JPH07127956A - Refrigerator - Google Patents

Abstract

PURPOSE:To dispose a temperature sensor in a position, where a temperature of a compressor can be precisely detected, to judge an abnormality of a fan motor on the basis of a temperature detected by the temperature sensor and to operate the compressor in a reduced load condition on the basis of the temperature detected by the temperature sensor when the fan motor is judged to be abnormal. CONSTITUTION:A pipe AI on an inlet side of a desuperheater A of a compressor 1 is disposed outside a projected area B of a fan S in a direction toward the compressor, and a temperature sensor 6 is mounted to the pipe AI on the inlet side. A controller for controlling an operation of the compressor comprises abnormality judging means for judging an abnormality of a fan motor on the basis of a temperature of the compressor 1 detected by the temperature sensor, and drive control means for driving the compressor l so as to have its temperature ranging within a predetermined temperature range when the fan motor is judged by the abnormality judging means to be abnormal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator in which a machine room equipped with a compressor, a condenser, and a blower is arranged at the bottom.

[0002]

2. Description of the Related Art As a refrigerator in which a compressor, a condenser and a blower are arranged in a machine room, for example, Japanese Patent Publication No. 2-59393.
As disclosed in Japanese Unexamined Patent Publication (Kokai), etc., there is a compressor equipped with a cooling fan that cools the compressor, and a fan motor that drives the cooling fan. A filter is arranged on the air suction side (air inlet surface) of the condenser, and temperature detecting means for accurately determining clogging of the filter is attached to the outlet pipe of the condenser. When performing the cooling operation in the refrigerator, the compressor, the cooling fan, and the internal fan are operated.

Here, the cooling capacity of the refrigerator is greatly affected by the capacities of the compressor and the fan for circulating the inside of the refrigerator (the fan inside the refrigerator). Especially, the compressor is subjected to the pull-down operation in which the heaviest load is applied to the compressor. It is generally preferred that the overload protection relay (overload relay = OLR) has a large capacity so that it does not operate. However, if a compressor having a too large cooling capacity is selected, not only the cost becomes high, but also the capacity becomes excessive during the cooling operation after the pull-down operation, which does not require so much capacity.
That is, even if the pull-down operation is good, the cooling efficiency is reduced during the cooling operation, and a compressor with a large capacity requires only a large amount of electric power, which is uneconomical. The aforementioned pull-down operation is, for example, when the storage chamber is cooled from a state in which the storage chamber is hardly cooled, such as when the power is turned on after the refrigerator is installed or when the refrigerator has not been used for a while. .

Generally, a high-temperature and high-pressure gas refrigerant compressed by a compressor is liquefied in a path leading to a cooler (evaporator),
While this liquefied refrigerant exchanges heat with the air circulating in the storage chamber while passing through the evaporator, it is gasified again and returned to the compressor, but when the storage chamber is not cooled, it is circulated. Since the temperature of the generated air is high, the liquefied refrigerant is likely to be gasified in the evaporator, so that a large amount of the liquid refrigerant is gasified and the pressure of the gas returning to the compressor becomes high.
Therefore, the kinetic energy required for a compressor that must compress a high pressure gas refrigerant at a predetermined ratio (generally expressed as torque, the magnitude of this required torque is called the load applied to the compressor). Is a big one. If the load applied to the compressor is large, the amount of electric power (especially current) required to operate the compressor will be large, and if the large current causes the temperature to rise and exceeds a predetermined value, the overload prevention relay (OLR) operates, Compressor stops. That is,
When the current and / or temperature detected by the overload relay exceeds a predetermined value, the compressor is stopped to protect the compressor.

On the other hand, after the pull-down operation, since the air circulating in the storage chamber is cooled to some extent by the heat exchange during the pull-down operation, the liquid refrigerant passing through the evaporator is less likely to be gasified as compared with the pull-down operation and a small amount of liquid refrigerant is generated. It is only gasified, and the pressure of the gas refrigerant returning to the compressor is lower than that during pull-down operation. For this reason, the load on the compressor is small, and it does not require much capacity during normal cooling operation. However, due to recent CFC regulations, the refrigerant to be used is changed from the regulated refrigerant R-12 to the unregulated refrigerant R-22, and when this refrigerant is used, the relationship between the refrigerant evaporation temperature and the specific heat of the refrigerant, etc. The temperature of the gas refrigerant discharged from the compressor is higher than that when the conventional refrigerant is used, and as a result, the temperature rise of the compressor is apt to be more intense than before. Since the temperature of the compressor tends to rise, when the temperature exceeds a predetermined temperature, the overload relay is activated and the compressor is likely to frequently stop operation. Repeating this shutdown means that the load on the compressor will be further increased, and even if the compressor, which is heavily burdened by the temperature rise, is frequently shut down, the life of the compressor will be further increased. It tends to be shorter.

