JPH074809A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent a rotary compressor from receiving such a bad influence that the rotary compressor becomes at an abnormally high temperature by a malfunction because of noise and causes trouble, in regard to control of a blower for cooling the compressor. CONSTITUTION:A control circuit for a refrigerator is composed of a detective means 8 for detecting temperature in a refrigerating chamber, a rotary compressor 10, a blower 11 for cooling the rotary compressor 10, a detective means 12 for detecting temperature of the air outside, a control means 18 consisting of an external information-storing means 16 and an operational sequence- determining means 19, a drive means 14 for driving the rotary compressor 10, and a drive means 15 for driving the blower 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to operation control in a refrigerator.

[0002]

2. Description of the Related Art In recent years, models using a microcomputer have become the mainstream for operation control of refrigerators.

Conventionally, this type of operation control is disclosed in Japanese Patent Laid-Open No. 2-13.
The structure shown in Japanese Patent No. 6669 has been general. The configuration will be described below with reference to FIGS. 1
Is a refrigerator body, and air cooled by the cooler 4 housed in the cooling chamber 3 formed in the partition wall 2 is cooled by the blower 5 in the freezing chamber 6
And a forced ventilation type refrigerator that circulates in the refrigerator compartment 7.

Reference numeral 8 is a freezing room temperature detecting means such as a thermistor for detecting the temperature of the freezing room 6 of the refrigerator.
An operation signal for operating the rotary compressor 10 therein is issued. 11
Is a compressor cooling blower for cooling the rotary compressor,
Reference numeral 12 is an outside air temperature detecting means such as a thermistor for detecting the outside air temperature.

Next, the control circuit will be described. Reference numeral 13 is a control means, and the freezing room temperature detection means 8 and the outside air temperature detection means 12 are connected to its input terminals. Driving means 14 for moving the rotary compressor 10 and driving means 15 for moving the compressor cooling blower 11 are connected to the output terminal. The control means 13 is composed of an external information storage means 16, an operation order determination means 17, etc., and the operation order determination means 17 stores a confirmation order of the operation and a program for determining the next operation depending on the state at that time. ing.

The operation of this configuration will be described with reference to FIG. When the power is turned on, in step 1, all data in the external information storage means 16 is cleared and initialization is performed. Next, in step 2, the states of the freezing room temperature detecting means 8 and the outside air temperature detecting means 12 are input, and if the temperature of the freezing room temperature detecting means 8 is lower than the set value in step 3, the process proceeds to step 4 and the rotary compressor 10 and the state memory of the compressor cooling blower 11 are set to ON and O
Reset FF. If the temperature of the freezer compartment temperature detecting means 8 is higher than the set value in step 3, the operation proceeds to step 5, and if the temperature of the outside air temperature detecting means 12 is higher than the set value, the operation proceeds to step 6 to cool the rotary compressor 10 and the compressor. Blower 1
Set the state memory of 1 to ON and reset OFF.

In step 5, the outside air temperature detecting means 12
If the temperature is lower than the set value, the process proceeds to step 7 where the state memory of the rotary compressor 10 is set to ON and reset to OFF, and then the state memory of the compressor cooling blower is reset to ON and turned OFF in step 8. set. Step 4, step 6, and step 8 all proceed to step 9 to output the state memory of the rotary compressor 10 and the compressor cooling blower 11 to output the rotary compressor 10 and the compressor cooling blower 11.
Is turned on or off, and the process returns to step 2 to perform the normal cooling action.

[0008]

However, when the data in the external information storage means 16 becomes abnormal due to noise or the like during such cooling operation, for example, the external information storage means 16 collapses in step 5, and the outside air temperature is detected. When it is judged that the temperature of the means 12 is actually high but low, the compressor cooling blower 11 does not move and the temperature of the rotary compressor 10 becomes abnormally high, which causes a defect of the rotary compressor 10. .

The present invention is intended to solve the above problems,
The purpose is to prevent the rotary compressor from being adversely affected by abnormal operation of the control circuit due to noise or the like.

