JPH02233965A - Freezer refrigerator - Google Patents

Abstract

PURPOSE:To increase the cooling capacity by a simple constitution by a method wherein a damper thermostat is mounted in a duct, and connected to teh suction side of the fan through duct for agitating the interior of a chamber of a refrigerating chamber. CONSTITUTION:Air cooled by a cooling fan 15 and a vaporizer 14 cools a freezing chamber 10. In this case, the temperature of the freezing chamber 10 is reduced approximately to -20 deg.C. A part of so cooled air is guided to a duct 28 and an opening part 29 according to the temperature of a refrigerating chamber 11 by means of a damper thermostat 17. In this case, a pressure in a fan cover 26 is brought into a negative pressure since a fan 21 for agitating the interior of a chamber is run, cold air in the freezing chamber 10 is forcibly sucked, and quantities of cold air is fed to the refrigerating chamber 11. Meanwhile, cold air in the refrigerating chamber 11 is also sucked through an air introduction inlet 27 for circulation to produce mixed cold air, and the cold air is circulated within the refrigerating chamber 11. Air introduced from the freezing chamber 10 is returned in the in-chamber temperature state of the freezing chamber 11 thorough a cold air return air duct 13 to the freezing chamber 10 and is cooled.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a two-temperature type refrigerator-freezer that controls the temperature of two compartments in a single cooling cycle.

BACKGROUND OF THE INVENTION In recent years, as a structure for cooling the freezer compartment and refrigerator compartment of a refrigerator-freezer, a cooling system is often implemented in which heat is distributed from the cold air from the freezer compartment to the refrigerator compartment using a damper.

Hereinafter, an example of a conventional cooling/air passage configuration will be described with reference to the drawings, using FIGS. 3, 4, and 6.

Reference numeral 1 denotes a main body of a refrigerator-freezer, and the main body is constituted by an insulating box 3 having a plurality of freezer compartment doors 2a and refrigerator compartment doors 2b each made of a heat insulating material at a front opening. A machine room 7 in which the compressor 4, condenser fan 6, and condenser 6 are housed is formed on the upper side of the main body.

Reference numeral 8 indicates an outer box 8a, an inner box 8b made of synthetic resin or metal, and a foamed heat insulating material 8 filled between both boxes 8a and Bb.
This is an insulating wall made of C.

9 is an insulating wall that divides the freezer compartment 10 for freezing food and the refrigerator compartment 11 for refrigerating food;
It has a through hole for a cold air inlet 12 and a cold air return air passage 13.

The upper part of the freezing compartment 10 is equipped with an evaporator 14 and a cooling fan 15 for blowing cold air cooled by the evaporator 14. After melting the moisture that has formed on the evaporator 14, it is sent to the freezing compartment 1o. A drain 16 is provided for discharging the water to the outside. The freezer compartment 10 is equipped with a damper thermostat 1, which opens and closes at the temperature of the refrigerator compartment 11 to send cold air to the refrigerator compartment 11 and to control the temperature, in order to achieve a two-temperature storage in one freezing cycle. It is fixed so that the cold air suction side and the cold air discharge side are divided by the partition wall 18 and the cover 19. Further, the cover 19 is integrated with a duct 2o which is sealed up to the cold air inlet 12 of the heat insulating wall 9.

The refrigerator compartment 11 is provided with an internal stirring fan 21 for uniformizing the temperature distribution inside the refrigerator, and has an opening 22 at the top for introducing air. fully covered.

24. 25 is a shelf on which food is placed.

Problems to be Solved by the Invention However, with the above configuration, when the cooling load of the refrigerator compartment 11 is large, for example, when the outside temperature is high at 36° C. or higher, and the amount of food increases. Even if 17 is fully opened, it cannot keep up with the cooling load, resulting in poor cooling, or
In order to increase the cooling capacity, the opening of the damper 17 has often been enlarged, but this has resulted in problems such as a large increase in cost due to the increase in the size of the damper 17.

In view of the above problems, the present invention is capable of increasing cooling capacity with a simple configuration.

Means for Solving the Problems In order to solve the above problems, the technical means of the present invention is to provide a duct from the freezer compartment to the refrigerator compartment, communicate this duct with an internal stirring fan of the refrigerator compartment, and A damper thermostat that opens and closes at the temperature of the refrigerator compartment is installed on the upwind side of the internal stirring fan.