[0006]

However, the above-mentioned conventional refrigerator detects the temperature of the compressor and controls the compressor based on the detected temperature. However, it is usually an overload mounted on the body of the compressor. Since the relay is cooled by the wind of the cooling fan, it cannot detect the accurate temperature of the compressor body. Moreover, if the overload relay cannot detect an abnormality in the fan motor, and even if a drive signal is output to the fan motor, if the fan motor fails to rotate due to, for example, disconnection or lock, it occurs. Since the compressor cannot be forcibly cooled, the temperature of the main body of the compressor rises quickly and the compressor is likely to exceed a predetermined temperature due to continuous operation of the compressor. As a result, the compressor stops, so that the cooling operation inside the refrigerator also stops. Furthermore, if the temperature drops due to the stop of the compressor, the compressor is restarted and the same operation is repeated thereafter, and the compressor is repeatedly stopped without being cooled, so the stored foods may be damaged or the ice melts. There was a problem that caused a mechanical failure.

Therefore, the present invention has been made in order to solve such a problem. A temperature sensor is arranged at a position where the temperature of the compressor can be accurately detected, and an abnormality of the fan motor is detected by this temperature sensor. While judging by the detected temperature,
It is an object of the present invention to provide a refrigerator that can operate a compressor in a light load state based on the temperature detected by the temperature sensor when it is determined that the fan motor is abnormal.

[0008]

SUMMARY OF THE INVENTION The present invention is directed to a compressor having a dissuperheater, a fan having a fan and a fan motor for cooling the compressor, a temperature sensor for detecting the temperature of the compressor, and In a refrigerator equipped with a controller that controls the operation of the compressor based on the temperature detected by a temperature sensor, the pipe on the inlet side of the dissuperheater is located outside the projection portion of the blower toward the compressor. And the temperature sensor is attached to the pipe on the inlet side, and the control device is an abnormality determining means for determining an abnormality of the fan motor based on the temperature of the compressor detected by the temperature sensor. Drive control means for driving the compressor so that its temperature falls within a predetermined temperature range when the fan motor is determined to be abnormal by the abnormality determination means It is intended to provide a refrigerator with a.

[0009]

[Function] Since the inlet side pipe of the dissuperheater is located outside the projected portion of the blower toward the compressor, the inlet side pipe is less likely to be hit by the blower, and the temperature of the pipe is reduced. By installing the sensor,
The temperature of the gas refrigerant discharged from the compressor can be accurately detected, and this temperature can be used as the temperature of the compressor, and based on this detected temperature, the fan motor abnormality can be determined by the control device and the fan motor can be determined. If it is determined that the compressor is abnormal, the drive control means drives the compressor so that its temperature is within a predetermined temperature range, so that the burden on the compressor can be reduced and the cooling operation can be continued. The compressor can be protected because the abnormal temperature rise of the machine can be prevented and the durability can be improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are a plan view of a machine room and a perspective view of a machine unit of a refrigerator according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is a rotary compressor (hereinafter simply referred to as compressor) installed in a machine room 2a provided in a lower portion of a main body 2 such as a refrigerator, and 3 is a rear surface of the machine room 2a for cooling the compressor 1. A cooling fan 4 for taking in the outside air from the outside air intake 100A of the cover 100 and circulating the air toward the exhaust port 100B, 4 is a fan motor for driving the cooling fan 3, and 5 is a refrigerant pipe line such as a condenser. . That is, in terms of the flow of wind, the fan motor 4, the cooling fan 3, the compressor 1, and the condenser 5 are arranged in this order, and the cooling fan 3 and the fan motor 4 constitute a blower S.

