JPH0754227B2 - refrigerator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a cold air forced circulation type refrigerator having a freezer compartment, a refrigerating compartment, and a third compartment.

2. Description of the Related Art A conventional example will be described with reference to FIGS. FIG. 3 is a cross-sectional view of a conventional refrigerator, and FIG. 4 is a detailed sectional front view of a partition wall in the direction of arrow AA in FIG. 1 is the refrigerator body,
2 is a freezing room, 3 is a refrigerating room, 4 is a third room, 5 is a cooler, 6 is a blower for forcedly circulating the cool air of the cooler to each room,
Reference numeral 7 is a duct cover connected to a freezing compartment 2 and a duct 8 for dividing the cold air into the refrigerating compartment 3 and the third compartment 4, and the duct 8 is connected to a temperature control device 9 of the refrigerating compartment 3 and the third compartment 4. Therefore, the temperature control device 9 has a damper opening / closing device 10 for adjusting the amount of cold air discharged to the refrigerating chamber 3 and a cool air discharge passage (not shown above) to the refrigerating chamber 3, and also has a third chamber. 4 has a damper opening / closing device 10 for adjusting the amount of cold air discharged to the chamber 4, a temperature sensing unit 11 and a cold air discharge passage 12 to the third chamber.
A refrigerating room cold air return passage 16 composed of an upper heat insulating member 14 and a lower heat insulating member 15 is formed inside 13, and the partition wall 13 and the lower heat insulating member 15 form a third chamber of the temperature control device 9. A third chamber cold air return passage connected to the cold air discharge passage 12 to the third chamber 4 and penetrating the partition wall 13 and the lower heat insulating member 15 and connected to the refrigerating chamber cold air return passage 16. 18 and are arranged.

With such a configuration, the air cooled by the cooler 5 is forcedly circulated in the freezer compartment 2 by the blower 6 via the duct cover 7, and reaches the temperature adjusting device 9 via the duct 8 to be refrigerated respectively. Room damper opening / closing device (not shown) and third
The amount of cold air is controlled to an appropriate amount by the chamber damper opening / closing device 10 and is returned to the cooler 5 through the respective cold air discharge passages 12 and 17 and the refrigerating room cold air return passage 16 and thereafter the same operation is performed. Then, cooling is performed. Here, the temperature of the third chamber 4 is lower than the refrigerating temperature (3 to 5 ° C) and higher than the freezing chamber temperature, chilled (about 0 ° C), ice temperature (about -1 ° C), partial freezing (about-). (3 ° C), etc., and provided as a room at a temperature suitable for the preservation of fresh foods. Therefore, in general, the temperature distribution in the front of the third chamber 4, which has a large heat absorption load due to its structure, tends to have a high temperature distribution, and the cool air discharge passage 17 to the third chamber 17
Is dealing with it by arranging its outlet near the front of the third chamber.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a configuration, the temperature of the third chamber 4 is set to the third wall arranged in the partition wall 13 that constitutes the ceiling wall thereof.
The cold air passing through the cold air introducing passage 17 to the chamber of
In particular, the inner part is cooled, and the partition wall 13 itself serves as a cooler plate in addition to the cooling by the discharge cold air. The inner part of the wall 13 is cooled further, the temperature unevenness in the third chamber 4 becomes large, and when a load with a large amount of water is stored in the third chamber 4, the partition wall 13 is frosted, etc. have. In order to solve such a problem, when a heater is provided between the lower heat insulating members 15 on the back surface of the partition wall 13,
The amount of heat is transmitted through the heat conduction of 13 to the third inside the cold air introduction passage 17.
However, there is a drawback in that the discharge of cold air into the chamber 4 causes the heater to have an unnecessarily large capacity, resulting in an increase in power consumption.

Means for Solving the Problems In order to solve the above problems, the present invention provides a cold air introduction passage in the partition wall to the third chamber between the upper heat insulating member and the lower heat insulating member in the partition wall. is there.

