JPS59149199A - Controller of 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 provides a function for calculating the delay time after constant dryness detection in a dryer with dryness detection, depending on the characteristics of the product, particularly the drying characteristics and degree of dryness. This invention relates to a dryness detection control device that allows switching of functions.

Conventional configuration and its problems In a conventional dryer with dryness detection, after constant dryness is detected by electrodes, a predetermined delay time is set depending on the degree of rise in the hot air circulation temperature, and after the predetermined delay time, hot air operation is started. In the control circuit that stops the system, the delay time is calculated and controlled using a single type of function.

If the delay time is set using one type of conventional function, it would be possible to
Since the drying characteristics of each dryer are different when changing the dryer to dry, 3Kg, and 4Kg, it is necessary to change the delay time function accordingly, and it is necessary to consider these each time. Ta. Furthermore, the number of types of control circuits increases, making it expensive in terms of management and cost.

OBJECTS OF THE INVENTION The present invention is intended to solve the above-mentioned conventional problems, and is intended to be applicable to many types of devices with one control circuit.

Structure of the Invention The control device for a clothes dryer according to the present invention detects a constant dry state using electrodes, and then detects the condition according to the degree of increase in the circulating temperature of hot air.
A control circuit that sets a predetermined delay time and stops the hot air operation after the predetermined delay time is provided with many types of delay time calculation functions, each of which can be switched, so that the function can be adjusted according to the characteristics of the product being used. It is designed so that it can be switched.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a perspective view showing the configuration of an embodiment of the present invention. Reference numeral 1 denotes constant dryness detection means for detecting a constant degree of dryness of the clothes in the drum. 2 is a temperature detection means for detecting the temperature of the circulating hot air. Reference numeral 3 denotes a control means for these, in which a constant dryness detection means 1 detects a constant degree of dryness of the clothes in the drum, and at the same time a temperature detection section of the circulating hot air of a temperature detection means 2 detects a preset increase in A degree Celsius. and is inputted by the control means 3. The control hair stage 3 determines the delay time using a preset function by the function switching means 4, controls the motor drive means 6 and the heater drive means 6 by the control means 3, and after the delay time has elapsed, all the This is to turn off the power.

FIG. 2 shows the specific configuration of this embodiment. 7
A rotating drum serving as a drying chamber is rotatably supported within the outer box 8, and its rotation causes the material to be dried 9 inside to rotate and fall.

Reference numeral 10 denotes a motor provided in the outer box 8, which rotates the rotary drum 7 via a belt 11 and also rotates the belt 12.
The dehumidifying fan 14 (hereinafter referred to as fan) inside the fan case 13 is simultaneously rotated via the fan.

When the fan 14 is rotated, the air inside the rotating drum 7 flows from the filter cover 16 to the filter 1 as shown by the arrow.
6. It passes through the filter 17, passes through the fan case 14, is sent into the heater cover 19 from the ventilation path 18, and becomes hot air by the heater 21 installed in the drum front plate 2o, and is blown into the citrus through the ventilation hole 20'. The hot air heats the material to be dried 9 in the rotating drum 7 and removes moisture from it, and repeats the above-mentioned ventilation cycle. During the hot air circulation cycle, the hot air containing a large amount of humidity comes into contact with the inner wall of the fan 14 on the drum 7 side. At that time, the outside air also touches the wall on the outside air side of the fan 14, and due to the temperature difference at that time, it is blown away by the rotation of the fan 14, and water droplets are drained out of the machine through the drainage hole 22 provided in the fan case 13. Ru. By repeating the above-described cycle, moisture is removed from the material to be dried, and the material to be dried 9 in the drum 7 is dehumidified and dried.

Reference numeral 23 denotes a means for detecting a certain degree of dryness by contacting the material 9 to be dried, such as an electrode plate for contacting the material 9 to be dried and detecting its electrical resistance; It is fixed on the side facing the inside 7 of the rotating drum 2o.

Reference numeral 24 denotes a temperature detection means, for example, a thermistor having a negative resistance-temperature characteristic, which detects the temperature of the hot air in the front passage of the fan 14 in the circulating hot air passage, that is, the hot air that is not dehumidified.

Therefore, the object 9 to be dried in the rotary drum 7 is dried by hot air drying as described above, and a predetermined drying rate is detected by the electrode 23. At the same time, the temperature rise At of the hot air circulation temperature is detected by the thermistor as shown in FIG. 24, the control means measures A'Ct, calculates it using a set function, sets a delay time T, and after the time elapses, all power supplies are turned off.

As for the above function, as shown in Fig. 4, the vertical axis is the delay time and the horizontal axis is the time for the rise in temperature by A℃, and the relationship in each product characteristic is shown, and the calculation method is as follows: If 4t=T, 4×6 minutes (A'Ct)=20 minutes (T
), which requires a delay time of 20 minutes. The diagram shows that three types of functions are available: 4'i=T, 2 t=T, and T=t.

These three types of functions can change the drying characteristics of the product or the drying state at the final drying setting, and by providing about three or four types of functions,
Multiple models available with one control device.

Compatible with many different types of clothes dryers.

Effects of the Invention As is clear from the above explanation, according to the present invention, a plurality of delay time calculation functions are provided in one control circuit, and by being able to switch from the outside depending on the purpose of each,
It can be used with many types and specifications of clothes dryers, and is advantageous in terms of parts management and cost.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a control device for a clothes dryer showing an embodiment of the present invention, Fig. 2 is a sectional view of main parts of the clothes dryer, and Fig. 3 is a drying rate and drying time in the clothes dryer. FIG. 4 is a characteristic diagram showing the relationship between the temperature rise time and the exhaust temperature rise, and FIG. 4 is a characteristic diagram showing the relationship between the A° C. rise time and the slow i time. 7... Rotating drum, 1o... Motor,
14...Fan, 21...Heater,
23... Electrode, 24... Temperature detection element. Name of agent: Patent attorney Satoshi Nakao (11 men)
Figure 42

Claims (1)

[Claims] means for drying the air with hot air, which contacts the object to be dried and detects a predetermined drying level of the object to be dried based on its electrical resistance; and circulation of the hot air after the drying level is reached. means for setting a predetermined delay time according to the temperature and degree of rise; and a means for stopping the hot air drying operation after the predetermined delay time.