JPH04187197A - Control device of clothing dryer - Google Patents

Abstract

PURPOSE:To dry clothes to have a temperature suitable for taking out at the end of a cool air operation by detecting the temperature of clothes and outputting it to a cool air-setting means through a circulating air temperature- detecting means so as to end the operation of the cool air-setting means. CONSTITUTION:In a cool air operation after the end of drying, a circulating air temperature detection sensor 11 detects a circulating air temperature within a drum 7 and outputs a signal to a cool air-setting end means 3 at the point of time when the temperature of a circulating air cools to a predetermined temperature, e.g. a temperature b' at the time of the end of operation of a cool air-setting means at the time of setting a standard to end the cool air operation by the cool air-setting means 4. Thus, clothes within the drum 7 are neither too hot nor too cold and can be taken out at a suitable temperature so that no heat is felt by hand at the time of touching the clothes and it is possible to eliminate crumples of clothes due to supercooling.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control device for a clothes dryer that supplies cold air into a drum after a drying operation.

2. Description of the Related Art Conventionally, a control device for a clothes dryer of this type has a configuration as shown in FIG. That is, the drum 7 shown in FIG.
a drying operation setting means 1 that determines the rising temperature of the clothes 8 at the start of drying and sets a drying operation time; and a cold air setting means 4 that supplies cold air into the drum 7 by a cold air operation after the drying operation is finished. , a time measuring means 5 that measures the time after the end of the drying operation, and a cold air setting ending means 3 that ends the cold air operation based on the output of the time measuring means 5.

Problems to be Solved by the Invention In a control device for a clothes dryer having such a conventional configuration, when the drying operation is terminated by the output of the drying operation setting means 1, the environmental temperature in which the dryer is placed, the second The temperature of the circulating air in the drum 7 and the temperature of the clothes differed due to the strength of the heater 10 shown in the figure and the determination function for determining the completion of drying.

That is, a circulation temperature detection sensor 11 detects the temperature of the hot air after being heated by the heater 10 shown in FIG. 2, and a cold air temperature detection sensor 12 that detects the temperature of the cold air after being cooled by the cooling fan 9. However, as the drying condition progresses, the end of the drying condition is judged by observing the changes as shown in Figure 3.In boat fishing, the drying degree setting switch is also performed as shown in Figure 5. When the setting of means 13 (course from over-dry to undried) is made, if the over-dry setting is set, the drying operation is performed up to point C shown in Fig. 3, and if the undried setting is set, the drying operation is performed up to point a. Since the set drying degree is obtained by completing the drying operation by the following steps, the circulating air temperature at the end of the drying operation according to the set course is a, 'b,
A difference such as c occurs.

Similarly, depending on the environmental temperature in which the clothes dryer is placed, even if the set courses are the same, d and e shown in Fig.
There is a difference in the temperature of the circulating air at the end of drying, as shown in the figure.

On the other hand, since the cold air time of the cold air setting means 4 is set constant at, for example, about 3 minutes in the standard setting, when the clothes are taken out from the drum 7 after the end of the cold air operation, the temperature of the clothes is 3 minutes. b′ shown in the figure.

C', and d' and e' shown in FIG. 4, resulting in a problem in that the clothes are still hot or, conversely, too cold.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a control device for a clothes dryer that brings the clothes to a temperature suitable for taking them out at the end of the cold air operation.

Means for Solving the Problems In order to achieve the above object, the present invention provides a circulating air temperature detecting means for detecting the circulating air temperature inside the drum when cold air is supplied after drying operation, and the circulating air temperature detecting means. and cold air setting termination means for terminating the operation of the cold air setting means for supplying cold air into the drum in response to the detection output.

Further, when the temperature of the circulating air in the drum does not drop even if the cold air is supplied by the cold air setting means, the cold air operation is terminated after a predetermined time, and an abnormality notification means is provided for notifying an abnormality. .

According to the above-described configuration, the circulating air temperature detection means detects the temperature inside the drum during cold air operation, that is, the temperature of the clothes, and outputs the detected temperature to the cold air setting termination means, thereby terminating the operation of the cold air setting means. be able to.

Furthermore, when the temperature of the circulating air does not drop even after supplying cold air due to a failure of the circulating air temperature detection means, etc., the abnormality notification means detects the abnormal state and ends the cold air operation after a predetermined time, and Abnormalities can be reported.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5.

FIG. 1 shows a main block diagram of the present invention, in which the drying process determines the temperature state at the start of drying of the clothes 8 stored in the drum 7 in the housing 6 in FIG. 2 and sets the drying operation time. An operation setting means 1, a cold air setting means 4 for supplying cold air into the drum 7 by a cold air operation after the end of the drying operation, and a circulating air temperature detecting means 2 (a third The cooling air setting terminating means 3 terminates the operation of the cold air setting means 4 by the output of the cold air setting means 4 (indicated by reference numeral 11 in FIG. 2). In addition, the circulating air temperature detection sensor 11
An abnormality notification means 13 is provided which stops the cold air operation after a predetermined period of time upon detection and notifies an abnormality when the temperature of the circulating air does not detect a decrease.

