JPH07305950A - Refrigerator - Google Patents

Abstract

PURPOSE:To display an alarm when a set temperature is continued for a set time or more by mounting a sensor for sensing a temperature at a cooling fan mounting member and to forcibly stop a compressor when a set temperature higher than the previous set temperature is continued for another set time or more. CONSTITUTION:The refrigerator comprises a compressor 3 in a machine room 2, a cooling fan 6, a cooling fan mounting member 7, a sensor mounting member, a sensor holder 8, a temperature sensor 9 mounted by the sensor 8, and a display LED of the front surface of a refrigerator body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor protection device provided in a refrigerator.

[0002]

2. Description of the Related Art Conventional refrigerators use mechanical parts for protecting a compressor, which have a function of stopping when both current and temperature become excessive.

An example thereof will be described with reference to FIGS. 5 and 6. 1 is a refrigerator main body, 2 is a machine room under the refrigerator main body 1, 3 is a compressor provided in the machine room 2, 4
Is an overload protection device for protecting the compressor 3. This overload protection device 4 is equipped with an electrode part 5 of the compressor.
It is attached to.

The overload protection device 4 stops the compressor when the temperature and the current value of the compressor 3 become abnormally high.

[0005]

However, with such a protection method, when the current value applied to the compressor is small and only the temperature is high, the compressor continues operating without stopping. When the compressor is operated at a high temperature in this way, internal parts of the compressor, for example, wear of the piston due to a decrease in viscosity of refrigerating machine oil, insulation failure of the motor winding, and the like, cause the compressor to malfunction and prevent the refrigerator from cooling.

The present invention eliminates the deterioration of cooling performance due to the ambient temperature of the compressor described above.

[0007]

In order to solve the above-mentioned problems, the refrigerator of the present invention has a sensor for detecting the temperature of a compressor mounted on a mounting member of a fan for cooling a machine room, and displays a warning according to the temperature or duration. Control to do.

[0008]

Since the sensor detects the temperature around the blower mounting member, it can indirectly detect the temperature around the compressor.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 1, a machine room 2 is formed at the bottom of a refrigerator body 1. The left and right sides of the machine room 2 are closed by the sides of the refrigerator body 1.

The machine room 2 is arranged with a compressor 3 and a cooling fan 6 beside it. And the cooling fan 6
The temperature sensor 9 is attached to the claw portion 8 formed on the attachment member 7 of FIG. Display LED 10 on the front of the refrigerator body 1
To place.

Next, the operation patterns will be described. In the first stage, the temperature of the cooling fan mounting member 7 rises as the compressor operates and the temperature sensor 9
When the temperature reaches the control temperature T1 and the control time H1 is continued, the LED 10 for alarm display blinks. In this case, control temperature T1
Even if it becomes the following, the blinking of the display LED cannot be turned off unless the main power is turned off.

Further, in the second stage, the temperature becomes higher than that in the first stage and the temperature sensor 9 reaches the control temperature T2, and the control time H2 is reached.
When it exceeds, the operation of the compressor 3 is stopped. In this case, when the temperature becomes equal to or lower than the control temperature T2, the operation is restored.

[0014]

As is apparent from the above-described embodiment, the present invention can inform the user of an abnormality, so that it is possible to maintain a normal cooling operation with simple repairs and only with minor repairs.

[Brief description of drawings]

FIG. 1 is a rear view of a refrigerator showing an embodiment of the present invention.

[Fig. 2] Front view of the refrigerator

FIG. 3 is a diagram showing a control device in the embodiment of the refrigerator.

FIG. 4 is a time chart of the control device in the embodiment of the refrigerator.

FIG. 5 is a rear view of a refrigerator showing a conventional example.

FIG. 6 is a characteristic diagram of current value and temperature of a conventional overload protection device.

[Explanation of symbols]

 1 Refrigerator body 2 Machine room 3 Compressor 4 Overload protection device 5 Compressor electrode part 6 Cooling fan 7 Cooling fan mounting member 8 Holder sensor 9 Temperature sensor 10 LED for alarm display

Claims (2)

[Claims] 1. A cooling fan in which a machine room is formed in a lower inner part of a refrigerator main body, a compressor and a cooling fan are provided in the machine room, and the compressor is cooled by the cooling fan. Refrigerator with a temperature sensor attached to the mounting member. 2. The refrigerator according to claim 1, further comprising a display lamp for displaying a warning when the temperature of the compressor is equal to or higher than a preset temperature by the temperature detection sensor and continues for a preset time or longer.