JPH0820168B2 - 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.

Prior Art 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. are 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) to the refrigerating chamber 3, and the discharge amount of cool air to the third chamber 4. It has a damper opening / closing device 10 for adjusting the temperature, 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. The cold air discharge passage 13 to the third chamber 4 provided in the temperature control device 9 is connected to the 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. The third chamber 4 is substantially sealed by a partition wall 14 on the ceiling surface, a wall surface of the temperature control device 9 on the back surface, a door 18, and a second partition wall 19 on the bottom surface. In such a configuration, the air cooled by the cooler 5 flows into the freezer compartment 2 by the blower 6 through the discharge port 7 ′ of the duct cover 7 and is forcedly circulated, and also through the duct 8 to the temperature control device 9. The amount of cool air is controlled to a desired temperature by a damper opening / closing device (not shown) for the refrigerating room and a damper opening / closing device 10 for the third chamber, respectively, and a cooler is provided via each discharge passage and return passage. After returning to 5, the same operation is continued and cooling is performed. Here, the third
Chamber 4 is lower than the refrigerator temperature (3-5 ° C) and higher than the freezer temperature, chilled (about 0 ° C), ice temperature (about -1 ° C),
The temperature can be controlled and switched to a temperature suitable for fresh preservation of each food, such as partial freezing (about -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. Room 3
When a large amount of food is stored in the container, the operation is difficult and the adjustment position is at the back, so that it is difficult to perform accurate adjustment. In order to solve this 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 the conversion mechanism for operating the dial 12 is also provided. However, 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 a temperature control mechanism for the third chamber at a position in front of the third chamber where it is easy to see and adjust, and at the same time, an opening characteristic switching mechanism for the damper opening / closing device for the third chamber. It provides cost reduction by abolishment.

Means for Solving the Problems In order to solve the above problems, the present invention adjusts the set temperature of the third chamber without operating the characteristic adjustment mechanism of the damper opening / closing device main body for the third chamber. A cool air discharge passage to the third chamber and a cool air discharge passage to the temperature sensing unit are connected to the cool air discharge passage outlet in the front of the chamber, and a shutter for adjusting the amount of cool air introduced to the temperature sensing unit is provided in the cold air discharge passage. It is arranged to switch the temperature-sensitive temperature by controlling the amount of cold air introduced into the temperature-sensing section and switch the set temperature of the third chamber.

Effect According to the present invention, the amount of cool air discharged into the third chamber can be adjusted by the shutter to the temperature sensing portion of the damper opening / closing device. That is, when the discharge cold air discharge amount to the temperature sensing unit is increased or decreased by the shutter, a low temperature due to the discharged cold air amount other than the internal temperature of the third chamber is detected, and the damper opening / closing device is opened depending on the detection degree. The amount for reducing the degree is adjusted, the amount for reducing the amount of cool air discharged to the third chamber is adjusted, and the set temperature is switched.

Embodiments Embodiments of the present invention will be described below with reference to FIGS. 1, 2, and 3. 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.

1 is a central sectional view of the refrigerator of the present invention, and FIGS. 2 and 3 are detailed front sectional views of the partition wall 14 in the direction of arrow AA of FIG.

Reference numeral 20 denotes a shutter having a guide piece 21 facing the third chamber cold air discharge passage 15 and partitioning the third chamber 4 and the cool air lead-out path 15 ′ to the temperature sensing unit 11, which is opened to the third chamber 4. It has an opening 22. Reference numeral 23 denotes a cool air guide member that constitutes the cool air lead-out path 15 ′, which is connected to the shutter opening 22 and is a third
The opening 24 facing the chamber 4 and the slit opening 25 facing the third chamber 4 are provided in the accommodating portion of the temperature sensing portion 11. With such a configuration, FIG.
All the cool air entering the ‘′ is discharged from the shutter opening and the opening 24 of the cool air guide member 23, and there is no introduction of cool air to the temperature sensing unit 11, and the temperature of the third chamber is set to the lowest. Shows. Further, FIG. 3 shows a state in which the shutter 20 is moved so as to raise the set temperature of the third chamber. That is, a part of the discharged cool air is introduced into the temperature sensing unit 11 through the cool air discharge passage 15 ′ by the guide piece 21 of the shutter 20. Temperature sensor 11
Detects the temperature of the introduced discharge cold air through the slit port 25 of the cool air discharge guide member 23, and also detects the introduced discharge cold air temperature to make the opening / closing characteristic of the damper opening / closing device 10 in the closing direction. The amount of cold air supplied to the third chamber cold air discharge passage 15 is reduced, and the set temperature of the third chamber 4 is adjusted to a higher temperature.

As described above, according to this embodiment, by disposing the set temperature switching shutter 20 of the third chamber 4 at a position in front of the third chamber 4 which is easy to see and operate, the third chamber 4 can be easily operated. It is possible to change the set temperature.

EFFECTS OF THE INVENTION As described above, according to the present invention, the following effects can be obtained by providing the shutter and the temperature-sensing portion of the damper opening / closing device in the cool air discharge passage that is connected to the cool air discharge passage in front of the third chamber. .

(1) Since the set temperature of the third chamber can be easily switched in front of the third chamber, it is not necessary to remove the food in the refrigerator and adjust the dial to the setting display which is hard to see inside the refrigerator as in the conventional case. ,
Further, since the shutter portion is not blocked by food, it is easy to know which setting state is currently set.

(2) Since the characteristics of the damper opening / closing device of the third chamber itself are not changed by adjusting the internal mechanism to change the set temperature, the damper opening / closing device does not require an additional opening characteristic switching mechanism, which is low cost. A damper opening / closing device can be adopted.

(3) The opening characteristic of the damper opening / closing device with respect to the temperature-sensing temperature is that the opening degree with respect to a certain temperature is usually adjusted. The variation becomes large for each switchgear, and the set temperature variation of the third chamber to which the switchgear is applied tends to become large, whereas the present invention uses only the opening characteristic point for the adjusted temperature-sensitive temperature of the damper switchgear. Since the temperature is switched only by introducing a simple amount of cold air into the temperature sensing portion, the set temperature can be switched with high accuracy.

[Brief description of drawings]

FIG. 1 is a sectional view of a refrigerator showing one embodiment of the present invention, and FIG.
FIG. 3 and FIG. 3 are front sectional views of the partition wall in the direction of arrow AA in FIG. 1, and FIG. 4 is a sectional view of a conventional refrigerator. 2 ... Freezer room, 3 ... Refrigerator room, 4 ... Third room, 9 ...
Temperature control device, 10 ... damper opening and closing device, 11 ... temperature sensing part of damper opening and closing device, 13 and 15 ... third chamber cool air discharge passage,
14 …… compartment wall, 15´ …… cold air outlet, 18 …… door, 19 ……
Second partition wall, 20 ... Shutter.

Claims (1)

[Claims] 1. A freezer compartment divided into two compartment walls, a refrigerating compartment, a third compartment constituting a ceiling surface at least by the compartment wall, and a cold air discharge amount to the third compartment is adjusted. A damper opening / closing device, a temperature control device accommodating the damper opening / closing device to form a cool air discharge passage to the third chamber, and a temperature control device formed on the partition wall and connected to the cold air discharge passage to the third chamber. A cool air discharge passage for supplying cool air, a third chamber connected to the cool air discharge passage of the partition wall, a cool air discharge path to a temperature sensing portion of the damper opening / closing device, and a shutter arranged in the cool air discharge path. Refrigerator with and.