Effect The present invention has the above-described configuration, and even if cold air circulates in the cold air introduction passage to the third chamber, the cold air introduction passage is configured by the heat insulating member, and thus the partition wall forming the ceiling of the third chamber The cold air is discharged from the front of the inside of the third chamber without directly cooling.

EXAMPLES Examples of the present invention will be described below with reference to FIGS. The same components as those of the related art are designated by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described.

FIG. 1 is a sectional view of the refrigerator of the present invention, and FIG.
FIG. 3 is a detailed front cross-sectional view of the partition wall 13 in the direction of arrow A-A in FIG. Reference numeral 13 is a partition wall that constitutes the ceiling surface of the third room, and the cool air to the third room 4 of the temperature control device 9 configured by the upper heat insulating member 19 and the lower heat insulating member 20 in the partition wall 13. A cold air introduction passage 21 to the third chamber 4, which is continuous with the discharge passage 12, is provided.

With this configuration, the cool air that has exited the temperature control device 10 of the third chamber 4 is discharged into the third chamber 4 through the third chamber cool air introduction passage 21 through the lower heat insulating member 20 in the partition wall 13. And temperature sensitive part
At 11, the desired temperature is detected and the damper opening of the damper opening / closing device 10 is adjusted to control the inside of the third chamber 4 to the desired temperature.

As described above, according to this embodiment, the third wall arranged in the partition wall 13
Since the cold air introduction passage 21 into the chamber 4 of the third chamber 4 is arranged through the lower heat insulating member 20 with respect to the partition wall 13 constituting the ceiling surface of the third chamber 4, the ceiling of the third chamber 4 is This solves the problems that the partition wall 13 forming the surface is used as a cooling plate to cause temperature unevenness in the third chamber 4 and to cause frost formation when storing a humid load.

As described above, according to the present invention, the cool air discharge passage to the third chamber is provided in the partition wall between the upper heat insulating member and the lower heat insulating member that form the cold air return passage of the refrigerating chamber. The effect of is obtained. That is, temperature unevenness in the third room can be reduced, and frost does not form on the ceiling surface of the third room.
Further, in contrast to the conventional example, the structure of the cold air introduction passage to the third chamber was constituted by the partition wall and the lower heat insulating member of the two heat insulating members constituting the refrigerating chamber return passage. As in the case of the air passage, since it is composed only of the upper heat insulating member and the lower heat insulating member in the partition wall, there is no need to increase costs.

Further, when a temperature compensating heater is required between the low outside air temperature partition wall and the lower heat insulating member, the partition wall is not cooled by the circulation of cold air to the introduction passage into the third room, so the heater capacity should be set to a small value. Can be done.

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator showing an embodiment of the present invention, and FIG.
FIG. 1 is a detailed front sectional view of a partition wall in the direction of arrow AA in FIG. 1, FIG. 3 is a sectional view of a refrigerator showing a conventional example, and FIG. 4 is a direction of arrow AA in FIG. It is a front sectional detailed view of the partition wall. 2 ... Freezer room, 3 ... Refrigerator room, 4 ... Third room, 9 ...
Temperature control device, 10 ... Damper opening / closing device, 12 ... Cold air discharge passage, 13 ... Partition wall, 16 ... Cold room cold air return passage, 19 ...
… Upper heat insulating member, 20 …… Lower heat insulating member, 21 …… Third chamber cold air introduction passage.

Claims (1)

[Claims] 1. A freezing chamber partitioned by a partition wall, a refrigerating chamber, a third chamber constituting a ceiling surface at least by the partition wall, and a cold air discharge amount to the third chamber is adjusted. A damper opening / closing device and a temperature adjusting device accommodating the damper opening / closing device to form a cool air discharge passage to the third chamber are provided in the inner part of the partition wall, and the inner surface of the third chamber is the temperature adjusting device. The upper air insulation member and the lower heat insulation member, which are constituted by a device and constitute a refrigerating room cold air return passage arranged in the partition wall, and also cold air discharge to the third chamber of the temperature control device by the both heat insulating materials. A refrigerator having a third chamber cool air introduction passage connected to the passage.