Reference numeral A is a dissuper heater provided so as to heat-exchange (cool) the discharged gas refrigerant whose temperature has risen due to the compression operation of the compressor 1 and then return it to the compressor 1 again to cool the compressor motor. At least the pipe AI on the inlet side of the dissuperheater A is located outside the projected portion B of the blower S toward the compressor 1 and has a temperature sensor 6 to be described later.
Is attached to the pipe AI on the inlet side of the dissuperheater A.

Reference numeral 6 is a pipe AI on the inlet side of the dissuperheater A of the compressor 1 for detecting the temperature of the compressor 1.
Is a temperature sensor attached to. This temperature sensor 6
Is press-fitted and fixed in a metal cylinder fixed to the inlet side pipe AI in a heat exchange relationship, and the temperature information detected by the temperature sensor 6 is stored in a predetermined position (for example, the upper rear surface of the main body) of the refrigerator. It is provided and is input to the control device 7 having the configuration shown in FIG.

That is, since the pipe AI on the inlet side of the dissuperheater A is located outside the projected portion B of the blower S toward the compressor, the wind on the blower S hits the pipe AI on the inlet side. It gets harder. By attaching the temperature sensor 6 to the pipe AI, the temperature of the discharge gas refrigerant of the compressor 1 which is not cooled so much because it is not hit by the wind is detected as accurately as possible, and this detected temperature is used as the temperature of the compressor 1 instead. If the abnormal temperature rise of the compressor is detected promptly and it is utilized for the control of the fail-safe operation of the compressor when the abnormality is detected, the life of the compressor will be extended even if the refrigerant is switched to the non-regulated refrigerant. Not shortened, the durability of the compressor can be improved.

In FIG. 3, reference numeral 7 is a control device, and the control device 7 is an abnormality determination means for determining an abnormality of the fan motor based on the temperature of the compressor detected by a temperature sensor 6. Drive control means for driving the compressor so that its temperature falls within a predetermined temperature range when the abnormality determination means determines that the fan motor is abnormal. Further, the control device 7 includes a temperature sensor 6
A first temperature measuring unit 8 for measuring the temperature of the compressor 1 from the temperature information input by the
First having a second timer TMB and a third timer TMD
It has a time measuring unit 9.

Here, the first timer TMA is set so that the first predetermined time of 40 minutes is set in accordance with the temperature information from the temperature sensor 6 input to the first temperature measuring unit 8 at a predetermined timing. When the first temperature measuring unit 8 detects that the temperature of the compressor 1 has reached a predetermined temperature, for example, 105 ° C., it starts measuring whether or not this state continues for 40 minutes. There is. Then, when this state has passed 40 minutes, the first timer TMA outputs the first abnormality detection signal to the control unit 10.

On the other hand, the control unit 10 has both functions of an abnormality judging means and a drive control means, and when the first abnormality detection signal is received, the second timer TMB receives a second signal.
A predetermined time of 60 minutes is set and the fan motor 4 is stopped during this period, and after 60 minutes have elapsed, a detection operation for detecting a temperature rise of the compressor 1 is performed. And
At this time, if the temperature rise of the compressor 1 exceeds a predetermined value, it is judged that this temperature rise is due to the stop of the fan motor 4, and from that point onward, the fan motor 4 operates normally. I try to judge that I was doing it. On the other hand, when the temperature rise of the compressor 1 becomes less than or equal to the predetermined value, the fan motor 4 has not been normally operated until then, and therefore it is determined that the temperature of the compressor 1 has exceeded 105 ° C. ing.

It should be noted that the fan motor 4 cannot be determined to be abnormal by one-time determination, so in the present embodiment, if it is determined that the fan motor is abnormal, this detection operation is performed a predetermined number of times, for example, three times in succession. Also in the detection operation, when an abnormality of the fan motor 4 is detected, it is determined that the fan motor 4 is abnormal. For this reason, the control unit 10 outputs a drive signal to the fan motor 4 after performing the first detection operation, and outputs to the third timer TMD, for example, 12
After setting 0 minute, the fan motor 4 is rotated for 120 minutes, and the temperature of the compressor 1 after this is checked.