In the configuration described in Section 111, as shown in the second section, in the drying operation, hot air heated by the heater 10 is applied to the clothes 8 in the tram 7, and then hot air containing moisture taken from the clothes is applied to the cooling fan 9. The hot air is cooled, water in the hot air is removed, and the dry air is sent to the heater 10 to circulate the hot air.

In the process of this drying operation, the circulating temperature detection sensor 11 detects the temperature of the circulating hot air containing moisture as the drying state of the clothes changes, and the cold air detects the temperature of the cold air after heat exchange by the cooling fan 9. The temperature of the temperature detection sensor 12 changes as shown in FIG. 3, and the dry state of the clothes in the tram 7 is detected from the temperature change of these two temperature detection sensors 11 and 12. However, if the drying state at the end of drying is set to undried or overdried by the setting of the drying degree setting switching means 13 shown in FIG.
As shown in a, b, and c in the figure, the temperature of the circulating air at the end of drying naturally differs, and as shown in Figure 4, the temperature at the end of drying also varies depending on the environmental temperature outside the dryer. There are differences as shown in d and e.

However, in the subsequent cold air operation, the temperature of the circulating air inside the drum 7 is detected by the circulating air temperature detection sensor 11, and the temperature of the circulating air is a predetermined temperature, for example, the temperature b at the end of the operation of the cold air setting means in the standard setting. ' (see FIG. 3), a signal is output to the cold air setting termination means 3, and the cold air operation by the cold air setting means 4 is terminated.

As a result, the clothes in the drum 7 are neither hot nor cold, and can be taken out at an appropriate temperature, so your hands won't feel hot when you touch them. can do.

In addition, since the circulating air temperature detection sensor 11 detects the temperature of the circulating air and outputs a signal to the cold air setting termination means 3 to terminate the cold air operation by the cold air setting means 4, the influence of the environmental temperature at the setting location of the dryer Clothes can be taken out at the appropriate temperature without being exposed to heat.

Next, if the circulating air detection sensor 11 or the cold air setting means 4 breaks down, the circulating air temperature will not drop.
In such a case, since the circulating air detection sensor 11 does not detect the temperature drop of the circulating air, the abnormality notification means 13 determines that the circulating air detection sensor 11 is malfunctioning, and after operating the cold air setting means 4 for a predetermined time. In addition to stopping the system, it also notifies you of an abnormality.

Note that the function of the abnormality notification means 13 may be incorporated into the cold air setting termination means 3.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, the circulating air temperature detection means detects the temperature inside the drum during the cooling air operation, that is, the temperature of the clothing, and outputs the detected temperature to the cooling air setting means. However, since the operation of the cold air setting means is terminated, it is possible to provide a control device for a clothes dryer that brings the clothes to a temperature suitable for taking out when the cold air operation ends.

In addition, when the temperature of the circulating air does not drop even after supplying cold air due to a failure of the circulating air detection means, the abnormality notification means detects the abnormal state, ends the cold air operation after a predetermined time, and notifies the abnormality. Therefore, it is possible to provide a control device for a clothes dryer that can prevent clothes from being damaged by heating or from becoming too hot and difficult to take out.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a block diagram of a control device for a clothes dryer according to an embodiment of the present invention, FIG. 2 is a side sectional view showing the general structure of the dryer, and FIGS. FIG. 4 is an operational characteristic diagram explaining the control operation of the clothes dryer control device, FIG. 5 is a diagram showing the operation section of the clothes dryer, and FIG. 6 is a block diagram of a conventional clothes dryer control device. be. ■...Drying operation setting means, 2...Circulating air temperature detection means, 3...Cold air setting termination means, 4
...Cold air setting means, 7...Drum, 8
... Clothes, 11 ... Circulating air temperature detection sensor (circulating air temperature detection means), 13 ... Abnormality reporting means. Name of agent: Patent attorney Akira Okaji and two others
−Sakura” Sakuma

Claims (2)

[Claims] (1) Cold air setting means for supplying cold air into the drum after drying the clothes in the drum by the drying operation setting means;
Clothes comprising: circulating air temperature detecting means for detecting the circulating air temperature in the drum when the cold air is supplied; and cold air setting terminating means for terminating the operation of the cold air setting means based on the detection output of the circulating air temperature detecting means. Dryer control device. (2) An abnormality notification means for terminating the cold air operation after a predetermined time and notifying an abnormality when the temperature of the circulating air in the drum does not drop even if the cold air is supplied by the cold air setting means. clothes dryer control device.