JPS62238972A - Operation controller for refrigerator - 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 an operation control device for a refrigerator, and more particularly to an abnormality notification for a refrigerator in which the rotational speed of a compressor is changed to vary the cooling capacity.

BACKGROUND OF THE INVENTION In recent years, various refrigerators have been proposed that include a rotation speed control means and change the rotation speed of a compressor to vary the cooling capacity. In such a refrigerator, when an abnormality occurs in the rotation speed control means, the following control is performed. First of all, if the protection means of the rotation speed control means operates even once, it will be considered abnormal and all functions will stop, and secondly, even if the rotation speed control means operates once, it will continue to operate one after another at regular intervals. It is something to do. In addition, as a means of informing the user of an abnormality, a separate abnormality display is used to notify the user.

Problems to be Solved by the Invention However, the above method has the following problems. In the first method, even a simple malfunction is determined to be abnormal, and in the second method, the user does not know that there is an abnormality. Furthermore, the abnormality display has the disadvantage that it cannot be seen unless one is looking closely at the refrigerator, and it is difficult to notice it from a distance.

In view of the above-mentioned problems, the present invention provides an operation control device for a refrigerator that can more reliably detect an abnormality in the rotation speed control means and can notify a user of the abnormality.

Means for Solving the Problems In order to solve the above problems, the refrigerator operation control device of the present invention includes a timer that operates for a certain period of time after the compressor starts operating, and a timer that operates for a certain period of time after the compressor starts operating, and a timer that operates when the operating port of the protection means reaches a set value. It is equipped with a sounding means for making sounds.

According to the above-described structure, when an abnormality occurs in the rotation control means and a protection signal is generated, the present invention uses a counter to count the number of times the rotation control means operates. In addition, the timer operates for a certain period of time after the compressor starts operating, and if a protection signal is generated while the timer is operating, the counter value is further counted up. Clear the counter as if it were not present.

When the value of this counter reaches a set value, it is assumed that there is an abnormality such as a failure, and a sounding means is used to notify the user of the abnormality.

Embodiment Hereinafter, a refrigerator operation control device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a block diagram of a refrigerator operation control device according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an internal temperature detection means for detecting and transmitting the internal temperature of the refrigerator. Reference numeral 2 denotes a set temperature detection means that detects and sends out what temperature the inside temperature of the refrigerator is set to. 3 is a control means and an input terminal I. , Eng. .

and are connected to the internal temperature detection means 1 and the set temperature detection means 2, respectively. The 0 output terminal O0, which still has the output terminals O0, O1 and the input terminal Ii, outputs the rotational speed at which the compressor 4 operates to the rotational speed control means 5. 0 again
1 outputs a signal to the sounding means 6. Also engineering. detects an abnormality in the rotation speed control means 6 and inputs a signal from the protection means 7 to be sent. A timer 8 operates for a certain period of time after the compressor 4 starts operating. A counter 9 counts the number of times the protection means 7 operates, and when the timer 8 reaches a predetermined time, the count is cleared. 1Q is the volume adjusting means of the sound generating means 6.0 The operation of the refrigerator operation control device configured as described above will be explained below with reference to FIGS. 1 and 2.

FIG. 2 is a flowchart showing the operation of the block diagram shown in FIG.

