JP3009288B2 - Clothes dryer with condensation control function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer having a dew condensation control function for solving the problem of dew condensation occurring in a moisture drainage tube of a clothes dryer.

[0002]

2. Description of the Related Art In the case of a clothes dryer, a large amount of water vapor generated from clothes is condensed in a drain cylinder. Therefore, conventionally, as shown in FIG. 2, a heat insulating material 3 is coated on a moisture drainage cylinder 2 connecting the clothes dryer 1 and the outdoors to prevent dew condensation by this heat insulating effect, or to provide a drain gradient to the moisture drainage cylinder. are doing.

[0003]

However, the following problem has occurred.

A. Even if the heat insulating material 3 is covered, the inside of the dehumidifying cylinder 2 may be cooled in winter due to the temperature of the outdoors, and the occurrence of dew may not be completely prevented. In particular, in large-capacity short-time drying, the amount of dehumidification per unit time is large, so that the occurrence of dew condensation is inevitable. For this reason, even when the heat insulating material 3 is covered, the drainage cylinder is provided with a drain gradient at the time of construction so that dew condensation is not kept in the drainage cylinder.

B. The work of covering the heat insulating material 3 is troublesome and costly, and the outside diameter of the dehumidifying cylinder becomes large due to the covering of the heat insulating material 3, which makes the construction difficult, or the exposed piping is forced due to the building. May be.

[0006] It is an object of the present invention to provide a clothes dryer with a condensation control function that does not require covering with a heat insulating material or providing a drain gradient.

[0007]

The configuration of the present invention is as follows.

A dew condensation sensor is attached to a part of the dehumidifying cylinder,
In clothes dryer degree of condensation output from the condensation sensor performs a condensation prevention operation in the case of a certain value or more, sintered
Before starting the dew prevention operation, first open the clothes dryer door,
Check the closing status with the history of whether the limit switch has been activated
However, if the door has been opened even once,
Operate in dry mode and door opening is not detected
A clothes dryer with a condensation control function, which is equipped with a controller for controlling the operation in a blowing mode for a certain period of time.

[0009]

When the drying mode of the clothes is completed, the controller detects the humidity in the dehumidifying cylinder by the dew condensation sensor, and if the value is equal to or more than a certain value, performs the dew condensation preventing operation (dehumidifying operation) for a certain time. However, after the operation of the dryer is stopped, the operation mode is changed depending on whether clothes have not been taken out yet or when clothes have been taken out. Whether the clothes have been taken out is detected by opening and closing the door with a limit switch, for example,
If the door is opened, it is determined that the clothes have been taken out.If the door has never been opened, it is determined that the clothes are in the dryer as it is.In the former case, the drying operation is performed, and in the latter case, the drying operation is performed. In order to prevent excessive drying, a blowing operation is performed. When the drying operation is performed to prevent dew condensation, the operation may be directly performed with a high calorie. However, in this case, the output may be excessively high. In this case, an operation mode with a low calorie is set. The time of the dew condensation prevention operation is short in the drying operation mode and long in the blowing operation.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a clothes dryer, 2 is a moisture drainage cylinder (duct), 4
Is a pipe hood, 5 is a dew condensation sensor mounted in the dehumidification tube 2, 6 is an open / close detector of the door 8, and 7 is a controller, which performs the following control.

A. When the operation of the clothes dryer 1 is stopped and the door open / close detector 6 detects the opening / closing of the door 8 once, the dryer 1 is set to the low calorie drying mode and the dehumidifying operation is performed for a certain period of time.

B. If there is no opening and closing of the door 8, the air-blowing operation mode is selected and the dehumidifying operation is performed for a certain time.

C. If the dew condensation sensor 5 detects a value equal to or less than a certain value, that is, a value at which there is no concern about dew condensation, or does not detect the dew condensation at all, the dew condensation prevention operation is not performed.

The dew condensation sensor 5 of the embodiment detects the humidity inside the drain cylinder 2 and is a type of humidity sensor.

[0015]

The present invention has the above-described structure and has the following effects.

A. The possibility of dew condensation in the dehumidifying cylinder is detected by the dew condensation sensor, and if there is a possibility, the dehumidifying operation in the dehumidifying cylinder is performed, so there is no worry of dew condensation, so that the dehumidifying cylinder can be covered with heat insulating material, There is no need to make a drain gradient.

B. The material of the moisture drainage cylinder may be made of tin.

C. Due to the above effects a and b, the construction is simple and the construction cost is low.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a clothes dryer with a condensation control function according to the present invention.

FIG. 2 is an explanatory view of a conventional dew condensation preventing means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clothes dryer 2 Drainage cylinder 3 Insulation material 4 Pipe top 5 Dew condensation sensor 6 Door open / close detector 7 Controller 8 Door

Claims (1)

(57) [Claims] 1. A mounting dew sensor in a part of the exhaust humidity inside the cylinder, clothes dryer smell the degree of condensation output from the condensation sensor performs a condensation preventing operation if more than a predetermined value
Before entering the dew condensation prevention operation, first open the clothes dryer door.
The history of open / closed status of limit switch operation
Check that the door has been opened even once
Is operating in dry mode and no door opening is detected.
Bought condensation control function with clothes dryer comprising attaching a controller for <br/> controlled to perform a certain time the operation in the air blowing mode when the.