JPS60168497A - 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 hot air drying type clothes dryer for use in general households.

Conventional structure and its problems Conventionally, in this type of clothes dryer, the user intuitively judges the quantity and quality of the items to be dried, and determines the strength of the heat based on the user's own experience. It is common to set the operating hours. For this reason, there have been problems such as the user's erroneous judgment resulting in the drying being too dry, or the drying operation being stopped due to the drying being left undried. On the other hand, there are some devices that automatically end the drying operation based on the electrical resistance, temperature, etc. of the clothes.

However, even in this case, it cannot be said that the effect of the amount of clothing can be fully covered, and there are problems such as the drying often stops in an undryed state, especially when drying a small amount of clothing. .

Purpose of the Invention The present invention solves these conventional problems and provides a clothes dryer that is easy to use and produces less waste by automatically determining the amount of items to be dried and controlling the drying operation. It is something.

Structure of the Invention The clothes dryer of the present invention includes a clothes storage, a blower, a heat source for heating the air, a humidity detection device that measures the humidity inside the clothes storage or a location correlated thereto, and a humidity detection device that detects the humidity. It has a cloth amount determination device that determines the amount of cloth based on the output of the device, and determines the amount of cloth to be dried by utilizing the fact that the change in humidity inside the clothes storage after drying operation starts differs depending on the amount of cloth. This controls the operation of the dryer.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, reference numeral 1 denotes a clothes storage for storing clothes after dehydration, 2 a blower for blowing drying air, and 3 a heat source for heating the drying air. Reference numeral 4 denotes a humidity detection device provided in an exhaust passage 6 for exhausting the air in the clothes storage 1, and 6 is a motor that rotationally drives the clothes storage 1 and the blower 2. Reference numeral 7 denotes a control unit of the dryer, which compares a storage device 8 that stores the relationship between the amount of cloth and humidity changes, and a value stored in advance in this storage device 8 with the output change of the humidity detection device 4; A cloth amount determining device 9 that determines the amount of clothing, and a heat source 3 according to the output of this cloth amount determining device 9.
It has a built-in controller 10 that controls the dryer 6 and controls the entire operating process of the dryer.

11 is a filter provided on the rear surface of the clothing storage 1;
2 is the outer frame of the dryer main body.

The operation in the above configuration will be explained. When the dryer starts operating, the motor 6 and heat source 3 are energized by the operation of the controller 1o, the clothes storage 1 rotates, and the blower 2 rotates to send drying air according to the arrows in FIG. As a result, moisture evaporates from the clothes in the clothes storage 1, and the air containing this moisture is exhausted to the outside of the outer frame 12 through the exhaust passage 5, and the drying operation progresses. Figure 3 shows the humidity change in the exhaust passage 5 during this drying operation.
The solid line shows the experimental results when the amount of cloth is 3+<g, and the broken line shows the experimental results when the amount of cloth is small, such as 0.6 to 9. As is clear from the figure, the humidity inside the exhaust passage 5 is
As the moisture evaporation inside the clothes storage 1 increases, the humidity becomes high, and after stabilizing at a humidity close to IOO, the humidity decreases again just before the end of drying, leading to the end of drying. At this time, if we pay attention to the difference in the humidity change when the amount of cloth is large and when it is small, there is a clear difference in the change from immediately after the start of the drying operation until the humidity becomes stable at high humidity. That is, when the amount of cloth is large, the total amount of moisture absorbed in the clothes is also large, so that the humidity changes rapidly after the start of operation, whereas when the amount of cloth is small, the humidity changes relatively slowly. Therefore, if the correlation between the amount of clothing and the rate of change in humidity is measured and stored in advance, the amount of clothing can be determined simply by detecting the rate of change in humidity. If the amount of heat generated by the heat source 3 or the rotational speed of the motor 6 is controlled via the controller 1o in accordance with the amount of cloth detected by the amount of cloth determining device 9 in this manner, a dryer that is more convenient to use and more economical can be realized. can be provided. Furthermore, it is also possible to stop.

In addition, in the above embodiment, an example was shown in which the humidity detection device was installed in the exhaust passage of a so-called exhaust type clothes dryer, but the installation position of this humidity detection device is related to changes in humidity inside the clothes storage. It can be used anywhere as long as the humidity changes in a certain way.For example, in the case of a dehumidifying clothes dryer with a built-in heat exchanger, the above function can be used even in the ventilation path after passing through the heat exchanger. It has been experimentally confirmed that there is no such thing.

Effects of the Invention As is clear from the above embodiments, the clothes dryer of the present invention determines the amount of clothes by detecting changes in humidity in the clothes storage or a location correlated thereto, and By controlling the operating process of the clothes dryer based on the above, conventional problems are solved and a clothes dryer that is extremely easy to use and highly economical is provided.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a vertical sectional view of a clothes dryer showing one embodiment of the present invention, Fig. 2 is a block diagram showing its functions, and Fig. 3 is a view of the inside of the clothes storage or its correlation. FIG. 2 is a characteristic diagram showing changes in humidity at a certain location. 1...Clothing storage, 2...Blower, 3
... Heat source, 4 ... Humidity detection device, 7.
. . . Control unit, 9 . . . Cloth amount determination device. Figure 1 Figure 2 ``-1-lower-ee; Kaku i Director'' Figure 3 Igeki Soojikaku L J

Claims (1)

[Claims] A clothes storage for storing clothes after dehydration, a blower for blowing drying air, a heat source for heating the air, and a humidity detection device for detecting the humidity inside the clothes storage or a place correlated thereto. and a cloth amount determining device that determines the ribs of the clothing based on the rate of change detected by the humidity detecting device after the start of the drying operation, and the drying operation state is determined according to the output of the cloth amount determining device. A clothes dryer configured to control