If the fan motor 4 is normal and the temperature of the compressor 1 exceeds 105 ° C. for some reason, after 120 minutes, the temperature of the compressor 1 will drop below 105 ° C. On the other hand, even after 120 minutes, the compressor 1
If the temperature of the compressor exceeds 105 ° C., this state continues for 40 minutes, and the temperature change of the compressor 1 after stopping the fan motor 4 for 60 minutes is less than a predetermined value, there is a high possibility that the fan motor 4 is abnormal. It is judged that this abnormality detection operation
It is determined that the fan motor 4 is abnormal when the abnormality is detected in the fan motor 4 three times in succession.

By the way, in this way, the fan motor 4
If it is determined that the abnormality has occurred, the control unit 10 causes the abnormality display unit 7
While the LED of a is turned on, the control unit 10 plays a role as a drive control means, and the temperature of the compressor 1 is kept within a predetermined temperature range, for example, 80 ° C. so that the compressor 1 is not overloaded. The on / off drive is performed so that the temperature falls within the range of 120 ° C. As a result, even if the fan motor 4 is determined to be abnormal and the means for cooling the compressor 1 is not operating, the cooling load can be reduced and the cooling operation can be continued.

On the other hand, the control device 7 has a second temperature measuring section 12 for measuring the temperature inside the refrigerator or the like from the temperature information inputted from the F sensor 11 arranged inside the main body 2 as shown in FIG. There is. Then, the control unit 10 controls the driving of the compressor 1 and the fan motor 4 according to the temperature of the load based on the measurement result input from the second temperature measurement unit 12.

Further, the control device 7 has a second time measuring section 13 for integrating the driving time of the compressor 1.
When the driving time of the compressor 1 reaches 8 hours, the time measuring unit 13 outputs a signal indicating this to the control unit 10. When this signal is input, the controller 10 turns on the defrost heater (DEF) 14 to perform defrost.

When the detection signal from the second time measuring unit 13 is input during the first or more inspection, the control unit 10 stops the compressor 1 and the fan motor 4 to give priority to defrost. However, since the abnormality detection operation is prioritized after the second abnormality detection operation, defrosting is not performed.

Next, the fan motor abnormality detection operation and the compressor drive control operation of the cooling device thus configured will be described with reference to the flow charts shown in FIGS. 4, 5, 6 and 7.

After the power is turned on, as shown in the flow chart shown in FIG. 4 (hereinafter referred to as the first flow chart),
When the pull-down is completed (Y in judgment 30), the control device 7 first resets the abnormality check flag (hereinafter referred to as F1) (process 31), and sets the third timer TMD to 120 minutes (hereinafter referred to as F2). Is reset (process 32), and the count N of the number of abnormality detections is set to 0 (process 33).

Thereafter, it is judged whether or not there is an abnormality in the fan motor 4 (decision 34). If it is judged that the fan motor 4 has no abnormality (N in decision 34), F1 has been reset ( N in judgment 35), the flag (hereinafter referred to as F3) indicating that the fan motor 4 is stopped when the fan motor 4 is abnormal is reset (process 36).

After resetting F1, F2, and F3 in this way, temperature information is input from the temperature sensor 6 at a predetermined timing and 40 minutes is set in the first timer TMA, and the first temperature measuring unit 8 is set. The temperature of the compressor 1 is 1
When detecting that the temperature is higher than 05 ° C. (Y in determination 37), the first timer TMA starts the measurement. When the temperature of the compressor 1 is lower than 105 ° C. (N in judgment 37), the first timer TMA is reset to 40 minutes (process 38).

Until a signal indicating that 40 minutes has elapsed has been input from the first timer TMA (N in decision 39), F1 is reset in the flowchart shown in FIG. 5 (hereinafter referred to as the second flowchart). Therefore, the determination result of the determination 42 is N, and the determination result of the determination 60 is N because the F2 is reset in the flowchart shown in FIG. 6 (hereinafter referred to as the third flowchart), and the fan motor 4 is abnormal. Therefore, the determination result of the determination 70 is N.

Further, in the flow chart shown in FIG. 7 (hereinafter referred to as the fourth flow chart), since F1 is reset, the determination result of the determination 80 is N, which causes the control device 7 to display the temperature information of the F temperature sensor 6. Based on the normal compressor control.

That is, when the temperature detected by the F temperature sensor 6 is higher than the set value (Y in judgment 81), since F3 is not set (N in judgment 82), the compressor 1 and the fan are turned on. When it is turned on (processes 83 and 84) and is lower than the set value (N in judgment 81), the compressor 1 and the fan are turned off (processes 85 and 86). When the compressor 1 is turned on (Y in judgment 90), it is judged whether or not the integrated time of the compressor 1 has passed 8 hours (judgment 9).
1) If 8 hours have not elapsed (N at decision 91), the process returns to the first flowchart and the temperature of the compressor 1 is detected.