Effects According to the present invention, with the above-described configuration, the cold air in the freezer compartment can be forcibly sucked in by the internal stirring fan, and the cold air in the freezer compartment can be sent to the refrigerator compartment.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. Components that are the same as those in the conventional example are designated by the same numbers and the description thereof will be omitted.

In the figure, reference numeral 26 denotes a fan power bar that covers the internal stirring fan 21. At the top, there is a circulating air inlet 27 for sucking air from the refrigerator compartment 11, and an air inlet for leading out from the freezer compartment 1o. It has an opening 29 for coupling with a duct 28 connected via 12.

The duct 28 is then connected to the opening 29 of the fan power bar 26.
And the seal is firmly fixed.

Next, the operation of the above configuration will be explained.

First, cooling fan 15. The air cooled by the evaporator 14 cools the freezer compartment 1o. At this time, the temperature of the freezer compartment 10 is -
It is cooled to about 20°C.

Then, a part of the cooled air is transferred to the damper thermostat 17 according to the temperature of the refrigerator compartment 11 (temperature control range is -6°C to +10°C) through the cooling cover 17 and the duct 28. Opening 2
Leads to 9.

At this time, the pressure inside the fan power bar 26 is negative because the internal stirring fan 21 is rotating, and the cold air in the freezer compartment 10 is forcibly sucked in, and a large amount of cold air is kept in the refrigerator. Send him to room 11.

On the other hand, the cold air in the refrigerator compartment 11 is also sucked through the circulating air inlet 27, becomes mixed cold air, and circulates inside the refrigerator compartment 11.

Then, the air introduced from the freezer compartment 1o passes through the cold air return air path 13, returns to the freezer compartment 1Q at the internal temperature of the refrigerator compartment 11, and forms a cycle where it is cooled again.

As described above, according to this embodiment, the cold air in the freezer compartment 10 is transferred to the damper thermostat 17. Since the configuration is such that the air is directly led out to the suction side of the internal stirring fan 21 of the refrigerator compartment 11 through the duct 28, the cold air of the freezing compartment 10 is forcibly drawn out by the negative pressure of the internal stirring fan 21. , Don't flush it to the refrigerator compartment 11.
Even if the damper thermostat 17 has a small opening area, it can send a large amount of cold air.

Effects of the Invention As described above, the present invention has a structure in which a damper thermostat is provided in a duct and connected to the suction side of an internal stirring fan of a refrigerator compartment through a duct, so that a small damper thermostat with a small opening area can be achieved. However, since a large amount of cold air can be sent into the freezer compartment, not only can an inexpensive small damper be used, but the space on the freezer compartment side will not be narrowed down by a large damper. This makes it possible to reduce the amount of space required and make effective use of space.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a refrigerator-freezer main body according to an embodiment of the present invention.
Figure 2 is a cross-sectional view taken along line A-A' in Figure 1, Figure 3 is a front view of the refrigerator body, Figure 4 is a cross-sectional view of the body of a conventional refrigerator-freezer, and Figure 6 is a cross-sectional view taken along line A-A' in Figure 4. - It is a sectional view taken along the line B'. 8a... Outer box, 8b... Inner box, 8C.
...Foam insulation material, 8.9 ...Insulation wall, 1
0... Freezer room, 11... Refrigerator room, 17
・・・・・・Damba thermostat, 28・・・・・・
Duct, 26...Fan power bar 2 9 -.
...Opening, 21...Fan for stirring inside the refrigerator. Name of agent: Patent attorney Shigetaka Awano and 1 other person10
-11 2F -Ichida--- 冫1〕・冫＊X Dirty 1&! Fan fan for inside the refrigerator "JTJ bar small figure &-- a-・One button 18.9-- 10-・+1-1117--・2l-- a---Outside ■ Yen rare issue 2-11 Cold J Ka Kurahada Figure Figure

Claims (1)

[Claims] A freezer compartment equipped with an evaporator and a cooling fan for forced ventilation, a refrigerator compartment equipped with an internal agitation fan for forced ventilation, and a freezer compartment that connects the freezer compartment and the refrigerator compartment to the internal agitation fan. a duct for sucking air; a damper thermostat installed in the duct to open and close at the temperature of the refrigerator compartment; and a damper thermostat installed on the windward side of the internal stirring fan; and a return air path for returning cold air from the refrigerator compartment to the freezer compartment. Freezer/refrigerator.