JPS60126199A - Dehumidification type clothing dryer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The present invention relates to a dehumidifying clothes dryer for use in general households.

Conventional configuration and its problems Traditionally, this type of clothes dryer uses a mechanical timer to control the drying operation, and the timer is set at the start of operation for one time period, and the machine starts operating regardless of the progress of drying. Generally, the system is configured so that the operation is terminated immediately, and the operation is sometimes terminated when the drying state is not completed, making it very inconvenient to use. On the other hand, some devices are configured to detect the electrical resistance of the clothes during drying, determine the end of drying based on this, and automatically stop the operation. Since the principle is to detect local electrical resistance, the detection accuracy varies greatly depending on the amount or type of clothing, and it cannot be said to be fully satisfactory to the user. On the other hand, as a means to eliminate such variations in detection accuracy, a method using a dehumidified water detection element that detects the presence or absence of dehumidified water in the ventilation path has been proposed, but in this case, the overall atmospheric humidity inside the dryer It detects water by replacing it with dehumidified water.
It is true that the detection accuracy improves, but it is insufficient because it is a one-point detection that can only detect when drying is completely completed. In order to detect this, it is necessary to use some kind of song method, which is a detection method with little flexibility.

Purpose of the Invention The present invention solves these conventional problems and provides an easy-to-use dehumidifier that not only accurately detects the end point of drying but also allows the user to freely set the drying state according to his or her preference. The purpose is to provide a type of clothes dryer.

Structure of the Invention The dehumidifying clothes dryer of the present invention includes a heater for heating air, a clothes storage, a heat exchanger for cooling and dehumidifying high-temperature air containing moisture from clothes, and air after dehumidification. A circulation duct for returning the water to the clothes storage via the heater, and a dehumidified water detection element provided in the circulation duct, and an auxiliary heater for heating the element is attached to the dehumidified water detection element,
By controlling the input to this auxiliary heater, the detection level for the completion of drying can be freely changed.

DESCRIPTION OF EMBODIMENTS A dehumidifying clothes dryer which is an embodiment of the present invention will be described below with reference to the accompanying drawings. In Figures 1 and 2, 1 is a heat exchange type blower that can blow drying circulating air and cooling air and exchange heat between the two at the same time.
2 is a drum for storing clothes to be dried; 3 is a motor for rotationally driving the heat exchange type blower 1 and the drum 2;

A heater heats the drying air introduced into the four-layer drum 2, and a circulation duct 5 circulates the air cooled and dehumidified by the heat exchange blower 1 to the heater 4. 6
is a fan case of the heat exchange type blower 1, and 7 is a dehumidified water detection element that detects dehumidified water floating and flowing in the air in the circulation duct 5 by the function of the heat exchange type blower 1. 8
9 is the outer frame of the dryer, and 9 is the lid of the input port provided on the front side of the outer frame 8. 10 is a drainage hose that guides dehumidified water to the outside of the machine; 1
Number 1 is an intake port for cooling air, and number 12 is an exhaust port. Further, FIG. 2 shows details of the dehumidified water detection element 7, in which 13 is a substrate, and 14 and 15 are counter electrodes provided on the substrate 13 at a predetermined interval. There are 16 auxiliary heaters printed on the back side of the board 13. In FIG. 1, the black arrows indicate the flow of high-temperature air, and the white arrows indicate the flow of cooling air.

Next, its operation will be explained using the following structure. When clothes after dehydration are put into the dryer and the dryer starts operating, the rotation of the motor 3 causes the heat exchange type blower 1 and the drum 2 to rotate, and the heater 4 starts to be energized.