On the other hand, when 8 hours have passed, (determination 9
1), N = 0 (Y in decision 92), and F1 and F2 are in the reset state (N in decision 93, N in decision 94), the defrost heater DEF is turned on (process 10).
0). When the defrost heater DEF is turned on,
After N is set to 0 and F1 is reset (Processing 10)
1, 102), the process returns to the first flowchart and the temperature of the compressor 1 is detected.

By the way, when 40 minutes elapse while the temperature of the compressor 1 is higher than 105 ° C. (Y in judgment 39), F1 is set and the second timer TMB is set to 6
0 minute is set (process 40, 41). Here, when F1 is set, the determination result of the determination 42 of the second flowchart becomes Y, and whether the temperature rise of the compressor 1 becomes the predetermined value or more by the next 60 minutes (N of determination 43). It is determined (decision 44).

Immediately after F1 is set, the compressor 1
Does not rise (N in decision 44), so the decision result of decision 80 in the fourth flowchart is Y,
The compressor 1 remains on, but the fan motor 4 turns off (steps 87 and 88). As a result, the fan motor 4 stops immediately after F1 is set.

When the fan motor 4 is thus turned off, the temperature of the compressor 1 normally rises above a predetermined value in the second flow chart (Y in judgment 44), which causes the fan motor 4 to operate normally. It is determined that the motor is rotating and the flag (hereinafter referred to as F4) indicating that it is the first check at the time of abnormality is reset, the count N is set to 0 (processes 45 and 46), and F1 is further reset (process 55). . Here, when F1 is reset, the control operation in the state where F1 is reset as described above is repeated, and the fan motor 4 is driven according to the temperature information of the F temperature sensor 6.

By the way, the stop time of the fan motor 4 is 6
When 0 minutes has elapsed (Y in decision 43), N is 0 (N in decision 47), so 120 minutes is set in the third timer TMD and F2 is set (processes 48, 4).
9). As a result, in the third flowchart, the determination result of determination 60 is Y, and the control operation in the state where F1 is reset (N of determination 61) is repeated until 120 minutes have elapsed.

At this time, in the fourth flowchart, when the compressor 1 has been used for 8 hours (Y in judgment 91), N = 0 (Y in judgment 92), F1 is in the reset state ( (N of judgment 92), F2 is in the set state (Y of judgment 94), it is judged whether or not F4 is in the set state (judgment 95), and F4 is in the reset state until an abnormality occurs. From (N in decision 95), F4 is set (process 96).

After setting F4 in this way,
The defrost heater DEF is turned on (process 100).
As a result, when the compressor 1 has been used for 8 hours after the first abnormality is detected, defrosting can be performed. After that, N is set to 0, F1 is reset (processes 101 and 102), and then the process returns to the first flowchart and the control operation in the state where F1 is reset is repeated.

On the other hand, in the third flowchart, the third
When the set time (120 minutes) of the timer TMD elapses (Y in judgment 61), F2 is reset and the first timer TM
Set A to 40 minutes and set N to 1 (Process 6
2, 63, 64). In this case, since it is not yet determined that the fan motor 4 is abnormal (N in decision 70), the control operation in the state where F1 is reset is repeated.

By the way, since N becomes 1, the judgment result of the judgment 92 in the fourth flowchart becomes N,
As a result, F4 is reset (process 96), and even if the compressor 1 has been used for 8 hours (Y in decision 91), defrosting is not performed, and only the abnormality of the fan motor 4 is subsequently determined. .

After that, the process determination as described above is performed again, 40 minutes elapse while the temperature of the compressor 1 is higher than 105 ° C. (Y in determination 39), and the fan motor 4 is turned on. Even if the compressor 1 is stopped for 60 minutes (process 86), the temperature rise of the compressor 1 does not rise above the predetermined value (N in judgment 44), and 120 minutes later (Y in judgment 61),
N becomes 2 (process 64).

