JP2953771B2 - refrigerator - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator of a forced air circulation system in which a freezing room, a refrigerating room, and a low-temperature room are sequentially arranged from above.

2. Description of the Related Art In recent years, large refrigerators tend to be divided into a plurality of rooms and stored according to the type of food.

Against this background, Matsushita Electric Industrial Co., Ltd.
The NR-D37V2 electric refrigerator was released in February of the year.

Hereinafter, a conventional example will be described with reference to FIGS. In FIG. 3, 1 is a freezing room, 2 is a first partition wall, 3 is a first refrigerator room, 4 is a second partition wall, and 5 is a lower temperature zone than the first refrigerator room 3. A low-temperature room, 6 is a third partition wall, and 7 is a second refrigeration room which becomes a vegetable storage room. 8 is a cooling chamber containing a cooler 9 and a blower 10 for forcibly circulating cool air to each chamber, 11 is a duct cover arranged in front of the cooling chamber 8,
Discharge of cold air to the freezer compartment 1, the first and second refrigerating compartments 3, 7 and the low-temperature compartment 5 is diverted, and has a freezer compartment discharge port 11a at an upper portion and a freezer compartment inlet 11b at a lower portion. Reference numeral 12 denotes a cool air discharge duct in which the cool air diverted from the duct cover 11 is arranged to penetrate the first partition wall 2, and 13 is the cool air discharge duct 12.
A second air damper thermostat 14a for controlling temperature, which controls the amount of cold air, is provided in the inside of the cold air discharge duct connected to. Reference numeral 15 denotes a cool air discharge passage formed in the second partition wall 4 and connected to the cool air discharge duct 13, and has a discharge port 15a opened to the low temperature chamber 5. 16 is a cool air discharge duct 12
And a plurality of discharge ports 16a opening in the first refrigerator compartment 3 and a discharge port 16b opening in the rear part of the second refrigerator compartment 7, and the inside thereof has a cool air volume. A first damper thermostat 14b for controlling the temperature to be controlled is provided. Reference numeral 17 denotes a cold air return passage formed in the third partition wall 6 and penetrating between the low temperature chamber 5 and the second refrigerator compartment 7. Reference numeral 18 denotes a cool air return passage provided at the front of the third partition wall 6 and having a cool air return port 18a opened to the second refrigerator compartment 7 and a cool air discharge port 18b opened to the rear of the first refrigerator compartment 3. It is. 19 is the first
This is a cool air return passage provided at the front of the partition wall 2 and having a cool air return port 19a opened to the first refrigerator compartment 3 and a cool air discharge port 19b opened to the cooling chamber 8.

With such a configuration, the first refrigerator compartment 3 and the second refrigerator compartment 7
To the discharge port 1 via the first damper thermostat 14b.
Cool air is discharged from 6a and 16b. On the other hand, cool air is discharged from the discharge port 15a into the low temperature chamber 5 via the damper thermostat 14a and the cool air discharge passage 15. The cool air discharged to the second refrigerator compartment 7 returns from the return port 18a, and the cool air discharged to the low temperature room 5 also returns via the cool return passage 17 provided in the third partition wall 6 and the second refrigerator compartment 7. Cold air return passage 1 from mouth 18a
8, the first refrigerator compartment 3 is opened into the first refrigerator compartment 3.
Together with the cool air discharged to the cooling chamber 8 through a cool air return passage 19 provided in the first partition wall 2, and controls the cooling of each chamber to an appropriate temperature.

Problems to be Solved by the Invention However, in the above configuration, the opening and closing of the door and the stored food allow the hot and humid air in the first refrigerator compartment 3 to flow in from the discharge port 16a when the blower 10 is stopped and to flow through the cool air discharge duct 16. The first damper thermostat 14b enters the first damper thermostat 14b and becomes frosted and freezes, and the first damper thermostat 14b malfunctions, causing the first and second refrigerating compartments 3 and 7 to be overcooled or uncooled. In order to solve this problem, a cold air trap may be provided, but there is a drawback that a predetermined amount of cold air cannot be secured due to airflow resistance. Further, since the first and second damper thermostats 14a and 14b are provided at the rear of the first refrigerator compartment 3, there is a disadvantage that the depth dimension of the first refrigerator compartment 3 is narrow, the food storage efficiency is poor, and the usability is poor. there were.

In view of the above problems, the present invention prevents the damper thermostat from malfunctioning due to the inflow of warm and humid air when the blower stops, prevents overcooling and uncooling, and secures a predetermined amount of cool air in the first and second refrigerator compartments. In addition, the present invention provides a refrigerator having an air passage structure in which the first refrigerator compartment is wide and easy to use.

