JPH0754228B2 - 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.

Conventional Technology A conventional example will be described with reference to FIG. 1 is the refrigerator body, 2
Is a freezing room, 3 is a refrigerating room, and 4 is a third room. A cooler 5 is installed on the back surface of the freezer compartment 2 and is provided with a blower 6 for forcibly circulating the cool air through the freezer compartment 2, the refrigerator compartment 3 and the third compartment 4. 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. is doing. The temperature control device 9 has a damper opening / closing device for adjusting the discharge amount of cold air to the refrigerating chamber 3 and a cool air discharge passage (not shown) of the refrigerating chamber 3, and controls the discharge amount of cool air to the third chamber 4. It has a damper opening / closing device 10 to be adjusted, a temperature sensing part 11 of the damper opening / closing device 10, and a dial 12 for adjusting the opening of the damper opening / closing device 10 to change the set temperature of the third chamber. Further, a cool air discharge passage to the third chamber 4 provided in the temperature control device 9
13 is connected to a third chamber cool air discharge passage 15 provided in the partition wall 14. On the other hand, the partition wall 14 is provided with a cool air return passage 16 to the refrigerating chamber 3 and a cool air return passage 17 of the third chamber 4 connected to the return passage 16. In the third chamber 4, the ceiling surface is the partition wall 14, the back surface is the wall surface of the temperature control device 9, and the door 18 is provided.
And the bottom surface is substantially sealed with the second partition wall 19. In this structure, the air cooled by the cooler 5 is blown by the blower 6
In addition to flowing into the freezer compartment 2 through the outlet 7'of the duct cover 7 for forced circulation, it reaches the temperature adjusting device 9 through the duct 8 and reaches the refrigerating compartment damper opening / closing device (not shown) and the first. The amount of cold air is controlled to an appropriate amount by the chamber damper opening / closing device 10 of No. 3 and the discharge passage,
After being returned to the cooler 5 through the return passage, the same operation is continued thereafter to perform cooling. Here, the temperature of the third chamber 4 is lower than the refrigerating chamber temperature (3 to 5 ° C) and higher than the freezing chamber temperature, chilled (about 0 ° C), water temperature (about -1 ° C), partial freezing (about-). The temperature can be controlled and switched to a temperature suitable for fresh preservation of each food such as 3 ° C). Therefore, in general, the temperature distribution in the front of the third chamber 4 where the heat absorption load is large due to its structure tends to be high, and the outlet of the cool air discharge passage to the third chamber 4 is arranged near the front of the third chamber. Are being dealt with.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a configuration, in order to switch the set temperature of the third chamber 4, it is necessary to operate the dial 12 of the temperature adjusting device 9 arranged in the lower part of the compartment, and the refrigerating process is performed. When a large amount of food is stored in the chamber 3, the operation is difficult and the adjustment position is at the back, which makes it difficult to perform accurate adjustment. In order to solve the problem, in order to operate the dial 12 of the damper opening / closing device 10 of the third chamber in the front of the refrigerator, the structure becomes complicated and the cost becomes high, and a conversion mechanism for operating the dial 12 is installed. This is usually necessary, and in this case, there is a drawback that the adjustment accuracy due to these mechanical tolerances decreases.

In view of the above problems, the present invention provides the temperature control mechanism for the third chamber at a position in front of the third chamber that is easy to see and adjust, and abolishes the opening characteristic switching mechanism of the damper opening / closing device for the third chamber. The cost reduction is provided by.

Means for Solving the Problems In order to solve the above problems, the present invention does not adjust the set temperature of the third chamber by adjusting the characteristics of the damper opening / closing device for the third chamber. A bypass passage, which is connected to the return passage of the third chamber without being discharged to the third chamber, is arranged near the outlet of the discharge passage to open / close the outlet of the third chamber cool air discharge passage and at the same time open / close the bypass passage. The shutter is arranged.

Operation According to the present invention, when the shutter is actuated in the direction to decrease the discharge opening of the third chamber, the bypass passage connected to the return passage at the same time has an increased opening amount, and the third chamber 4 has
As a result, the amount of cold air discharged into the chamber decreases and the set temperature is adjusted to a higher value.

