JPH0356760B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust duct device for a clothes dryer that exhausts moist air after drying to the outside of the main body.
To efficiently and inexpensively provide an exhaust duct that has an insulating effect to prevent condensation from condensing inside the duct when the outside air is cold, turning into water droplets, falling outside the main unit, and causing damage to the floor. It is.

FIG. 1 and FIG. 2 show an example of a conventionally known general rotary clothes dryer. 1 is the exterior, 2
is an input lid that can be opened and closed freely. Drum 3 is exterior 1
It is rotatably installed. When the input port lid 2 is opened, the clothes to be dried (not shown) are put in, and the switch 4 is operated, the drum 3 is rotated by the motor 5 via the V-belt 6, and the clothes to be dried are agitated. On the other hand, by rotating the fan 8 via the round belt 7 by the motor 5, air is sucked from the intake port 9, passes through the intake opening 11 of the heater box 10, and is passed through the heater box 10.
2, heated air is introduced into the drum 3 through the drum intake port 13. Here, the air comes into contact with the clothes to be dried, evaporates water, becomes moist air, and after removing dust such as lint with a filter 14, it is exhausted out of the main body through an exhaust duct 15 and an exhaust port 16. This is how you dry your clothes. At this time, the relative humidity of the air that has absorbed the moisture from the clothes is approximately 100%, so when it is cooled while passing through the exhaust duct 15, dew condensation occurs on the inner wall of the exhaust duct 15. These water droplets drip from the gap between the exhaust duct 15 and the fan case 17 or the gap in the fan case 17, flow out of the main body, and cause damage by wetting the floor surface on which the dryer is placed. This phenomenon is noticeable when the exhaust duct 15 is in direct contact with the outside air, and when the outside air is cold and has high relative humidity. In order to prevent this moisture from condensing in the exhaust duct 15 and to retain the condensed water, attaching a heat insulating material 18 to the inner surface of the exhaust duct 15 can prevent water droplets from dripping. It takes time and effort to attach the heat insulating material 18 to the inner wall of the heat insulating material 15, and the cost of the heat insulating material 18 is high, making it difficult to obtain a material with good heat insulating performance and low cost.

The present invention attempts to improve the above-mentioned conventional problems. One embodiment will be described with reference to FIGS. 3 to 6. The configuration of the exhaust duct is different from the conventional example shown in FIGS. 1 and 2, and the exhaust duct 19
has double walls, with an air layer 19a between them.
is provided. If the thickness of this air layer 19a is too thin, the insulation effect will be small, and if it is too thick, the air layer 1
Convection occurs in 9a, reducing the insulation effect.

Furthermore, when forming a double wall, it is necessary to prevent the walls from coming close to each other and making it impossible to form a double wall. Taking these into consideration, the thickness of the air layer 19a is preferably 2 to 6 mm.

As shown in FIG. 5, the double-wall exhaust duct 19 is divided into a duct 20 and a duct 21, each of which is blow-molded with synthetic resin (for example, polypropylene) to form a double wall. The parts are joined together, and a claw 23 is formed at the end of a thin part 22 having a hinge action as shown in FIG. 6 on one of the parts.
A locking portion 24 to which the claw 23 is locked is provided on the other side, and this is used to secure the ducts 20 and 21, thereby forming a double-walled exhaust duct 19.

As described above, the exhaust duct device for a clothes dryer according to the present invention has a double wall type exhaust duct.
The air layer provides a heat insulating effect and prevents dew condensation within the exhaust duct. Since the double-walled exhaust duct provides a heat insulating effect due to the air layer, there is no need to attach any heat insulating material, and a duct with good heat insulating performance can be obtained at low cost. In addition, if you divide it into two and form an exhaust duct,
It is easy to form a double-walled duct,
Furthermore, when forming it in two parts, the two parts can be easily joined and fixed by providing a fixing claw on one side and a locking part for locking this on the other side.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional clothes dryer, Fig. 2 is a perspective view of the same exhaust duct, Fig. 3 is a perspective view of an exhaust duct showing an embodiment of the present invention, and Fig. 4 is the same cross section. FIG. 5 is an exploded perspective view of the same, and FIG. 6 is a perspective view of the essential parts. 19...Exhaust duct, 19a...Air layer.

Claims (1)

[Claims] 1. An exhaust duct that exhausts moist air after drying to the outside of the main body is formed with a double wall made of synthetic resin, and the exhaust duct is divided into two parts, each of which is joined, with a hinged claw on one side and a hinged claw on the other. An exhaust duct device for a clothes dryer that is equipped with a locking part that locks a claw.