a drum serving as a drying chamber is rotatably arranged within a metal machine frame, resin front and rear plates are fixed to the front and rear of the machine frame, and the front opening edge of the drum is fixed. A clothes dryer characterized in that a metal drum support plate that rotatably supports the clothes dryer is fixed to the front plate and the machine frame.