JPS58198400A - Control apparatus of garment 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 The present invention relates to a control device for a clothes dryer whose purpose is to automatically stop operation at a certain level of finished drying.
It is.

Clothes dryers generally have a structure in which air from a fan heated by a heater flows into a rotating drum, and after exchanging heat with the items to be dried, the air is discharged outside the drum. In addition, during the operation of the clothes dryer, the drying process until the items to be dried are dried is divided into eight periods: a material preheating period, a constant rate drying period, and a decreasing rate drying period, and the a! The degree difference has the characteristics shown in FIG. Figure 1 shows the characteristics of the intake/exhaust temperature difference with respect to the drying period, showing (a) the material preheating period, (b) the constant rate drying period, and (c) the decreasing rate drying period. . In Figure 1, the end of drying
During the lapse rate drying period, when the lapse rate approaches
There is a device that utilizes this characteristic to control clothes dryers.

Conventionally, there is a device shown in the block diagram of FIG. 2 as a device for this purpose. In Fig. 2, i and m are intake/exhaust temperature difference detection units that detect the temperature difference between the intake and exhaust air of the clothes dryer.
Convert to a signal such as voltage or current. (2) is set temperature 1
The generator generates a signal corresponding to the difference in intake and exhaust temperatures that stops the machine when drying clothes. (3) is a temperature comparison section, which compares the temperature signal from the intake/exhaust temperature difference detection unit 5 (tl) and the set temperature generation section (2), and sends the information to the output section (4). Outputs a stop command to the tumbler and heater of the dryer.

When the clothes dryer starts operating, the temperature difference between the suction and exhaust gases changes as shown in Figure 1, and the suction/exhaust deviation detector (
1) The signal that follows the fidget is sent to the temperature comparison section +31 II.
The set temperature generating section (2) sends out a temperature corresponding to the difference in intake and exhaust temperature that is considered to be the end of drying to the temperature comparison section (3).The temperature comparison section (3) ) is configured to operate the output section (4) when the M degree from the intake/exhaust temperature detection section (3) is higher than the set temperature generation section (2). -), the operation of the clothes dryer enters the lapse rate drying period, and the difference in intake and exhaust temperature is the set temperature generation part (2).
When the set temperature is reached, the output section (4) issues a stop command to the motor and heater.

The temperature difference between the suction and exhaust gas during drying 11 differs depending on the type of material to be dried. , Ji!Hanisu everyone f・,
t, the more negative there are, the higher the difference in intake and exhaust temperature will be.
There is one time. (Also, in the conventional dryer mentioned above, the difference in intake and exhaust temperatures at which the dryer stops operating is constant, so if the amount of material to be dried is small, overdrying will occur, and if the load is If the amount increases, the operation will be stopped due to uneven drying or non-drying.

The present invention was made in order to eliminate the above-mentioned conventional drawbacks, and is a control device for a clothes dryer that automatically stops the operation of the clothes dryer after a certain level of finished drying without being affected by the amount of items to be dried. The purpose is to provide

DESCRIPTION OF THE PREFERRED EMBODIMENTS A control device for a clothes dryer according to the present invention will be explained below with reference to the drawings. FIG. 8 is a block diagram showing the configuration of one embodiment. In the figure, C+t+ is a dry period detection section, (2) is a lapse rate dry period detection section, and - intake/exhaust temperature difference detection section (detects a constant rate dry period and a lapse rate dry period based on the temperature signal from 11). (C) is a calculation unit that calculates the signal of the intake/exhaust temperature difference detection unit +11 at a predetermined ratio, and nFi is a storage unit that stores the results calculated by the calculation unit (C). Codes indicate corresponding parts.

Next, the operation will be explained using the drying characteristic diagram shown in FIG. Figure 4 shows the difference in intake and exhaust temperature with respect to the drying time, and 7) the timing (7. Graph (a) shows that when the drying material is less sensitive,
Graph (b) shows the characteristics when there are many gates. As in Figure 1, (a) is the material preheating period, and (middle) is the constant rate drying time II1. (
C) represents the lapse rate drying period.

As is clear from Figure 4, during the constant rate drying period (period 1), the difference in suction and exhaust temperature T
There are temperature points such as a, the difference in intake and exhaust temperature when the temperature is high ('n). Since this difference decreases in proportion to the amount of material to be dried, the constant rate drying period oil) suction and exhaust 71!1 pod difference G
It is possible to indirectly detect the wrinkles of the dried material by
It's a T scolding.