As a result, the air heated by the heater 4 becomes hot and humid in the drum 2, containing moisture from the clothes, and is then sucked into the high temperature side of the heat exchange type blower 1. At this time, outside air is simultaneously taken into the other surface of the heat exchange type blower 1, and circulating air and cooling air flow side by side with the blade configuration diagram in between. For this reason, heat exchange takes place between the circulating air and the cooling air via the surfaces of the blades, and the circulating air is deprived of heat and produces condensed water. The water condensed on the field surface of the blade is blown away along with the air by the centrifugal force of the heat exchange blower 1, and is discharged into the circulation duct 6. At this time, a part of the condensed water becomes mist-like water droplets that float in the air and adhere to the surface of the dehumidified water detection element 7. Due to this water droplet adhesion, the electrical resistance between the opposing electrodes 14 and 15 provided on the surface of the dehumidified water detection element 70 is extremely reduced, making it possible to detect a so-called dew condensation state. Further, the condensed water is drained out of the machine through the drainage hose 1o along the inner wall surface of the cloth section circulation duct 5. The air thus cooled and dehumidified is heated again by the heater 4 and sent into the drum 2, and the cooling air absorbs the heat of the circulating air to become high-temperature air and is exhausted to the outside of the machine from the cooling exhaust port 12.

As the drying progresses by repeating the above process and the clothes become reasonably dry, the evaporation of water in the drum 2 gradually decreases, which reduces the amount of water condensed in the heat exchange blower 1. Naturally, the amount of floating water droplets in the circulation duct 6 also decreases. Therefore, the water droplets adhering to the surface of the dehumidified water detection element 7 evaporate, and the electrical resistance between the opposing electrodes 14 and 15 increases rapidly, making it possible to detect the end of drying.

Here, 1,
It largely depends on the atmospheric humidity at that time and the surface temperature of the dehumidified water detection element 7. Therefore, if the surface temperature of the dehumidified water detection element 7 is lowered by 1-6 by energizing the auxiliary heater 16 provided on the back side of the dehumidified water detection element 7, the evaporation of water droplets will be faster than in the normal case. This makes it possible to shift the timing of drying completion detection. Therefore, for example, if the dehumidified water detection element 70 substrate 13 is made of a material with high wettability and the conditions are set in advance to make it difficult for water droplets attached to the surface to evaporate, drying can be completed without energizing the auxiliary heater 16. The detection level is now detected when it is slightly too dry, and by appropriately controlling the amount of electricity supplied to the auxiliary heater 16, it is possible to detect the end at any dry state, depending on the user's preference. It is possible to provide a dryer that is easy to use and can stop drying operation in a desired drying state.

In the above embodiment, the dehumidified water detection element 7 uses a resistor between opposite electrodes with a simple χ'', but it is also possible to use a commonly used moisture-sensitive ceramic or moisture-sensitive resin. Any type of element may be used as long as it detects the phenomenon of evaporation of moisture on the surface.

Effects of the Invention As is clear from the above embodiments, the dehumidifying clothes dryer of the present invention provides an auxiliary heater in the dehumidified water detection element and controls the input to this heater, thereby allowing the dehumidifying clothes dryer to adjust to the user's preference. It is an extremely practical and easy-to-use dehumidifier that can automatically stop operation with high precision when the drying condition is appropriate, and anyone can take out clothes in the optimal drying condition according to their preference. A type of clothes dryer can be provided.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a dehumidifying clothes dryer which is an embodiment of the present invention, FIG. 2 is an enlarged view of a dehumidified water detection element of the same dehumidifying clothes dryer, and FIG. 2(a) is a front view. , the same figure (b) is a side view, and the same figure (C) is a back view. 1...Heat exchange type blower, 2...Drum, 4...Heater, 5...Circulation duct, 7...Dehumidified water detection Element, 16...Auxiliary heater.

Claims (1)

[Claims] A heater for heating the air, a clothes storage for storing clothes after dehydration, a heat exchanger for cooling and dehumidifying the high-temperature air in the clothes storage with outside air, and a heat exchanger for cooling and dehumidifying the high-temperature air in the clothes storage with outside air. A circulation duct that leads to the clothes storage through the heater,
A dehumidification detection element is installed in the circulation duct and detects dehumidification water generated by the action of the heat exchanger to detect when the drying operation ends, and controls Q input to the dehumidification water detection element. This dehumidifying type clothes dryer is equipped with an auxiliary heater for heating the element, which allows the detection level of the end of drying to be controlled.