JPS60126198A - 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 the Invention The present invention relates to a clothes dryer that automatically detects the drying state of items to be dried.

Conventional configurations and their problems Conventionally, with clothes dryers, the drying completion time varies greatly depending on the amount of clothes to be dried, so the user has to judge the amount of clothes to be dried by himself. Estimate the drying end time,
The drying time was set using a timer attached to the machine. However, with this configuration, the drying time is left up to the user's intuition, so even if drying has already been completed, the device continues to operate until the set time is reached, resulting in wasted power and overload. If the clothes become dry and the clothing is damaged, or if the timer setting is too short, it is necessary to take the trouble of adjusting the top and bottom again.

To solve this problem, a drying end sensor has been developed in recent years, which automatically detects the end of drying of the material to be dried and ends the drying operation. This is the drying rate 9, which is the period from the efficiency drying period at the beginning of drying operation to the decreasing rate drying period.
There is a configuration that detects a point around 0% and then stops the drying operation after a delay time determined by multiplying the time from the start of operation to that point by a certain value, but this configuration According to , even for the same amount of clothes, the drying time differs depending on the dehydration rate in the pre-drying process, so the delay time also varies, resulting in large variations in the drying rate at the end of drying, which can result in overdrying. There was a problem in which the operation stopped in half-dry conditions.

OBJECTS OF THE INVENTION In view of the above drawbacks, the present invention provides a clothes dryer that can reliably detect the end of drying.

Structure of the Invention The clothes dryer of the present invention includes a drying device for drying objects to be dried, a drying detection device for detecting when the drying rate of the objects to be dried has reached a certain level, and a drying device for determining whether or not the objects to be dried have reached a certain drying rate. a control unit that stops the operation after a short delay time determined by the amount of dried material detected by the dried material amount detection device after the dried material reaches the certain drying rate; 2) The completion of drying can be reliably detected by determining the delay time based on the amount of material to be dried.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of a clothes dryer which is an embodiment of the present invention. 1 is a power source, 2 is an actuator that drives the load 3, 4 is a control unit that controls the actuator 2, 5 is a drying detection device that detects the drying state of the material to be dried, and 6 is a device to be dried that detects the amount of the material to be dried. It is an object quantity detection device. The load 3 is a drying device, and in a drum type dryer, it is a heater, a motor that rotates and drives the drum, and a blowing fan, and in a hanging dryer, it is a heater and a blowing fan. Next, to explain its operation,
After the power source 1 is turned on, power is applied to the actuator 2 and the control section 4, and the actuator drives the load 3 based on a signal from the control section 4 to start drying operation. After starting the drying operation, the dryness detection device 5 determines whether the material to be dried in the drying chamber has reached a certain preset drying rate.

At the same time, the drying object amount detecting device 6 determines the amount of drying objects, converts it into an electric signal, and transmits it to the control section. The timing of stopping the load 3 is determined by the control unit based on the delay time calculated from the amount of dried material after the drying detection device 6 detects the end of drying.

The reason why the drying operation is ended after a certain drying rate is reached is due to the delay time determined by the amount of material to be dried. First, the dryness detection using the currently developed dryness sensor has a large variation after the drying rate of 101cm @ which is charged at the end of drying, but the drying rate of 90cm when the efficiency drying period transitions to the decreasing rate drying period. % is relatively stable. Secondly, the drying time in the decreasing rate drying period is largely dependent on the amount of material to be dried. FIG. 2 shows the progress of the drying rate with respect to the drying time when the amount of material to be dried is small and large. It can be seen that tl and t2 are delay times determined by each amount of material to be dried, and are proportional to the amount of material to be dried.

As is clear from the above explanation, the drying time during the decreasing rate drying period largely depends on the amount of material to be dried. Optimum drying conditions can only be achieved by terminating the drying after a well-determined delay time.

In addition, when ironing after drying,
If the delay time calculated from the amount of items to be dried is set in advance to be short, drying can be completed in a slightly moist state, which is ideal for ironing.

Effects of the Invention As described above, according to the present invention, the end of drying can be detected with high accuracy, and the process can be carried out optimally without having to stop in a undried state and then re-scenting the clothes, or without damaging the clothes due to overdrying. It can be stopped in a dry state, and its practical effects are significant.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a clothes dryer which is an embodiment of the present invention, and FIG. 2 is a graph showing the relationship between drying rate and time. 3...Load, 4...Control unit, 5...
Dryness detection device, 6...Drying material amount detection device. □
Name of agent: Patent attorney Satoshi Nakao (1 person)
Figure 2 → Between (mi-)

Claims (1)

[Claims] a drying device for drying an object to be dried; a drying detection device for detecting that the object to be dried has reached a certain drying rate; a device for detecting an amount of the object to be dried for determining the amount of the object to be dried; A clothes dryer comprising: a control unit that stops the operation at a delay time determined by the amount of items to be dried detected by the amount of items to be dried detected by the amount of items to be dried after the items reach the certain drying rate.