JPH0134079B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention cools the moisture contained in hot air passing through a rotating drum to obtain condensed water, and discharges this water to the outside of the machine and collects the air from which the moisture has been removed. This invention relates to a dehumidifying type clothes dryer that reheats clothes to dry them.

Structure and Problems of Conventional Example A conventional dehumidifying clothes dryer has a heat exchanger installed at the bottom of the main body, and further includes a circulation duct that connects the heat exchanger and the heating air cylinder, and a circulation duct that connects the heat exchanger and the fan case. It had many connecting parts, and separate fixing parts were used to maintain airtightness. In addition, the size of the product body becomes large due to the formation of the circulation path, making it impossible to make a compact product, and there are other problems such as the body size being set specifically for dehumidifying clothes dryers. In addition, there were other problems such as high temperature and humid circulating air easily leaking from the drain, condensing, and reducing the ability to recover water.

Purpose of the Invention The present invention solves these conventional problems, provides a structure that can easily obtain airtightness, minimizes the outer shell size of the main body, and allows hot and humid air to be removed from clothing. To provide a dehumidifying clothes dryer that improves the ability to recover exhaust gas after evaporating water as water.

Composition of the Invention The dehumidifying clothes dryer of the present invention has a generally L-shaped circulation duct that connects the discharge side of a fan case containing a fan and the intake side of a heat source, and the circulation duct has a generally rectangular shape. The circulation duct is placed between the inner surface of the corner at the bottom of the body and the outer peripheral surface of the rotating drum, and the circulation duct is fitted from the outside to the discharge side opening end of the fan case and the intake side opening end of the heat source, resulting in a compact product body. At the same time, the L-shaped circulation duct can have a large curvature at the bent portion, thereby reducing ventilation resistance. In addition, a drainage outlet is provided in the smallest cross-sectional area of the circulation duct,
In addition, by setting the minimum cross-sectional area where this drainage port is provided at the bottom of the circulation duct, the pressure can be set low at the minimum cross-sectional area, so the discharge of hot air containing moisture can be minimized. This makes it possible to improve the dehumidification ability.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In the figure, reference numeral 1 denotes a main body, in which a rotary drum 2 having a horizontally long central axis of rotation is rotatably arranged. 3 is Juan, 4
is a fan case that houses the fan 3 and communicates with the rear side of the rotating drum 2. Reference numeral 5 denotes a motor provided inside the upper surface of the main body 1, which can rotate the fan 3 via a fan belt 6a and rotate the rotary drum 2 via a drum belt 6b.

A roughly L-shaped circulation duct 7 is disposed in the space formed between the inner surface of one corner of the bottom of the roughly rectangular main body 1 and the outer circumferential surface of the cylindrical rotating drum 2, and a heat source that is a heat source is provided. A heated air cylinder 9 equipped with a body 8 is arranged in a substantially diagonal direction connecting the center of the rotating drum 2 and the bottom corner of the main body 1,
The discharge side opening is airtightly connected to a hot air suction hole 10 formed on the front wall side of the rotating drum 2. On the other hand, packing material 1 is attached to the opening end on the suction side.
1, one end of the circulation duct 7 is fitted from the outside and connected airtightly.

On the other hand, the other end of the approximately L-shaped circulation duct 7 is fitted from the outside into the discharge side opening end provided approximately vertically on the bottom corner side of the main body of the fan case 4 through a packing material 12. Connected airtight.

Further, this circulation duct 7 is provided with a drain port 13 in the smallest cross-sectional area, and at the same time, the drain port 13 is set at the lowest position of the circulation duct 7.

In the figure, arrow a indicates the flow of circulating air passing through the circulation duct 7, and arrow b indicates the flow of cooling air.

The operation in the above configuration will be explained. motor 14
By rotating the fan 3 and energizing the heating element 8, the air heated by the heating element 8 enters the rotating drum 2 as shown by arrow a, and the hot and humid air generated here is transferred to the fan. It flows on one side 3a of 3. On the other hand, as the fan 3 rotates, outside air flows in from the intake port 14 on the rear surface of the main body 1 as shown by arrow b, and flows through the other surface 3b of the fan. As a result, the entire fan 3 is cooled, and one side 3 of the fan 3 is cooled down.
Water droplets form on a. These water droplets are blown away by centrifugal force and stored in the fan case 4, pushed out by wind pressure and gravity in the direction in which the circulating air passes, and pass through the discharge side opening end of the fan case 4.
The water is led to the circulation duct 7 and drained out of the main body through a drain port 13 provided at the bottom of the circulation duct 7.

