JPS6217036Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a clothes dryer, and more particularly to a clothes dryer in which air exiting from a drum is dehumidified through a heat exchanger and returned to the drum.

Conventional clothes dryers of this type were developed in 1983, for example.
As shown in Japanese Patent No. 85694, the fan casing located behind the drum was constructed by combining two plates, and the outlet of the fan casing and the heat exchanger were connected through a duct.
This not only increases the number of parts, but also has the disadvantage that it is troublesome to assemble, as both ends of the duct must be fitted together. In addition, in conventional clothes dryers, the rear end of the drum is rotatably supported relative to the front part of the fan casing, as shown in, for example, Japanese Unexamined Patent Publication No. 51-30658.
Since the rear part of the fan casing is attached to a support plate that bridges the rear opening of the outer box, the weight of the drum and assembly errors may cause misalignment between the front and rear plates that make up the fan casing. If there is a misalignment between the fan casing and the support plate, there is a risk that the axis of rotation of the drum relative to the outer box body will be misaligned, making it impossible to rotate smoothly. For this reason, particular precision was required in the manufacture of the fan casing, and great care was also required in its assembly and adjustment.

This invention solves the above-mentioned conventional drawbacks, and provides a clothes dryer that has a small number of parts, can be easily assembled, and has a smooth drum rotation.

This invention will be explained in detail below with reference to drawings that embody it. In the figure, reference numeral 1 denotes an outer box of a clothes dryer, which is box-shaped with an open rear surface, and a rear lid 2 is removably attached to cover the rear opening. It also has a clothes drying inlet 4 covered by a door 3 on the front surface so as to be openable and closable.

Reference numeral 5 denotes a drum, which is rotatably supported by having its front opening aligned with the outer periphery of the clothes input port 4, and its shaft 6 protruding from its rear surface being fitted into bearings 7 of a support plate 21, which will be described later. The drum 5 has a large number of hot air inflow holes 8 around the front opening, and a through hole 9 in the center of the rear surface.
have each. A hot air guide plate 10 is fixed to the inner surface of the front wall of the outer box 1 facing the hot air introduction hole 8, and a seal member 11 such as felt is used to seal between the outer periphery and the drum 5. A hot air duct 12 has a built-in heater 13, and one end thereof communicates with the hot air guide plate 10.

A heat exchanger 14 is composed of a pipe having a large number of heat radiation fins, and its front end is communicated with the other end of the hot air duct 12 via an intermediary duct 15. The intermediate duct 15 has a drain port 15a on its bottom surface for discharging water condensed in the heat exchanger 14 to the outside. 1
6 is a cross-flow type fan, and a fan cover 17 that covers the outer periphery of the fan is extended to form the heat exchanger 1.
It is covered by 4. The rotation of the fan 16 sucks in outside air from the intake port 18 on the top surface of the outer box 1 through the filter 19, cools each pipe of the heat exchanger 14, and discharges it outside from the exhaust port 20, which is different from a normal heat exchanger. The same is true.

Reference numeral 21 denotes a support plate that bridges the rear opening of the outer box 1, and has both ends fixed to a flange 1a bent at the inner periphery of the rear opening of the outer box with screws or the like. The support plate 21 is formed by drawing a portion 21a facing the through hole 9 of the drum 5 into a bowl shape that protrudes toward the drum to form the front side of the fan casing, and furthermore, an opening 21b serving as a suction port is provided on the front surface of the support plate 21. There is. 22 is a plate-shaped member that bridges the support plate 21 and the heat exchanger 14, and has one end attached to the edge of the support plate 21 above the front part of the fan casing, and the other end attached to the lower edge of the rear surface of the heat exchanger 14. They are stacked and fixed. 23
is the fan casing front part 21a and the plate member 2
2 and the heat exchanger 14, and covers the rear surfaces of the heat exchanger 14 and the respective parts 21a,
A peripheral wall 23a bent toward the 22 and 14 sides is connected to each of these parts. Therefore, especially the peripheral wall 23a of the portion corresponding to the fan casing front portion 21a.
The front portion 21a and the cover 23 form a spiral shape.
The lower circular part 23b of the cover 23 forms one fan casing, and the upper part 23c of the cover 23 and the plate member 22 form a flat fan casing for communicating the blowing side of the fan casing to the rear surface of the heat exchanger 14. Form a duct.

36 is a centrifugal fan housed in a fan casing, with a shaft 2 rotatably supported on the cover 23.
It is fixed to the front end of 4. A pulley 25 is fixed to the rear end of the shaft 24.

A sealing member 26, such as felt, is placed on the rear surface of the drum 5 so as to surround the through hole 9, and its tip is slidably in contact with the outer periphery of the fan casing front portion 17a. 27 and 28 are filters that cover the through hole 9 from inside the drum 5, and 29 is a filter guard.

Reference numeral 30 denotes a motor, and the drum 5 is driven by a belt (not shown) hooked around a pulley at one end of its shaft and the outer periphery of the drum 5, as in a normal clothes dryer. A belt 33 is applied to the pulley 31 at the other end of the shaft and a pulley 32 of the fan 16, and a belt 35 is applied to the other pulley 34 of the fan 16 and the pulley 25 of the fan 36, thereby driving each of the fans 16 and 36 simultaneously. . As the fan 36 rotates, moist air inside the drum 5 is sucked into the heat exchanger 14 through the duct.
After being dehumidified, it is passed through the heater 13 and returned to the drum 5, and the cycle is repeated.

As described above, this invention rotatably supports the rear end of the drum against a horizontally long support plate installed across the rear opening of the outer box, and connects the support plate with one side of the heat exchanger. A plate-like member is installed across the support plate and the plate-like member, and long covers are installed vertically along the support plate and the plate-like member so as to cover the rear surfaces of both.
The lower part of the cover and the support plate form a fan casing, and the upper part of the cover and the plate-like member form a duct, so the structure is simple, and the support plate, plate-like member, and cover are stacked one after another. It can be easily assembled by simply installing it. Moreover, since the rear end of the drum is directly supported on the support plate without going through the fan casing,
Even if the mounting position of the plate-like member or the cover is misaligned with respect to the support plate, the rotational axis of the drum is not affected in any way, and the drum always rotates smoothly.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of a clothes dryer that embodies this idea, Figure 2 is a rear view with the rear cover removed and a portion cut away, and Figure 3 is an exploded perspective view of the support plate, plate-like member, and cover. It is a diagram. Explanation of symbols, 1...outer box, 5...drum, 14
... Heat exchanger, 21 ... Support plate, 22 ... Plate member, 23 ... Cover.

Claims (1)

[Claims for Utility Model Registration] A drum 5 rotatably provided in an outer box 1, and a fan 36 that is provided opposite to a through hole 9 on the rear surface of the drum 5 and that sucks air inside the drum 5. a casing, a heat exchanger 14 communicating with the discharge side of the fan casing via a duct and dehumidifying the air coming out of the drum 5; and a pipe line 15 returning the air coming out of the heat exchanger 14 into the drum 5. 12, a horizontally long support plate 21 is provided at the rear opening of the outer box 1.
At the same time, the support plate 21 is installed across the bridge.
The rear end of the drum 5 is rotatably supported, and a plate-like member 22 is attached to bridge between the support plate 21 and one side of the heat exchanger 14, and the support plate 21 and the plate-like member 22 are connected to each other. A vertically long cover 23 is attached so as to cover the rear surfaces of both of them, and the lower part 23b of the cover and the support plate 21 serve as the fan casing, and the upper part 23C of the cover and the plate member 22 serve as the duct. A clothes dryer characterized by: