JPH0719695A - Controlling device of blower for cooling compressor of refrigerator - Google Patents

Abstract

PURPOSE:To increase a cooling effect and to enable prevention of a burning failure of a winding due to deterioration of the radiation performance of a compressor by a method wherein the compressor is stopped and a blower for cooling the compressor is operated for a prescribed time when a machine chamber temperature detector shows a prescribed temperature or above. CONSTITUTION:In a controlling device 17 of a blower for cooling a compressor, a temperature detector 3 and a machine chamber temperature detector 19 are connected to a microcomputer 18 having a timer 20 for stopping the compressor 4 for a prescribed time, when the machine chamber temperature detector 19 shows a prescribed temperature or above, and operating a blower 6 for cooling the compressor and wherein a driving means 5 for operating the compressor 4 and a driving means 7 for operating the blower 6 for cooling the compressor are connected to outputs of the microcomputer 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly to a refrigerator in which a compressor is cooled by a blower.

[0002]

2. Description of the Related Art Conventionally, operation control of a compressor cooling blower of a refrigerator is disclosed in Japanese Patent Application Laid-Open No. 2-136669.

The conventional configuration will be described below with reference to the drawings. FIG. 7 is a block diagram of a control device of a blower for cooling a compressor of a refrigerator of the related art. In FIG. 7, reference numeral 1 is a control device for a compressor cooling blower, which is provided in a control microcomputer 2 (hereinafter referred to as a microcomputer).
The temperature detector 3 is input. The output of the microcomputer 2 is connected to a drive means 5 for operating the compressor 4 and a drive circuit 7 for operating the compressor cooling blower 6, respectively.

FIG. 8 is a sectional view of a refrigerator provided with a control device for a compressor cooling blower having the above-mentioned circuit configuration.

In FIG. 8, reference numeral 8 is a refrigerator main body, and a partition wall 9 partitions a freezer compartment 10 in the upper part and a refrigerating compartment 11 in the lower part. A machine room 12 is provided below the refrigerator body 8. Here, the compressor 4 and the fan 6 for cooling the compressor are provided in the machine chamber 12.
A condenser 13 is provided inside the outer wall of the refrigerator body 8.

Reference numeral 14 is a cooler, and 15 is a suction pipe. The compressor 4, the condenser 13, the pressure reducer (not shown), and the cooler 1 are provided.
4. The suction pipe 15 constitutes a series of refrigeration cycles.
Reference numeral 16 denotes the freezer compartment 10 and the refrigerator compartment 11 for the cooler 1
It is a blower for forcedly convection the air cooled in 4. Reference numeral 3 is a temperature detector for detecting the temperature in the freezer compartment 10 and instructing the operation of the compressor 4 and the blower 16. Further, the control device 1 for the compressor cooling blower, which constitutes the above-mentioned circuit, is attached to the rear surface of the refrigerator body 8.

The operation of the control device for the compressor cooling blower of the refrigerator configured as described above will be described below with reference to the flowchart of FIG.

FIG. 9 is a flowchart showing the entire control program stored in the microcomputer 2. When the power is turned on, in step 100, all the data of the microcomputer 2 is cleared and initialization is performed. Next, in step 101, the state of the temperature detector 3 is read, and if the temperature of the freezer compartment 10 is higher than the set value, a signal is output to the driving means 5 to operate the compressor 4 in step 102, and the cooler 14 is activated. Performs cooling action.

At the same time, the blower 16 is operated and the air cooled by the cooler 14 is forcedly ventilated into the freezing compartment 10 and the refrigerating compartment 11. Next, in step 103, a signal is output to the drive means 7 to operate the compressor cooling blower 6, and the compressor 4 is operated.
Blow to. For this reason, the temperature of the surface of the compressor 4 is lowered and the winding failure of the winding due to the deterioration of the heat radiation performance is suppressed.

After that, when the freezer compartment 10 is cooled to a predetermined temperature, it is judged in step 101 that the temperature detector 3 is low, and in step 104, the signal of the driving means 5 is sent to stop the compressor 4 and the blower 16. Cut off. Then, in step 105, the signal of the driving means 7 is cut off so as to stop the compressor cooling blower 6.

Thereafter, this operation is repeated to perform a normal cooling operation.

[0012]

However, in the above-mentioned conventional structure, when the door temperature is increased and the interior temperature rises frequently in summer, when the outside air temperature is high, the compressor operates continuously and the machine room temperature rises. Therefore, even if the blower for cooling the compressor is operated in synchronization with the compressor, the cooling effect does not change, and there is a drawback that a seizure failure of the winding is induced due to deterioration of heat dissipation performance.

SUMMARY OF THE INVENTION The present invention solves the conventional problems, and an object of the present invention is to prevent a burn-in failure of a winding due to deterioration of heat radiation performance of the compressor when the compressor is frequently used.

[0014]

To achieve this object, a control device for a compressor cooling blower of a refrigerator according to the present invention comprises a compressor cooling blower for cooling the compressor and a temperature inside a machine room for housing the compressor. A machine room temperature detector for detecting the above is provided, and when the machine room temperature detector is equal to or higher than a predetermined temperature, the compressor is stopped for a predetermined time and the compressor cooling blower is operated.

Further, a compressor cooling blower for cooling the compressor and a machine room temperature detector for detecting the temperature of the machine room accommodating the compressor are provided. When the machine room temperature detector is above a predetermined temperature, the compressor is provided. Is stopped and the blower for cooling the compressor is operated up to a predetermined temperature or lower.

[0016]

The control device for the blower for cooling the compressor of the refrigerator according to the present invention has a cooling effect because the compressor is blown for a predetermined time when the temperature of the machine room temperature detector is higher than a predetermined temperature to operate the blower for cooling the compressor. As a result, the temperature of the compressor surface increases and the temperature of the compressor decreases, which prevents the winding from being burned.

Further, when the temperature of the machine room temperature is higher than a predetermined temperature, the compressor is stopped and the blower for cooling the compressor is operated. Therefore, the cooling effect is increased, the temperature of the surface of the compressor is decreased, and the winding of the winding is burned. It can prevent breakdown.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a control device for a compressor cooling fan of a refrigerator according to the present invention will be described below with reference to FIGS. It should be noted that the same configurations as those of the conventional one are denoted by the same reference numerals and detailed description thereof will be omitted.

FIG. 1 is a block diagram of a controller for a compressor cooling fan of a refrigerator showing an embodiment of the present invention.

In FIG. 1, reference numeral 17 denotes a control device for a compressor cooling blower, which is a machine room 1 for accommodating a compressor 4 in a control microcomputer 18 (hereinafter referred to as a microcomputer).
A machine room temperature detector 19 for detecting the internal temperature is input. In the microcomputer 18, the machine room temperature detector 1
It has a timer 20 for stopping the compressor for a predetermined time when the temperature of 9 exceeds a predetermined temperature and operating the blower 6 for cooling the compressor.

FIG. 2 is a cross-sectional view of a refrigerator equipped with a control device for the compressor cooling blower having the above-mentioned circuit configuration.
2, a machine room temperature detector 19 is attached, and a controller 17 for a compressor cooling blower that constitutes the above-mentioned circuit is attached to the rear surface of the refrigerator main body 8.

The operation of the compressor cooling fan for the refrigerator constructed as described above will be described below with reference to the flowchart of FIG.

When the power is turned on, in step 200, all data of the microcomputer 18 are cleared and initialization is performed. Next, in step 201, the state of the temperature detector 3 is read, and if the temperature of the freezer compartment 10 is higher than the set value, a signal is output to the driving means 5 to operate the compressor 4 in step 202, and the cooler 14 is activated. Performs cooling action. At the same time, the blower 16 is operated and the cool air cooled by the cooler 14 is forcedly ventilated into the freezer compartment 10 and the refrigerating compartment 11. Next, in step 203, in order to operate the compressor cooling blower 6, a signal is output to the drive means 7 to blow air to the compressor 4 and the temperature of the surface of the compressor 4 is lowered.

Then, in step 204, the state of the machine room temperature detector 19 is read, and if it is, for example, 70 ° C. or lower, the process returns to step 201.

After that, when the freezer compartment 10 is cooled to a predetermined temperature, it is judged in step 201 that the temperature detector 3 is low, and in step 205, the signal of the driving means 5 is sent to stop the compressor 4 and the blower 16. Cut off. Then, in step 206, the signal of the driving means 7 is cut off so as to stop the blower 6 for cooling the compressor.

