JP3189336B2 - Dehumidifying clothes dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehumidifying clothes dryer having a heat exchange function.

[0002]

2. Description of the Related Art A dehumidifying clothes dryer dries clothes, uses heat exchange for cooling air, and cools electrical components such as a motor.

A conventional dehumidifying clothes dryer will be described below with reference to FIGS. 3 and 4. FIG. As shown in the figure, a rotating drum 2 is rotatably provided in a dryer body 1,
It is driven by a motor 3 via a drum belt 4.
A clothes inlet 5 is provided on the front of the main body 1, a heater 6 for heating the drying air flowing into the rotary drum 2 is provided below the clothes input port 5, and a heat exchange fan 7 is provided at a rear portion of the rotary drum 2; Reference numeral 7 has an air blowing and heat exchange function, and is driven by the motor 3 via a fan belt 8. The drying air casing 9 of the heat exchange fan 7 is
And a rotary drum side intake hole 10 in the center.
And a filter 11 for removing lint and the like is provided on the rear surface of the rotary drum 2. Cooling air casing 23
Is the same as the air casing 9 for drying,
In the outside, a plurality of outlets 23a are provided to branch out exhaust air and take out cooling air of electric components such as the motor 3, and an outlet 14 is provided on the bottom surface of the main body 1. A shaft 15 for rotatably supporting the heat exchange fan 7 and the rotary drum 2
Is fixed to a holding plate 16 that fixes the drying air casing 9 to the main body 1. A partition member 17 is interposed between the drying air casing 9 and the cooling air casing 23, and a V-shaped sealing member 18 made of felt or the like provided on the outer peripheral portion of the heat exchange fan 7 is provided on the partition plate 17. Are brought into contact with each other by a rotating centrifugal force, and the drying side and the cooling side are airtightly separated from each other. The circulation duct 19 has a function of an air passage leading from the exhaust hole 9 a of the drying air casing 9 to the heater 6. In addition, a drain hole 20 provided in the middle of the circulation duct 19 discharges condensed water generated by heat exchange in the heat exchange fan 7. The back plate 21 that covers the rear surface of the main body 1 has a suction hole 22 for taking in cooling air at a part thereof. The arrow A shown in FIG.
Indicates the flow of the drying air.

In the above configuration, when the motor 3 rotates, the rotating drum 2 containing clothes and the heat exchange fan 7
Rotate, and the air flows indicated by arrows A and B shown in FIG. 4 are generated. Then, the drying air is heated by the heater 6 to dry the clothes in the rotating drum 2, and as a result, becomes hot and humid, and is circulated to the heat exchange fan 7. On the other hand, the cooling air is
The outside air is taken in through an intake hole 22 provided in the cooling air casing 23, and is discharged to the outside through an outlet 23 a of the cooling air casing 23 through a main body side outlet 14 provided in the main body 1. The circulated high-temperature and high-humidity drying air is supplied to the heat exchange fan 7.
, Is cooled and dehumidified by the cooling air, and circulated again in the rotating drum 2. The cooling air after the heat exchange flows out of the outlet 23a of the cooling air casing 23 and is used for cooling the electrical components. As described above, the clothes are dried, the cooling air is used for heat exchange, and the electric parts are cooled.

[0005]

The above-mentioned conventional dehumidifying clothes dryer draws in outside air as cooling air, and cools and dehumidifies the high-temperature and high-humidity drying air via the heat exchange fan 7 to increase the temperature. It can be expected that air for cooling electric components is taken out by using air for air. However, if an outlet 23a for taking out blast air for cooling the electrical components from the cooling air casing 23 is provided, the internal pressure of the cooling air casing 23 is reduced, and the pressure balance with the drying air casing 9 is disturbed. In addition, the drying air leaks from the sealing portion between the heat exchange fan 7 and the cooling air casing 23, and the dehumidifying performance, which is the basic performance of the dehumidifying dryer, is greatly reduced. As described above, in the conventional configuration, it is considerably difficult to branch off the cooling air blow from the cooling air casing 23.

The present invention improves the casing of a heat exchange fan, secures the air flow of cooling air for electrical components, minimizes leakage from the seal between the heat exchange fan and the casing, and ensures dehumidification performance. It is intended to provide a clothes dryer.