In FIG. 8, 11M degrees fg from the intake/exhaust temperature difference detection section +11 is calculated by the rate dry period detection section υυ and the lapse rate dry period detection section G)4. It is sent to the calculation section C19 and the temperature comparison section (3). The constant rate dry period detection unit Cυ detects a period in which the rate of change in the intake/exhaust temperature difference is small.1. It is a constant rate drying period. Yokodebe prisoner in the dry period of forgiveness rate sucks! This is the exhaust period. When the operation of the wet bed drying bed is started and the drying rate reaches a constant rate drying period, the grudge drying period detection unit Qυ detects it and outputs the information to the calculation unit (c).

When the calculation section (c) inputs the information manually, it calculates the temperature difference from the intake/exhaust temperature detection section +11 using a preset I4-rate, and simultaneously sends the performance results to the storage section @. The storage section (c) stores the value.

When the drying period has passed and the lapse rate drying period (c) begins, the lapse rate drying period detection section @ detects it and sends the information to the temperature comparison section (31).The temperature comparison section (3) The temperature signal of the temperature difference detection section i11 is compared with the calculation result value stored in the storage section Q4, and when the former becomes a larger value than the latter, the output section (
4). Then, the output section (4) outputs an operation stop signal to the motor and heater.

In this manner, the present invention detects the lid of the object to be dried based on the difference in suction and exhaust temperature during the drying period, and uses the detected value to calculate the difference in suction and exhaust temperature during drying as shown in FIG. This calculation result is stored until the lapse rate drying period, and when the drying progresses and the lapse rate drying period is reached, the calculation result is compared with the difference in intake and exhaust temperature (2). Regardless of the bar of dried material, it finishes in a constant dry state without overdrying or uneven drying.

[Brief explanation of drawings]

Fig. 1 is a graph showing the difference in intake and exhaust temperature characteristics with respect to the drying time of a clothes dryer, Fig. 2 is a block diagram showing a conventional control device for a clothes dryer, and Fig. 8 is a graph showing an embodiment of the present invention. FIG. 4, which is a block diagram showing an embodiment of a control device for a clothes dryer, shows the drying period--intake/exhaust temperature difference characteristics depending on the size of the object to be dried. In the figure, (a)...material preheating period, (b)...constant rate drying period, (c)...decreasing rate drying period, (1)...intake/exhaust temperature difference detection section, (2)...・Temperature comparison section, (c)...Calculation section, C4...Storage section Note that the same reference numerals in the drawings indicate corresponding parts. Agent Makoto Tameno - Figure 1 = Dry) 1] Figure 2 'f''i; i correction, 1: (spontaneous) 1)
+i'l ri H myself 1. i) 1 ・I+ it
Ill, 'i 67
-82881 No. 2 1. Miaki ◇)) Pu; (, j Clothes dryer control device - 1 amendment '11 Roto representative piece 111 Ren 8 Part 5, particulars of the details subject to amendment - F1' Scope of the amendment - 6, The scope of the claims in the amended self-answer specification is to be amended as a separate document. % Eaves * range Detects the temperature difference between the intake air and exhaust air of the clothes dryer and automatically shuts down the clothes dryer when drying is completed. PC to stop operation
,, a calculation means for detecting the difference in intake and exhaust temperature during the constant rate drying period and calculating it at a predetermined ratio;
Storage means for storing calculation results were provided by Gunan 1 and Seikei III.
A control device for a clothes dryer, which stops the operation of the clothes dryer when the temperature difference between the intake air and the exhaust gas reaches the value of the calculation result during the drying period.

Claims (1)

[Claims] The drying path r is detected by detecting the temperature difference between the intake air and exhaust air of the clothes dryer.
1- in which the operation of the t'CI clothes dryer is automatically stopped 1-, a calculation means for detecting the constant rate drying period Q, the intake/exhaust IA degree difference, and calculating at a predetermined ratio; and the calculation result. A control/apparatus for a clothes dryer, comprising a storage means for storing the same, and stopping operation of the clothes dryer when the intake air/exhaust temperature difference reaches the value of the calculation result during the subtraction drying period. .