[0010]

In order to solve the above problems, a refrigerator according to the present invention outputs a state memory of a rotary compressor and a compressor cooling blower to turn on or off the rotary compressor and the compressor cooling blower. After that, the outdoor air temperature detecting means, the rotary compressor state memory, and the compressor cooling blower state memory are checked again, and if the compressor cooling blower is off while the rotary compressor is on at a high outside temperature, it is judged as abnormal. It is configured to make a judgment and return the refrigerator to the initial state when the power is turned on.

[0011]

According to the present invention, with the above-described structure, after outputting the state memory of the rotary compressor and the compressor cooling blower to turn on or off the rotary compressor and the compressor cooling blower, the outside air temperature detecting means and the rotary compression are again provided. Check the machine status memory and the compressor cooling blower status memory, and if the compressor cooling blower is off while the rotary compressor is on during high outside air, determine that there is an error and set the refrigerator to the initial state when the power is turned on. .

Therefore, since the correct cooling operation is performed again, it is possible to prevent adverse effects on the rotary compressor, such as abnormal operation that results in abnormally high temperature of the rotary compressor and a failure.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. It should be noted that the same components as those of the related art are designated by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described.

In the figure, the control means 18 is composed of an external information storage means 16, an operation order determination means 19, etc., and the operation order determination means 19 determines the next operation depending on the order of confirmation of the operation and the state at that time. Contains the program.

The operation of this structure will be described with reference to FIG. In addition, from step 1 to step 9,
Since it is the same as the conventional example, it is omitted. When the temperature of the outside air temperature detecting means 12 is lower than the set value in step 10, the process returns to step 2, and when it is higher than the set value, the process proceeds to step 11. Step 11
Then, the state memory of the rotary compressor 10 is checked, and if ON is not set, the process returns to step 2, and if ON is set, the process proceeds to step 12.

In step 12, the state memory of the compressor cooling blower 11 is checked, and if ON is set, the process returns to step 2 to start normal cooling operation. If ON is not set, the process returns to step 1 to power on the refrigerator. Since it is set to the initial state at the time, it is possible to prevent adverse effects on the rotary compressor 10 such as abnormal operation of the control circuit due to noise or the like, which causes the rotary compressor 10 to become abnormally high in temperature and lead to a defect.

[0017]

As described above, according to the refrigerator of the present invention, after outputting the state memory of the rotary compressor and the blower for cooling the compressor to turn on or off the rotary compressor and the blower for cooling the compressor, the outside air temperature is again set. The detector, the rotary compressor state memory, and the compressor cooling blower state memory are checked, and the compressor cooling blower is turned off while the rotary compressor is turned on at the time of high outside air.
If it is F, it is judged to be abnormal and the refrigerator is set to the initial state when the power is turned on. Therefore, abnormal operation of the control circuit due to noise or the like causes the rotary compressor to become abnormally hot and lead to a failure. It is possible to prevent adverse effects on the product, and its practical effect is great.

[Brief description of drawings]

FIG. 1 is a control circuit diagram of a refrigerator showing an embodiment of the present invention.

[Fig. 2] Flow chart of the refrigerator

FIG. 3 is a sectional view of the refrigerator.

[Fig. 4] Machine room diagram of the refrigerator

FIG. 5 is a control circuit diagram of a refrigerator showing a conventional example.

FIG. 6 is a flowchart of the refrigerator.

FIG. 7 is a sectional view of the refrigerator.

[Figure 8] Machine room diagram of the refrigerator

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 6 Freezing room 7 Refrigerating room 8 Freezing room temperature detection means 10 Rotary compressor 11 Compressor cooling blower 12 Outside air temperature detection means

Claims (1)

[Claims] 1. A freezer compartment, a refrigerating compartment, a freezer compartment temperature detecting means for detecting the temperature of the freezer compartment to stop the operation of the rotary compressor and the compressor cooling blower of the refrigeration cycle, and the outside air temperature. If the blower for cooling the compressor is stopped during the operation of the rotary compressor when the temperature of the outside air temperature detecting means and the outside air temperature detecting means is high, it is determined to be abnormal and the refrigerator is set to the initial state when the power is turned on. Refrigerator with control means.