JPH0531296A - Dryer for washing clothes - Google Patents

Abstract

PURPOSE:To shorten the time for drying washing clothes by providing an opening valve for ventilation on one part of the ventilation path of the dryer for washing clothes cooling the steam to be exhaused during the process drying the washing clothes for dehumidification. CONSTITUTION:In the case of the normal washing clothes drying, a 'standard drying' operation is started when 'standard drying' button on a controller 10 is depressed. When the dehumidification is advanced and the draining for dehumidification is almost over, an opening valve 9 is opened under the control of the controller 10, most of circulation air (a) are exhausted, and the drying time is shortened. Further, in the case of a small amount of washing clothes and finishing drying with little moisture on the clothes when a 'small amount of drying' button on the controller 10 is depressed, the drying operation is performed by opening the opening valve 9 from the start of the drying by the controller 10, resulting in short time drying of washing clothes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a household dehumidification type clothes dryer.

[0002]

2. Description of the Related Art Clothes dryers include a so-called exhaust type, which exhausts air after drying clothes, and a so-called dehumidification type, which circulates and dehumidifies air after drying clothes. The former has a short drying time as compared with the latter, but has a drawback of exhausting high temperature and high humidity air into the room, and the latter has a disadvantage that it takes a relatively long drying time although it does not exhaust high temperature and high humidity air into the room.

[0003]

The present invention is intended to solve such conventional problems. That is, in the dehumidification type clothes dryer, when the drying operation of clothes is near the end and almost no dehumidified water is discharged, a part of the air circulation path is opened to the atmosphere and the moist circulating air is released to the atmosphere. The purpose is to reduce the drying time. Furthermore,
When the amount of clothes is small or when the clothes are finished and dried (wetness is low), almost no dehumidified water is discharged. Therefore, from the beginning of the drying operation, open a part of the air circulation path to the atmosphere to dry. It is intended to reduce the time.

[0004]

SUMMARY OF THE INVENTION According to the present invention, an opening valve for opening to the atmosphere is provided in a part of an air circulation path of a so-called dehumidifying type clothes dryer which cools and dehumidifies water vapor discharged in the process of drying clothes. With the provided clothes dryer, when the dehumidifying water (condensation water) is almost completely discharged near the end of the clothes drying operation, the opening valve is opened to the atmosphere.
Furthermore, the dehumidifying water (condensed water) is almost completely discharged, and the temperature gradient at the time when the temperature of the circulating air in the air circulation path rises sharply is detected and the opening valve is automatically opened to the atmosphere. It is a machine. In the case of finishing drying a small amount of clothes or clothes (wetness is low), the changeover switch allows the opening valve to be opened to the atmosphere from the beginning of the drying operation.

[0005]

The present invention is configured as described above, and the opening valve is opened to the atmosphere when the dehumidifying water (condensation water) is almost completely discharged near the end of the clothes drying operation. Although the amount of dehumidified water is slightly reduced, since the moist circulating air is released to the atmosphere, the drying time can be shortened as compared with the conventional dehumidifying clothes dryer.

Further, when the dehumidified water is almost completely discharged, the temperature change in the air circulation path is detected to automatically open the open valve to the atmosphere.

Further, in the case of a small amount of clothes or finish drying, the drying operation can be performed by opening the open valve to the atmosphere from the beginning of the drying operation.

[0008]

1 is a sectional view of a clothes dryer according to an embodiment of the present invention, FIG. 2 is a temperature curve diagram of a thermistor portion in the air circulation path, and FIG. 3 is a circuit diagram of the same.

In FIGS. 1 and 3, the rotary drum 1 and the heat exchange fan 2 are rotationally driven by a motor 3. The heat exchanging fan 2 is a bellows-shaped rugged plastic thin film formed on both sides of the heat exchanging fan 2. Circulating air a having high humidity after drying clothes is circulated inside the heat exchanging fan 2 and outside cooling air b. Is circulated and the circulating air a having high humidity is cooled and dehumidified. The heater 4 heats the dehumidified circulating air a,
Dry air c is created and sent into the drum 1 to dry the clothes 5.