While the normal cooling operation is performed by repeating such operations, when the door temperature is increased and the interior temperature rises frequently in summer when the outside air temperature is high, the compressor operates continuously and the machine room 12 Temperature rises, for example step 20
If the temperature rises to 80 ° C. or higher in step 4, the signal of the driving means 5 is shut off in step 207 to stop the compressor 4 and the blower 16. Next, in step 208, a signal is output to the drive means 7 to operate the compressor cooling blower 6 and forced air is blown to the compressor 4 to lower the temperature of the surface of the compressor 4. Then, in step 209, the operation of step 207 to step 209 is repeated until the timer 20 has accumulated 30 minutes, for example, and the compressor 4 is forcibly cooled. In step 209, when the timer 20 has accumulated 30 minutes, the process returns to step 201, The normal cooling action is performed again.

Therefore, when the temperature in the machine room 12 rises, the compressor 4 is stopped for a predetermined time and the blower 6 for cooling the compressor is operated, so that the cooling effect is increased and the temperature of the surface of the compressor 4 is rapidly increased. Therefore, the winding failure of the winding due to the deterioration of the heat radiation performance is suppressed.

A second embodiment of the control device for the blower for cooling the compressor of the refrigerator according to the present invention will be described with reference to FIGS. 4 to 6. Regarding the same configuration as the conventional one,
The same reference numerals are given and detailed description is omitted.

FIG. 4 is a block diagram of a control device for a compressor cooling fan of a refrigerator showing an embodiment of the present invention.

In FIG. 4, reference numeral 57 denotes a control device for a compressor cooling blower, which is a machine room 1 for storing the compressor 4 in a control microcomputer 58 (hereinafter referred to as a microcomputer).
A machine room temperature detector 59 for detecting the internal temperature is input.

FIG. 5 is a cross-sectional view of a refrigerator equipped with a control device for the compressor cooling blower having the above-mentioned circuit configuration.
2, a machine room temperature detector 59 is attached, and a controller 57 for a compressor cooling blower, which constitutes the above-mentioned circuit, is attached to the rear surface of the refrigerator main body 8.

The operation of the compressor cooling fan of the refrigerator configured as described above will be described below with reference to the flowchart of FIG.

When the power is turned on, in step 300, all data of the microcomputer 58 is cleared and initialization is performed. Next, at step 301, the state of the temperature detector 3 is read, and if the temperature of the freezer compartment 10 is higher than the set value, at step 302 a signal is output to the drive means 5 to operate the compressor 4, and the cooler 14 Performs cooling action. At the same time, the blower 16 is operated and the cool air cooled by the cooler 14 is forcedly ventilated into the freezer compartment 10 and the refrigerating compartment 11. Next, in step 303, a signal is output to the driving means 7 to operate the compressor cooling blower 6 and the air is blown to the compressor 4 to lower the surface temperature of the compressor 4.

Then, in step 304, the state of the machine room temperature detector 19 is read, and if it is, for example, 70 ° C. or lower, the process returns to step 301.

After that, when the freezer compartment 10 is cooled to a predetermined temperature, it is judged in step 301 that the temperature detector 3 is low, and in step 305, the signal of the driving means 5 is sent to stop the compressor 4 and the blower 16. Cut off. Then, in step 306, the signal of the driving means 7 is cut off so as to stop the compressor cooling blower 6.

While the normal cooling action is performed by repeating such actions, when the door temperature is frequently opened and closed and the internal temperature rises in summer when the outside air temperature is high, the compressor is in continuous operation and the machine room 12 Temperature rises, for example step 30
If the temperature exceeds 80 ° C. in step 4, the signal of the driving means 5 is cut off in step 307 to stop the compressor 4 and the blower 16.

Next, in step 308, a signal is output to the driving means 7 to operate the compressor cooling blower 6, and the compressor 4 is operated.
Then, the temperature of the surface of the compressor 4 drops. Then, in step 309, the temperature of the machine room temperature detector 59 is reduced to, for example, 60 ° C. or less, from step 307 to step 30.
9 operation is repeated, and the machine room temperature detector 59 is 60 ° C.
If the following occurs, the process returns to step 301, and the normal cooling action is performed again.