At the fitting part between the discharge side opening end of the fan case 4 in the substantially vertical direction and the circulation duct 7, the water droplets flow down the wall surface as if falling, so they do not flow into the fitting part against gravity and leak, creating an airtight seal. is easy to hold. On the other hand, even at the fitting part between the intake side opening end of the heating wind cylinder 9 and the circulation duct 7, the hot and humid circulating air does not completely dew due to the cooling effect of the fan 3, and the inner surface of the circulation duct and , dew condensation also occurs on the inner surface of the heating air cylinder 9, and as a result, the circulation duct 7
Since the water droplets flow toward the drain port of the heating air cylinder 9, the water droplets flow in the direction of entering the fitting part gap.
Compared to a structure in which the circulation duct 7 is fitted inside the intake-side open end of the valve, this structure can maintain airtightness more easily.

In addition, the approximately L-shaped circulation duct 7 has a larger curvature at its approximately L-shaped bent portion, the flow resistance can be minimized, and a more efficient circulation duct 7 can be set. By providing the circulation duct 7 in the diagonal direction of the main body 1, which is the direction of the space formed on the outer peripheral surface of the drum and the inner surface of the corner of the main body, the length of the curved part of the circulation duct 7 can be maximized. becomes possible,
A highly efficient circulation duct 7 with little loss can be constructed within a limited body size, allowing a compact product body.

Furthermore, the flow velocity of the air flowing through the circulation path increases at the minimum cross-sectional area of the circulation duct 7, but the pressure decreases. Since the amount of circulating air can be set to the minimum, the amount of water collected as water droplets can be increased, which has the effect of reducing the amount of humid air discharged outside the main body, which is the original purpose of a dehumidifying dryer. Since the circulation duct 7 must collect the condensed water droplets using the force of gravity and discharge them to the outside of the main body, it is necessarily necessary to provide a slope. Therefore, by setting the minimum cross-sectional area portion where the drain port 13 is provided at the lowest portion of the circulation duct 7, drainage can be efficiently carried out.

Effects of the Invention As is clear from the above description, according to the present invention, airtightness is easily maintained, water droplets are difficult to enter into the gap between the fitting parts, and a highly efficient circulation duct with less loss is formed in a limited body. Furthermore, the amount of water collected as water droplets can be increased and the amount of moisture discharged outside the main body can be reduced.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a dehumidifying clothes dryer showing an embodiment of the present invention, Fig. 2 is a partially enlarged sectional view showing the connecting part of the circulation duct, and Fig. 3 is a main body, heating air cylinder, and circulation duct. The arrangement of the ducts is shown; Figure A is a front view;
FIG. 4B is a bottom view, and FIG. 4 is a back view showing the connection between the fan case and the circulation duct. 1...Main body, 2...Rotating drum, 3...Fan, 7...Circulation duct, 8...Heating element, 9...Heating air cylinder.

Claims (1)

[Scope of Claims] 1. A main body having a substantially rectangular parallelepiped shape, a rotating drum disposed within the main body with a horizontal axis as the center of rotation,
A heating air cylinder that houses a heat source is placed on the front side of the rotating drum, and a heated air cylinder that is placed on the back side of the rotating drum draws hot air that has passed through the heat source into the rotating drum through a rotating operation and provides it with a drying effect. A fan case housing a fan for discharging hot air out of the rotating drum, and both ends of the heated air cylinder are removably airtightly fitted to both the suction side opening end of the heating air cylinder and the discharge side opening end of the fan case through packing material. A hot air circulation path consisting of a combined circulation duct and a hot air circulation path, the circulation duct having a substantially L-shape with a curvature at a bent portion,
A dehumidifying clothes dryer in which the communication side to the fan case is located in a substantially vertical direction, and the dehumidifying clothes dryer is disposed between the inner surface of one corner of the bottom of the main body and the outer peripheral surface of the rotating drum. 2. The dehumidifying clothes dryer according to claim 1, wherein the circulation duct is provided with a condensed water discharge port located at the bottom of the portion where the cross-sectional opening area is the smallest.