[0007]

In order to achieve the above object, the present invention provides a cooling air casing having a first winding vortex chamber and a second winding vortex chamber. An outlet for cooling air is provided.

[0008]

According to the present invention, since the first and second vortex chambers are formed in the cooling air casing in the above construction, the internal pressure of the drying casing and the internal pressure of the first vortex chamber are reduced. Will decrease.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The same components as those described in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. As shown in the figure, the difference from the conventional example is that the cooling casing 1
2 has two vortex chambers, and the first vortex chamber 1
2a is a vortex chamber smaller than the vortex chamber of the drying air casing 9, and the cooling air casing 12a is provided with a continuous partition wall so as to maintain the vortex chamber up to the first turn, that is, the exhaust hole 9a of the drying air casing 9. From the cooling air casing 12b corresponding to the second volume, two
A cooling air outlet 12c is provided. The outlet 12c is connected to an outlet 14 for discharging the outside of the main body.

The operation of the above configuration will be described. When the motor 3 rotates, the rotating drum 2 containing the clothes and the heat exchange fan 7 rotate. At this time, an air flow indicated by an arrow A shown in FIG. 2 is generated in the cooling air casing 12, and an air flow indicated by an arrow B is generated in the drying air casing 9.
Then, the flow indicated by the arrow B passes through the circulation duct 19 and the heater 6.
And enters the rotating drum 2. Hereinafter, the function of the drying air is the same as that of the conventional example. The drying air containing the water coming out of the clothes is dehumidified by the heat exchange fan 7, and the water is condensed and drained from the drain hole 20. On the other hand, the cooling air is sucked in from the intake hole 22 by the heat exchange fan 7, flows along the blade portion of the heat exchange fan 7 from the central portion to the outer periphery, and exchanges heat. Out of the vortex chamber 12a. Then, the electrical components are cooled from the second vortex chamber 12b through the outlet 12c of the cooling air. The cooled air is discharged outside the main body through the discharge port 14. In this case, the drying air casing 9 and the cooling air casing 1 which are in a front-to-back relationship with respect to the heat exchange fan 7.
Since the difference in internal pressure between the first and second vortex chambers 12a is smaller than that of the conventional configuration, the leakage of high-temperature and high-humidity drying air to the cooling air casing 12 side is suppressed, and high humidity removal is enabled. Things.

In this embodiment, two cooling air outlets 12c are provided in accordance with the arrangement of the electrical components, but it goes without saying that the same effect can be obtained by changing the number and position of the cooling air outlets.

[0012]

As apparent from the above description of the embodiment, the present invention provides a cooling air casing for a heat exchange fan.
A spiral vortex chamber is provided, the first vortex chamber is provided in a vortex chamber smaller than the vortex chamber of the drying air casing, and cooling air is branched from the second vortex chamber to cool the electrical components and In addition, it is possible to suppress the leakage between the heat exchange fan and the casing and improve the dehumidification amount.

[Brief description of the drawings]

FIG. 1 is a side view of a peripheral portion of a heat exchange fan of a dehumidification-type clothes dryer according to an embodiment of the present invention as viewed from a back plate side.

FIG. 2 is a longitudinal sectional view of a dehumidifying clothes dryer according to one embodiment of the present invention.

FIG. 3 is a side view of a peripheral portion of a heat exchange fan of a conventional dehumidifying clothes dryer viewed from a back plate side.

FIG. 4 is a longitudinal sectional view of a conventional dehumidifying clothes dryer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Rotary drum 3 Motor 7 Heat exchange fan 9 Drying air casing 12 Cooling air casing 12a 1st vortex chamber 12b 2nd vortex chamber 12c Outlet

Claims (1)

(57) [Claims] 1. A main body of a dryer, a rotary drum rotatably provided in the main body, a heat exchange fan provided at a rear portion of the rotary drum and having an air blowing and heat exchange function, and one of the heat exchange fans. A drying air casing on the side, a cooling air casing on the other side, and a motor for driving the rotary drum and the heat exchange fan, wherein the cooling air casing is a vortex chamber smaller than the vortex chamber of the drying air casing. Is provided in the first volume, and an exhaust outlet is provided in the vortex chamber of the second volume.