Further, after that, the temperature of the compressor 1 becomes 105.
After 40 minutes have passed while the temperature is higher than ℃ (Y in judgment 39), when the second timer TMB has elapsed 60 minutes (decision 43).
N) and N are 2, the judgment result of the judgment 47 in the second flow chart is Y, whereby N is set to 0 and the fan motor 4 is set to be abnormal and the abnormality display section 14 indicating the abnormality is displayed. The LED of is turned on (processing 50, 51, 52).

When the abnormality is detected in this way, the judgment result of the judgment 70 of the third flowchart becomes Y, and thereafter, when the temperature of the compressor 1 is higher than 120.degree. (Y of judgment 71), F3 are set (process 72), and as a result, judgment 8 is made in the fourth flowchart.
The determination result of 2 is N, and the compressor 1 is turned off (process 85).

When the temperature is lower than 80 ° C. (judgment 7)
3 N), F3 is reset (process 74), and the compressor 1 is turned on (process 83) with the judgment result of the judgment 82 in the fourth flowchart being N. When the temperature of the compressor 1 is lower than 120 ° C. (N in judgment 71) and higher than 80 ° C. (Y in judgment 73), the state of the compressor 1 according to the state of F3 up to that point is. Maintained.

When the power is turned on, the fan motor 4
If there is an abnormality (Y in judgment 34), the judgment result of judgment 70 in the third flowchart immediately becomes Y, and thereafter the compressor 1 is driven so that the temperature of the compressor 1 rises from 80 ° C to 120 ° C. Controlled. By the way, FIG. 7 is a diagram showing a state of the temperature of the compressor 1 which changes according to the control operation described so far.

As described above, when the temperature of the compressor 1 exceeds 105 ° C. for 40 minutes, the control unit 10 stops the fan motor 4 for 60 minutes, and then detects the temperature rise of the compressor 1. The detection operation is performed three times, and when the temperature rise of the compressor 1 is below a predetermined value in these detection operations, it can be determined that the fan motor 4 is abnormal. When it is determined that the fan motor 4 is abnormal as described above, the control unit 10 controls the compressor 1 so that the temperature of the compressor 1 is 80 ° C to 12 ° C.
It can be driven within the temperature range of 0 ° C.

[0046]

As described above, according to the present invention, since the pipe on the inlet side of the dissuperheater is located outside the projected portion of the blower toward the compressor, the pipe on the inlet side is The wind of the blower becomes hard to hit, and by installing a temperature sensor in this pipe, the temperature of the discharge gas refrigerant of the compressor can be accurately detected, and this detected temperature can be used as the temperature of the compressor, and , The controller determines the fan motor abnormality based on this detected temperature,
When it is determined that the fan motor is abnormal, the drive control means drives the compressor so that its temperature is within the predetermined temperature range, so that the burden on the compressor can be reduced and the cooling operation can be continued. Since the abnormal temperature rise of the compressor can be prevented and the durability can be improved, the compressor can be protected.

[Brief description of drawings]

FIG. 1 is a plan view of a machine room of a refrigerator according to an embodiment of the present invention.

FIG. 2 is a perspective view of a machine room of a refrigerator according to an embodiment of the present invention.

FIG. 3 is a block diagram of a control device of the present invention.

FIG. 4 is a part of a flowchart showing a fan motor abnormality detection operation and a compressor drive control operation of the control device.

FIG. 5 is another part of the above flowchart.

FIG. 6 is another part of the above flowchart.

FIG. 7 is the remaining part of the above flowchart.

FIG. 8 is a diagram showing how the temperature of the compressor changes.

[Explanation of symbols]

 1 Compressor A Dissuper Heater AI Piping on Inlet Side 4 Fan Motor 6 Temperature Sensor 7 Controller 10 Controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motoyuki Murasha 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A compressor having a dissuperheater,
A blower having a fan and a fan motor for cooling the compressor, and a temperature sensor for detecting the temperature of the compressor,
In a refrigerator provided with a control device for controlling the operation of the compressor based on the temperature detected by the temperature sensor, the pipe on the inlet side of the dissuperheater is located outside the projection portion of the blower toward the compressor. And the temperature sensor is attached to the pipe on the inlet side, and the control device determines an abnormality of the fan motor based on the temperature of the compressor detected by the temperature sensor. And a drive control means for driving the compressor so that its temperature is within a predetermined temperature range when the abnormality determination means determines that the fan motor is abnormal.