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

Reference numeral 20 is a return passage of the third chamber 4, 21 is a bypass passage between the discharge passage 15 to the third chamber 4 and the return passage 20, and 22 is communication with a discharge port 15 'of the third chamber discharge passage. It is a shutter having a projecting piece 24 that opens and closes the opening 23 and the bypass passage 21, is attached to the partition wall 14, and is arranged so that its operation can be performed on the front surface of the door 18.

With such a configuration, FIG. 2 shows a state in which the set temperature of the third chamber is set to the lowest temperature. That is, the third chamber discharge port 15 ′ and the opening portion 23 of the shutter 22 are fully opened facing each other, the shutter projection piece 24 substantially closes the bypass passage 21, and the discharge cold air controlled by the damper opening / closing device 10 is completely closed. Chamber 3
After being discharged inside, it returns to the return passage 20 and returns to the cooler 5.

Further, FIG. 3 shows a state in which the set temperature of the third chamber is adjusted to a high value. That is, the third chamber discharge port 15 'and the opening 23 of the shutter 22 are displaced from each other, and the actual opening area of the third chamber discharge port 15' is reduced and narrowed.
The shutter projection 24 that closed the opening of the bypass passage 21 is controlled by the damper opening / closing device 10, and the cool air sent through the discharge passage 15 is directly introduced into the return passage 21 through the bypass passage 21. The amount of cold air discharged to the third chamber 4 is reduced, and the amount of cold air discharged to the third chamber 4 can be greatly reduced according to the movement amount of the shutter 22 as shown in FIG. Is.

As described above, according to the present embodiment, the setting temperature of the third chamber 4 can be easily switched only by operating the shutter arranged on the partition wall 14 in front of the door 18 of the third chamber. It is a thing.

As described above, according to the present invention, the shutter for opening and closing the third chamber cool air discharge passage outlet, the bypass passage provided between the third chamber cool air discharge passage and the third chamber cool air return passage is provided. The following effects can be obtained.

(1) Since the set temperature of the third chamber can be easily switched in front of the door of the third chamber, there is no need to set the food in the refrigerator to the setting display which is hard to see in the interior unlike the conventional case.

(2) Since the characteristic of the damper opening / closing device in the third chamber itself is not adjusted to change the set temperature, this damper opening / closing device does not require an extra characteristic switching mechanism, and thus the damper opening / closing device of low cost can be provided. Hiring is possible.

(3) When the set temperature of the third chamber is increased, the temperature of the temperature sensing part of the damper opening / closing device is also increased, and the opening of the damper opening / closing device is increased to the contrary, and the air volume to the discharge passage is increased. In addition to restricting the cold air discharge port to the third chamber by restricting it, the return passage is opened and bypassed, so that the discharge cold air amount adjustment width, that is, the third chamber set temperature switching width can be made large.

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator showing an embodiment of the present invention, and FIG.
FIG. 3 and FIG. 3 are sectional detailed views of a partition wall in the direction of the arrow in FIG. 1 and FIG. 4 is a sectional view of a refrigerator showing a conventional example. 2 ... Freezer room, 3 ... Refrigerator room, 4 ... Third room, 9 ...
Temperature control device, 10 ... Damper opening / closing device, 13 and 15 ... Third room cold air discharge passage, 14 ... Partition wall, 15 '... Third room cold air discharge passage outlet, 16 ... Refrigerator cold air return Aisle, 18 ……
Door, 19 ... second partition wall, 20 ... third chamber cold air return passageway, 21 ... bypass passageway, 22 ... shutter.

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 lower inner portion of the partition wall, and the inner surface of the third chamber has the above-mentioned temperature. A controller, a front surface is a door, and a bottom surface is partitioned by a second partition wall, and a third chamber cold air discharge passage and a third chamber cold air that are connected to the cool air discharge passage of the temperature controller of the third chamber are provided. A refrigerator provided with the partition wall having a return passage and a bypass passage that bypasses both passages and a refrigerating compartment cool air return passage, and a shutter that opens and closes the bypass passage and at the same time opens and closes the third cold air discharge passage outlet.