Means for Solving the Problems Accordingly, the present invention provides a first damper thermostat for controlling the temperatures of the first and second refrigerator compartments and a second damper thermostat for controlling the temperature of the low temperature compartment, which is located at the back of the low temperature compartment. It is provided in the section.

Operation According to the above-described configuration, the first damper thermostat is located below the discharge port of the first refrigerator compartment, so that the inflow of warm and humid air is eliminated. Also, the first and second refrigerator compartments
It becomes wider because there is no damper thermostat.

Embodiment An embodiment of the present invention will be described below with reference to FIGS.

The same components as those in the related art are denoted by the same reference numerals,
A detailed description thereof will be omitted, and only different portions will be described. In FIG. 1, reference numeral 20 denotes a cool air discharge duct provided over the entire depth of the first refrigerator compartment 3 and connected to the cool air discharge duct 12. Reference numeral 21 denotes a cool air discharge passage, one of which is connected to the cool air discharge duct 20. The cool air discharge passage 21 is provided at the back of the low temperature chamber 5 and has therein first and second damper thermostats 14b for temperature control for controlling the amount of cool air. Equipped with 14a. The cold air discharge passage 2
1 is the passage through the second damper thermostat 14a,
The passage connected to the cool air discharge passage 15 and passing through the first damper thermostat 14b branches on the way, one of which has a discharge port 21a which opens to the rear of the second refrigerator compartment 7, and the other of which has the first discharge port 21a. It opens to the refrigerator compartment 3 and is connected to a cool air discharge passage 22 provided at the back of the first refrigerator compartment 3. The cool air discharge passage 22
Has a plurality of discharge ports 22a opened to the first refrigerator compartment 3.

A description will now be given of the convection of the cool air in the wind path configured as described above.

The cool air that has passed through the first damper thermostat 14b is branched in the discharge passage 21, and one of the cool air flows through the lower discharge port 21a through the second discharge port 21a.
And the other is guided upward by a cool air discharge passage 22 and discharged into the first refrigerator compartment 3 through a discharge port 22a. The cool air flowing through the second damper thermostat 14a is guided upward in the discharge passage 21 and discharged through the cool air discharge passage 15 from the discharge port 15a into the low-temperature chamber 5. Then, the cool air discharged into the low-temperature chamber 5 passes through the cool air return passage 17 and the second refrigeration room 7, and is released into the first refrigeration room 3 through the cool air return passage 18 together with the cool air discharged from the discharge port 21a. Together with the cool air discharged into the first refrigerator compartment 3 from the discharge port 22a.
The air circulates from the suction port 19a to the cooling chamber 8 through the cool air return passage 19 to cool the respective chambers to an appropriate temperature.

Thus, the first damper thermostat 14b is
Since it is provided below the discharge port 22a of the first refrigerating compartment 3, warm and humid air does not flow into the damper thermostat 14b, and malfunctions due to frost formation and freezing. Can be controlled.

Effects of the Invention As described above, according to the present invention, the damper thermostat is provided at the back of the low-temperature chamber, so that it is located below the discharge port to the first refrigerator compartment. Moisture does not flow in the simple air path configuration when the blower is stopped, the malfunction of the damper thermostat does not occur, and a predetermined amount of cool air can be secured. Further, there is an excellent effect that the members at the back of the refrigerator compartment are compact, the depth dimension is wide, and the usability is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a refrigerator showing one embodiment of the present invention, FIG. 2 is a front view of the refrigerator of the present invention, and FIG. 3 is a longitudinal sectional view of a refrigerator showing a conventional example. FIG. 4 is a front view of a conventional refrigerator. 1 ... freezer compartment, 2 ... first partition wall, 3 ... first refrigerator compartment, 4 ... second partition wall, 5 ... low temperature room, 6 ... third partition wall, 7 ... ... Second refrigerator compartment, 9 ... Cooler, 10 ... Blower, 12,20 ... Cold air discharge duct, 14b ... First damper thermostat, 14a ... Second damper thermostat, 18,19 ... Cold air return passage.

Claims (1)

(57) [Claims] 1. A freezer compartment, a first refrigerator compartment defined by the freezer compartment and a first partition wall, and the first refrigerator compartment defined by the first refrigerator compartment and a second partition wall. In a refrigerator in which a low-temperature room maintained in a temperature band lower than that of the refrigeration room and a low-temperature room and a second refrigeration room partitioned by a third partition wall are sequentially arranged from above, A cooler provided in the section, a blower for forced air circulation, a discharge duct for guiding cool air from the blower to each of the chambers, a return duct for guiding cool air from each of the chambers to the cooler, and a first refrigerator compartment. And a first damper thermostat for controlling the temperature of the second refrigerator compartment, and a second damper thermostat for controlling the temperature of the low temperature compartment, wherein the first and second damper thermostats are located at the back of the low temperature compartment. The refrigerator provided in the section.