At the step, the output of the set temperature detection means 2 is controlled by the control means 3.
0 input terminal, input to 0 next 3 steps 1
In step 2, the internal temperature input in the refrigerator is compared with the set temperature, and in step 4, the rotation speed determined by the comparison is sent to the output terminal ○ of the control means 3. Output by The compressor 4 is then operated at the rotation speed determined by the rotation speed control means 6. The control means 3 controls, for example, the temperature inside the refrigerator.
If the set temperature is the number of revolutions = 6400 revolutions, if the temperature inside the refrigerator is the set temperature, the number of revolutions = 3600 revolutions, if the temperature inside the refrigerator is the set temperature, the number of revolutions = 0 revolutions is output, and the number of revolutions is ○ In cases other than rotation, the compressor is assumed to be ON. Next, it is determined in 5 steps whether the compressor 4 is ON or not. If it is not ON, the timer 8 is cleared in 6 steps and the process returns to step 1. If it is ON, the process proceeds to step 7 and timer 8 is activated. Next, in step 8, the timer 8 determines whether or not the set time has elapsed, and if it is the set time, proceed to step 9 and clear the value of the counter 9, and if it is not the set time, proceed to the next step without executing step 9. Next, in step 10, it is determined whether or not there is a signal from the protection means 7, and if there is no protection signal, the process returns to step 1, and if there is a protection signal, the operation of the compressor 4 is turned off in step 11, that is, the rotation speed is decreased. 〇 Rotation. Next, in the 12th step, the value of the counter 9 is increased by +1 (count up). Next, in step 13, it is determined whether the value of counter 14 is the set value, and if it is not the set value, it waits for a certain period of time at step 14 and returns to step 1, and if it is the set value, it is checked in step 15. The output (for example, fan motor, heater, etc. (not shown)) is turned 1 OFF, and the sound generating means θ is operated in 16 steps.

As described above, according to this embodiment, the timer 8 operates for a certain period of time after the compressor 4 starts operating, and the protection means 7
By providing a counter 9 which counts the number of operations of the compressor 4 and which is cleared when the timer 8 reaches a predetermined time, the protection means 7 is activated within a certain period of time after the compressor 4 is turned on.
When the rotation speed control means 6 operates, it is determined that the rotation speed control means 6 is abnormal, and the counter 9 counts the number of times the rotation speed control means 6 operates, and when this count reaches the set value, it is assumed that the rotation speed control means 5 is malfunctioning and the full output is output. OFF, activates the sounding means 6, and informs the user that the rotation speed control means 6 is out of order. Therefore, there is no possibility of incorrect judgment of failure due to malfunction, etc., and it is determined that there is a complete failure. be able to. In addition, when an abnormality such as a malfunction occurs, the refrigerator can be detected even from a distance without having to look closely at the refrigerator, and the malfunction can be detected even from a distance, making it possible to promptly deal with the malfunction.

Furthermore, since the volume is variable, the volume can be adjusted even in a noisy place to provide notification, thereby improving the notification ability. In addition, in the embodiment, the sound generating means 6 may be used not only to make a sound such as a buzzer but also to notify by voice.

Effects of the Invention As described above, the present invention includes a sounding means for notifying an abnormality, a timer that operates for a certain period of time after the compressor starts operating, and a timer that counts the number of times the protection means operates and clears the count when the timer reaches a predetermined time. By providing a counter, it is possible to more reliably detect an abnormality in the rotational speed control means, and by notifying the user of the abnormality through sound, it is possible to notify the user of the abnormality. Furthermore, since the sound volume is variable, abnormality notifications can be made from a distance even in noisy locations.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a refrigerator operation control device according to an embodiment of the present invention, and FIG. 2 is a flowchart for explaining the operation of FIG. 1. 1... Internal temperature detection means, 2... Preset temperature detection means, 3... Control means, 5...
・Rotation speed control means, 6... Sound generation means, 7...
...Protective measures, 8...Timer, 9...
・Counter〇 Name of agent Patent attorney Toshio Nakao and 1 other person 1st
figure

Claims (1)

[Claims] (1) An internal temperature detection means for detecting the internal temperature of the refrigerator, a set temperature detection means for detecting the set temperature, a rotation speed control means for operating the compressor at a desired rotation speed, and a rotation speed control means for operating the compressor at a desired rotation speed. a protection means for detecting an abnormality; and a timer that operates for a certain period of time after the compressor starts operating;
a counter that counts the number of times the protection means operates and is cleared when the timer reaches a predetermined time; a sounding means that makes a sound in the event of an abnormality; An operation control device for a refrigerator, comprising: a control means for outputting a signal to the control means to determine the rotational speed at which the compressor operates, and when the counter reaches a predetermined value or more, the sounding means informs that there is an abnormality.