JPS5916768Y2 - Freezer refrigerator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a refrigerator-freezer with reduced power consumption.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

The figure is a side sectional view of a refrigerator-freezer equipped with a cold air circuit, showing an embodiment of the present invention.

In the figure, reference numeral 1 denotes a refrigerator-freezer in which a freezer compartment 3 is disposed above a refrigerator compartment 2, and a cooler 5 and a fan 6 are installed in a rear surface 4 of the freezer compartment 3.

7 is a partition wall that partitions the freezer compartment 3 and the refrigerator compartment 2;
A first duct 8 for exclusively circulating cold air into the freezer compartment 3 is disposed above the partition wall 7.

A second duct 9 is disposed in contact with the lower part of the partition wall 7 and is gradually inclined downward as it approaches the back surface 10 of the refrigerator 2, and is a cooling plate attached to the ceiling wall 12 of the refrigerator compartment 2. 11 to cool the inside of the refrigerator compartment 2.

A communication duct 13 is disposed on the back surface 14 of the partition wall 7 and communicates the first duct 8 and the second duct 9.

15 is arranged in front of the partition wall 7, and the second
This is a cold air inflow control member consisting of a cold air damper thermometer or the like installed near the cold air inlet 16 of the duct 9.

The cold air damper thermometer 15 senses the temperature of the cooling plate 11 and compares it with a preset internal temperature of the refrigerator compartment 2 to control the amount of cold air flowing in and keep the temperature inside the refrigerator constant. 'It is adjusted accordingly.

Next, the operation of the refrigerator-freezer according to the embodiment of the present invention will be explained.

First, when the refrigerator-freezer starts operating, the cooler 5 and fan 6 operate, and the flow of cold air generated in the freezer compartment 3 is moved by the fan 6 to the front of the freezer compartment as shown by the arrow 17, and some forms a cold air circuit of the freezer compartment 3 that flows into the first duct 8 and returns to the cooler 5 as shown by the arrow 18;
The remaining cold air flows into the second duct 9 through the cold air inlet 16 of the second duct 9 as shown by the arrow 19;
A cold air circuit of the refrigerator compartment 2 returning to the cooler 5 via the communication duct 13 is formed.

The flow of cold air inside the refrigerator compartment 2 exchanges heat with the cooling plate 11 as shown by arrow 20, and the inside of the refrigerator compartment 2 is cooled by direct cooling.

The amount of cool air flowing into the second duct 9 can be sucked in or stopped by opening and closing the damper thermostat 15, etc.

The frost in the refrigerator compartment 2 adheres to the cooling plate 11, but when the cold air damper thermometer 15, etc. described in Section 2 is closed, the air in the refrigerator compartment 2 naturally circulates and gives heat of fusion to the frost. As the temperature inside the refrigerator compartment 2 decreases, the frost melts and is discharged outside the refrigerator.

If the cold air damper thermostat etc. 15 is set so as not to open until the frost adhering to the cooling plate 11 is completely melted, the heat of melting the frost can be effectively used to cool the inside of the refrigerator. can do.

Furthermore, if the cold air damper thermometer 15 is closed, the cold air generated from the cooler 5 is circulated only to cool the inside of the freezer compartment 3, which has the advantage of shortening the operating time. be.

As explained above, according to the present invention, in a refrigerator-freezer in which a freezer compartment is arranged above a refrigerator compartment, a cooler and a fan are installed in the back of the freezer compartment, and a partition wall partitions the freezer compartment and the refrigerator compartment. The first section dedicated to the circulation of cold air in the freezer compartment is located at the top of the
duct, and a second duct located at the bottom of this partition wall and arranged to exchange heat with a cooling plate attached to the ceiling wall of the refrigerator compartment, and sensing the temperature of the cooling plate. The cold air inflow amount control member controls the amount of cold air flowing into the second duct by fully opening or closing the cooling plate, and thereby defrosts the frost attached to the cooling plate.
Since cold air is circulated only in the freezer compartment, the capacity of the cooler and fan motor may be small, and since this cold air circuit only collects frost from the air in the freezer compartment, forced defrosting with a heater, etc. is not necessary. It is possible to provide a refrigerator-freezer with high practical value that can extend the cycle several times and significantly reduce power consumption.

[Brief explanation of the drawing]

The figure is a side sectional view of a refrigerator-freezer equipped with a cold air circuit showing an embodiment of the present invention, in which 1 is a refrigerator-freezer, 2 is a refrigerator compartment,
3 is a freezer compartment, 4 is a rear surface, 5 is a cooler, 6 is a fan, 7 is a partition wall, 8 is a first duct, 9 is a second duct, 11 is a cooling plate, 15 is a cold air damper thermo, 16 is a This is a cold air inlet.

Claims (1)

[Scope of utility model registration request] In a refrigerator-freezer that has a freezer compartment above the refrigerator compartment,
A cooler and a fan are installed in the back of the freezer compartment, and a first duct dedicated to circulating cold air in the freezer compartment is installed at the top of the partition wall that separates the freezer compartment and the refrigerator compartment, and a first duct is installed at the bottom of this partition wall. and a second duct disposed to exchange heat with a cooling plate attached to the ceiling wall of the refrigerator compartment, and fully open or close the cooling plate by sensing the temperature of the cooling plate. Second
A refrigerator-freezer characterized by comprising a cold air inflow amount control member that controls the amount of cold air flowing into the duct and thereby defrosts frost adhering to the cooling plate.