JPH0312200A - Garment drying machine - Google Patents

Abstract

PURPOSE:To improve ventilating ability by making the rotational center of a heat exchange fan eccentric to a whirling room. CONSTITUTION:A back panel 20 is fitted to cover the back of a main body 1 from the outside of a fitting panel 17 and a fan belt 8, the cooling side of a heat exchange fan 7, which is exposed on the back of the main body 1, is covered and the back panel 20 is also used as an air casing for cooling. Accordingly, a casing 9 is an air side casing for drying. By making a central point 24 of a whirling room 21 eccentric to a rotational center 26 of the heat exchange fan 7, the ara of a cross section for the duct of the whirling room 21 can be enlarged and the flow of air is made smooth. Then, the quantity reduction of pressure is decreased and the ventilating ability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a clothes dryer, and particularly to a heat exchange fan and casing that can blow air efficiently with little pressure loss.

[Conventional technology]

In the conventional structure, no consideration was given to the air blowing capacity as described in Japanese Patent Publication No. 59-66637.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take into account the cross-sectional area of the flow path of the swirl chamber, resulting in large pressure loss, and the air flow is not smooth, resulting in problems with the air blowing ability.

An object of the present invention is to increase the air blowing capacity.

[Means to solve the problem]

The above object is achieved by making the center of rotation of the heat exchange fan eccentric to the swirl chamber.

[Effect]

Because the center of rotation of the heat exchange fan is eccentric to the swirl chamber, the cross-sectional area of the swirl chamber can be expanded, resulting in smoother air flow and less pressure loss.
Air blowing capacity can be improved.

〔Example〕

An embodiment of the present invention will be described below.

In FIG. 1, 1 is the main body of the dryer, 2 is a rotary drum rotatably provided in the main body 1 and driven by a motor 3 via a drum belt 4, and 5 is a clothing input provided on the front of the main body 1. 6 is a heater that heats the dryer air flowing into the rotary drum 2; 7 is a heat exchange fan installed at the rear of the rotary drum 2, which has air blowing and heat exchange functions; Driven through.

A casing 9 is provided on the rear surface of the rotating drum 2, and has a rotating drum side intake port 1o in the center. 11 is a filter installed on the rear surface of the rotary drum 2 to remove lint, etc.; 17 is a mounting plate fixed on the rear surface of the main body 1; It has a function of being fixed to the main body 1. 20 is a back plate that covers the rear surface of the main body 1, 13 is a cooling-side intake port provided to draw outside cooling air into the heat exchange fan 7, and 19 is an exhaust port for exhausting outside cooling air after heat exchange to the outside of the main body 1. This is a cooling side exhaust port provided on the back plate 20. The back plate 2o described above is attached to cover the rear surface of the main body 1 from the outside of the mounting plate 17 and the fan belt 8, thereby covering the cooling side of the heat exchange fan 7 exposed on the rear surface of the main body 1, This back plate 20 also serves as a cooling air casing.

The casing 9 is therefore a drying air side casing. A partition plate 15 partitions the outer circumference of the heat exchange fan 7 into left and right sides to airtightly separate the drying side and the cooling side. Reference numeral 16 denotes a circulation duct, which carries the exhaust air from the circulation side of the casing 9 to the heater 6.
18 is a drain port for discharging condensed water generated by heat exchange in the heat exchange fan 7. During drying, the hot and humid circulating air is cooled by the heat exchange fan 7.

Due to the heat exchange, the moisture is condensed, and the dehumidified air is heated by the heater 6 and introduced into the rotating drum 2 again. Drying can proceed through the above drying cycle.

In FIG. 1, arrow A indicates the flow of circulating air, and arrow B indicates the flow of cooling air.

In the clothes dryer configured as described above, when the power is turned on, the motor 3 is driven, the rotary drum 2 containing the items to be dried rotates, and the heat exchange fan 7 is rotated at the same time. As a result, the hot and humid air inside the rotating drum 2 is drawn into the heat exchange fan 7 through the rotating drum side intake port 10, heat is exchanged on the surface of the blades 21, and water generated by condensation is discharged from the drain port 18 into the main body. 1 is discharged outside. Further, the air dehumidified by condensation is sent to the heater 6 through the circulation duct 16, and is circulated into the rotating drum 2 where it is reheated. In addition, as the drying air flows due to the rotation of the heat exchange fan 7, an air flow also occurs within the back plate 20, and this air flow flows from the outside of the main body 1 through the cooling side intake port 13 as shown by arrow B. The air is guided to the heat exchange fan 7, and after removing heat from the circulating air flow (arrow A), it is exhausted to the outside of the main body 1.

Next, based on Fig. 2, the heat exchange fan 7 and the casing 9 are
The details will be explained below.

In the figure, 23 is the starting point of the spiral chamber 21, and the spiral chamber 2
1 starts at its starting point 23, spreads along the rotational direction 25 of the heat exchange fan 7, and ends near the exhaust port 22. Therefore, the pressure inside the swirl chamber 21 is the minimum pressure at the starting point 23 of the swirl chamber 21, and gradually increases as the spiral expands until the maximum exhaust pressure is obtained at the exhaust port 22. 26 is the rotation center of the heat exchange fan 7, 24 is the casing 9
This is the center of the spiral chamber 21.

The size of the swirl chamber 21 must expand to some extent along the rotational direction 25 of the heat exchange fan 7, but it is currently impossible to do so due to the dimensional restrictions of the casing 9. If the swirl chamber 21 is made larger, the outer diameter of the heat exchange fan 7 must be made smaller, resulting in a significant drop in heat exchange performance. To solve these problems, heat exchange fan 7
By making the center point 24 of the swirl chamber 21 eccentric with respect to the rotation center 26 of the swirl chamber 21, the cross-sectional area of the flow path of the swirl chamber 21 can be expanded, and the air flow becomes smooth with little pressure loss and the air blowing capacity is significantly improved. .

〔Effect of the invention〕

As described above, in the present invention, by making the center of rotation of the heat exchange fan eccentric to the swirl chamber, the air flow becomes smooth, pressure loss is small, and air can be efficiently blown. Additionally, the structure is extremely simple, requiring no special parts or members.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of a clothes dryer according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of the main parts. 7... Heat exchange fan, 9... Casing, 21...
・Swirl chamber, 24... Center point of the swirl chamber, 26... Heat exchange fan rotation 1 --- Temporary frame fan q --- Lean rotation 2

Claims (1)

[Claims] 1. In a casing equipped with a heat exchange fan with air blowing and heat exchange capabilities and a swirl chamber that forms a flow path for air flow generated by the rotation of the heat exchange fan, the center of rotation of the heat exchange fan is A clothes dryer characterized by being eccentric to the chamber.