Therefore, when the temperature inside the machine room 12 rises, the compressor 4 is stopped and the blower 6 for cooling the compressor is operated, so that the cooling effect is increased and the temperature of the surface of the compressor 4 is rapidly lowered. As a result, the burn-in failure of the winding due to the deterioration of the heat radiation performance is suppressed.

[0039]

As is apparent from the above embodiments, according to the present invention, a refrigeration cycle including a compressor, a condenser, a cooler and a suction pipe, a temperature detector for detecting the temperature inside the refrigerator, and the compression There is a compressor cooling blower that is provided in the machine room that houses the compressor and that forcibly cools the compressor in synchronization with the operation of the compressor, and a machine room temperature detector that detects the temperature inside the machine room that houses the compressor. However, when the machine room temperature detector is above a predetermined temperature, since it is provided with a controller for a compressor cooling blower of a refrigerator that stops the compressor for a predetermined time and rotates the compressor cooling blower, When the temperature inside the warehouse rises due to frequent door opening and closing, such as in summer when the outside air temperature is high, the compressor operates continuously, and when the temperature inside the machine rises, the compressor is stopped for a predetermined time and the blower for cooling the compressor is operated. , The cooling effect increases The baking failure of the windings due to the heat radiation performance deterioration of the compressor can be prevented, it has a great effect.

Further, a refrigeration cycle consisting of a compressor, a condenser, a cooler and a suction pipe, a temperature detector for detecting the temperature inside the refrigerator, and a machine room for accommodating the compressor to operate the compressor. A compressor cooling blower for synchronously forcibly cooling the compressor and a machine room temperature detector for detecting the temperature of the machine room accommodating the compressor are provided, and when the machine room temperature detector is at a predetermined temperature or higher, Since it is equipped with a control device for the compressor cooling blower of the refrigerator that stops the compressor and rotates the compressor cooling blower to a predetermined temperature or less, the door is frequently opened and closed such as in summer when the outside air temperature is high. When the internal temperature rises, the compressor operates continuously, and when the temperature inside the machine rises, the compressor is stopped and the blower for cooling the compressor is operated.Therefore, the cooling effect increases and the heat dissipation performance of the compressor deteriorates. Line burning It is possible to prevent impaired to advance, has significant effects.

[Brief description of drawings]

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

FIG. 2 is a sectional view of the refrigerator.

[Fig. 3] Flow chart of the refrigerator

FIG. 4 is a block diagram of a control circuit of a refrigerator showing an embodiment of the present invention.

FIG. 5 is a sectional view of the refrigerator.

FIG. 6 is a flowchart of the refrigerator.

FIG. 7 is a block diagram of a control circuit of a refrigerator showing a conventional example.

FIG. 8 is a sectional view of the refrigerator.

FIG. 9 is a flowchart of the refrigerator.

[Explanation of symbols]

 3 Temperature Detector 4 Compressor 6 Compressor Cooling Blower 12 Machine Room 13 Condenser 14 Cooler 15 Suction Pipe 17 Compressor Cooling Blower Controller 18 Microcomputer 19 Machine Room Temperature Detector 20 Timer 57 Compressor Cooling Blower control device 58 Microcomputer 59 Machine room temperature detector

Claims (2)

[Claims] 1. A refrigeration cycle including a compressor, a condenser, a cooler and a suction pipe, a temperature detector for detecting a temperature inside the refrigerator, and an operation of the compressor provided in a machine room accommodating the compressor. A compressor cooling blower that synchronously forcibly cools the compressor, a machine room temperature detector that detects the temperature of the machine room that houses the compressor, and a predetermined time when the machine room temperature detector is equal to or higher than a predetermined temperature. A control device for a compressor cooling blower of a refrigerator, comprising: a control means for stopping the compressor and rotating the compressor cooling blower. 2. A refrigeration cycle composed of a compressor, a condenser, a cooler and a suction pipe, a temperature detector for detecting a temperature inside the refrigerator, and an operation of the compressor provided in a machine room accommodating the compressor. A compressor cooling blower that synchronously forcibly cools the compressor, a machine room temperature detector that detects the temperature of the machine room that houses the compressor, and the compressor when the machine room temperature detector is at a predetermined temperature or higher. A control device for a compressor cooling blower of a refrigerator, comprising: a control means for stopping the compressor and rotating the compressor cooling blower to a predetermined temperature or lower.