JPH0571846A - Freezing refrigerator - Google Patents

Abstract

PURPOSE:To obtain a freezing refrigerator in which the rise of a freezing chamber temperature is prevented without using a temperature compensating heater having a fear of impairing food and a danger of deterioration of an insulator. CONSTITUTION:Means for preventing the rise of a freezing chamber temperature when the atmospheric temperature is low in a freezing refrigerator in which a temperature of a cold storage chamber is sensed to control the operation of a compressor comprises an independent freezing chamber 1, a cold storage chamber 2, a cold storage chamber temperature detector 5a and an atmospheric temperature sensor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator / freezer for general household use.

[0002]

2. Description of the Related Art Conventionally, such a technique has been disclosed in Japanese Utility Model Publication No. 63-209.
As disclosed in Japanese Patent Publication No. 35-35, in a refrigerating refrigerator that detects the temperature in the refrigerating chamber and controls the operation of the compressor,
It is important to have a technique for preventing the temperature rise in the freezing compartment due to the reduction of the operating rate of the compressor at low outside temperature. Less than,
The refrigerator-freezer as described above will be described with reference to the drawings.

FIG. 3 is a sectional view of a conventional refrigerator-freezer, and FIG.
Is a circuit diagram of a conventional example. 1 is a freezing room, 2 is a refrigerating room, 3
Is a freezer evaporator, 4 is a cold room evaporator, 5 is a cold room temperature detecting device, 6 is a temperature compensating heater, 7 is a compressor, and 8 is an inner box made of resin molding.

The operation will be described below with reference to FIGS. As shown in FIGS. 3 and 4, the temperature control in the refrigerator is performed by controlling the motor that drives the compressor 7 by the operation of the contacts of the refrigerator temperature detecting device 5 provided in the refrigerator 2.

Further, when the outside air temperature is lowered to near the set temperature of the refrigerating compartment 2, the operation rate of the compressor 7 is lowered and the refrigerating compartment 2 is prevented from increasing in temperature. A temperature compensating heater 6 is arranged on the rear surface of the inside of the refrigerator to increase the rate of temperature increase in the refrigerating chamber when the compressor 7 is stopped, and thereby increase the operation rate of the compressor 7.

[0006]

However, in the above structure, when the food comes in contact with the rear surface of the refrigerating chamber in which the temperature compensating heater is arranged, not only the freshness of the food is impaired, but also the resin molding is used. There is a problem in that insulation of the temperature compensating heater deteriorates due to water absorption of the inner box.

The present invention has been made in view of the above problems. The temperature compensating heater which impairs the freshness of food and causes insulation deterioration is eliminated, and the temperature inside the freezer compartment rises at low outside air temperature. A freezer-refrigerator provided with a means for preventing the above.

[0008]

In order to solve the above problems, the present invention comprises a temperature detecting device for a refrigerating compartment and a temperature compensating means for a freezing compartment at low outside air temperature.

Further, an outside air temperature sensor is provided for compensating the temperature of the freezing room when the outside air temperature is low, and the temperature control width of the temperature detecting device in the refrigerating room is changed when the outside air temperature is low.

[0010]

According to the present invention, with the above-described structure, the temperature of the freezer is prevented from rising by shortening the down time of the compressor at a low outside temperature and increasing the operating rate of the compressor without using the temperature compensating heater. To do.

[0011]

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

Reference numeral 1 is a freezer compartment, 2 is a refrigerator compartment, 3 is a refrigerator evaporator, 4 is a refrigerator evaporator, 7 is a compressor, and 8 is an inner box made of resin molding. Since the above has the same configuration as the conventional example, the same numbers are assigned and detailed description thereof is omitted.

Reference numeral 5a is a temperature detecting device, 9 is an outside air temperature sensor, and the output of the comparator 11 to which this outside air temperature sensor is input is, for example, 'H' when the outside air temperature is 5 ° C. and'L 'at 7 ° C. It is assumed that it is set to switch to.

Reference numeral 10 denotes a refrigerating compartment temperature sensor, and a comparator 12a having the refrigerating compartment temperature sensor as an input is set so that the refrigerating compartment temperature becomes "H" at 0 ° C and "L" at 5 ° C. Similarly, it is assumed that the comparator 12b is set to “H” at 0 ° C. and “L” at 5 ° C.

At the time of high outside temperature, the output of the comparator 11 is "L", and at this time, the control unit 13 causes the comparator 1 to output.
The output of 2a is selected, and the compressor 7 performs the intermittent operation via the relay 14 in the range of the refrigerating room temperature of 0 ° C to 5 ° C.

When the outside air temperature drops below 5 ° C., the output of the comparator 11 becomes'H '. At this time, the output of the comparator 12b is selected by the control unit 13 and the temperature of the refrigerating room is changed. In the range of 0 ° C to 2 ° C, the compressor 7 performs intermittent operation.

As in the above embodiment, by reducing the control width of the refrigerating compartment temperature at a low outside temperature, the stop time of the compressor 7 is shortened, the operating rate of the compressor 7 is increased, and the freezer compartment 1 is cooled. To prevent the temperature from rising.

[0018]

As described above, according to the present invention, with the above-described structure, the refrigerator-freezer which increases the operation rate of the compressor and prevents the rise of the freezing room temperature without using the temperature compensating heater at low outside air temperature. Is provided.

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator-freezer according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a temperature detection device according to an embodiment of the present invention.

FIG. 3 is a sectional view of a conventional refrigerator-freezer.

FIG. 4 is a circuit diagram of a conventional refrigerator-freezer.

[Explanation of symbols]

 1 Freezer 2 Refrigerator 5a Refrigerator temperature detector 9 Outside air temperature sensor

Claims (2)

[Claims] 1. An independent freezing compartment, a refrigerating compartment, a temperature detecting device for detecting the temperature of the refrigerating compartment and controlling the operation of the compressor, and a temperature compensating means for the freezing compartment at low ambient temperature. Freezer refrigerator. 2. An outside air temperature sensor is provided for compensating the temperature of the freezer compartment when the outside air temperature is low, and the temperature control width of the temperature detecting device of the refrigerating compartment according to claim 1 is changed when the outside air temperature is low. The refrigerator / freezer according to claim 1.