The circulating air a passes through the air circulation duct 6, and the dew condensation water generated by dehumidification is dripped from the drainage port 7 below the air circulation duct 6 and discharged as dehumidification water. A thermistor 8 that detects the temperature of the circulating air a is installed in the air circulation duct 6. As shown in FIG. 1, an electromagnetically operated opening valve 9 is provided in the middle front position of the air circulation duct 6, and the opening valve 9 is slid in the direction of the arrow in FIG. Part or most of it is exhausted. The drying operation of the clothes dryer is controlled by the controller 10. 11 is a filter.

Next, the operation will be described. In the case of normal clothes drying, when the "standard drying" button (not shown) of the controller 10 is pressed, the "standard drying" operation is started.
When the drying progresses and the dehumidified water is almost drained, that is,
When the temperature curve A of the thermistor 8 in FIG. 2 turns upward and reaches the P point, the opening valve 9 is opened by the control of the controller 10, most of the circulating air a is exhausted, and the temperature curve shows two points in FIG. Following P-Q of the chain line, the drying is completed at the point Q, and compared with the conventional drying (finished at the point R of the P-R curve in FIG. 2),
You can save time.

Further, in the case of a small amount of clothes, or in the case of finishing drying with a low degree of wetness of the clothes, when the "small amount drying" button (not shown) of the controller 10 is pressed, the controller 10 controls to open from the initial stage of drying. Since the valve 9 is opened to perform the drying operation, the drying temperature curve shown by 0 to S in FIG. 2 is followed, and the drying temperature curve is shorter than the drying temperature curve 0 to T when the open valve 9 is closed from the initial stage of drying and drying is performed. Can be dried.

[0013]

As described above, according to the present invention, the drying time of the dehumidifying type clothes dryer can be shortened. That is, in the case of normal clothes drying, when the "standard drying" button (not shown) of the controller 10 is pressed, the "standard drying" operation starts, but near the end of the drying operation, dehumidified water (condensation water) Since the open valve is opened to the atmosphere when almost all of the water is exhausted, the amount of dehumidified water will be slightly reduced, but since the moist circulating air is released to the atmosphere, it will be dried compared to the conventional dehumidifying clothes dryer. The time can be shortened. Furthermore, it is convenient to detect the time when the dehumidified water is almost completely discharged from the temperature change in the air circulation path and automatically open the open valve to the atmosphere. Also, in the case of a small amount of clothes or finish drying where the wetness of the clothes is low, the opening valve can be opened to the atmosphere from the beginning of the drying operation and the drying operation can be performed, so the time is greatly reduced compared to the conventional dehumidifying and drying operation. Became possible.

[Brief description of drawings]

FIG. 1 is a sectional view of a clothes dryer according to an embodiment of the present invention.

FIG. 2 is a temperature curve diagram of a thermistor portion in an air circulation path of a clothes dryer according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of a clothes dryer according to an embodiment of the present invention.

[Explanation of symbols]

1 rotating drum 2 heat exchange fan 3 motor 4 heater 5 clothing 6 Air circulation duct 7 drain 8 thermistor 9 Open valve 10 controller 11 filters

Claims (4)

[Claims] 1. A clothes dryer in which an opening valve for opening to the atmosphere is provided in a part of an air circulation path of a clothes dryer for cooling and dehumidifying water vapor discharged in the process of drying clothes. 2. The clothes dryer according to claim 1, wherein the opening valve is opened to the atmosphere when the dehumidifying water is almost completely discharged near the end of the clothes drying operation. 3. The release valve is automatically opened to the atmosphere by detecting the temperature gradient when the temperature of the circulating air in the air circulation path rises sharply after the dehumidified water is almost completely discharged. And the clothes dryer according to claim 2. 4. When finishing drying a small amount of clothes or clothes,
The clothes dryer according to claim 1, wherein the opening valve can be opened to the atmosphere from the initial stage of the drying operation by the changeover switch.