JPH04143569A - Refrigerator - Google Patents

Abstract

PURPOSE:To prevent overcooling and undercooling due to the inflow of warm and wet air upon stopping of a fan by a method wherein a refrigerator is provided with a first damper thermostat, controlling the temperature of a first refrigerating chamber and a second refrigerating chamber, and a second damper thermostat, controlling the temperature of a low temperature chamber, at the deepest part of the low temperature chamber. CONSTITUTION:Cold air, passed through a first damper thermostat 14b, is branched at a discharging passage 21 and one of it is discharged from a lower discharging port 21a into a second refrigerating chamber 7 while the other part of it is guided by a cold air discharging passage 22 upward and is discharged into a first refrigerating chamber 3 through a discharging port 22a. Cold air, passed through a second damper thermostat 14a, is guided upward by the discharging passage 21 upward and is discharged from a discharging port 15a into a low temperature chamber 5 through a cold air discharging passage 15. The first damper thermostat 14b is provided below the discharging port 22a of the first refrigerating chamber 3 in such a manner whereby the inflow of warm and wet air into the damper thermostat 14b can be prevented. According to this method, the inflow of the warm and wet air due to the opening and/or closing of a door and the storing of foods can be prevented upon stopping a fan and a predetermined amount of cold air can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a refrigerator of forced cold air circulation type in which a freezing chamber, a refrigerating chamber, and a low-temperature chamber are sequentially arranged from above.

BACKGROUND OF THE INVENTION In recent years, there has been a trend in dog-shaped refrigerators to be divided into a plurality of compartments and to store food items separately depending on the type of food.

Against this background, Matsushita Electric Industrial Co., Ltd.
In February 1990, the KNR-D37V2fflK'jC refrigerator was released.

A conventional example will be explained below with reference to FIGS. 3 and 4. In FIG. 3, 1 is a freezer compartment, 2 is a first partition wall, 3 is a first refrigerator compartment, 4 is a second compartment wall, and 6 is maintained in a lower temperature range than the first refrigerator compartment 3. A cold room, 6 a third partition wall, and 7 a second refrigerator room serving as a vegetable storage room. Reference numeral 8 denotes a cooling chamber that houses a cooler 9 and a blower 1o that forcibly circulates cold air to each room; 11 is a duct cover disposed in front of the cooling chamber 8; 7 and cold room 6
It has a freezer compartment discharge port 11a in the upper part and a freezer compartment inlet port 11b in the lower part.

Reference numeral 12 designates a cold air discharge duct in which the cold air separated from the duct cover 11 passes through the first partition wall 2. Reference numeral 13 designates a cold air discharge duct that is connected to the cold air discharge duct 12 and stores the amount of cold air inside the cold air discharge duct. A second damper thermosf, 7) 14a is equipped for controlling temperature regulation. Reference numeral 16 denotes a cold air discharge passage formed in the second partition wall 4 and connected to the cold air discharge duct 13, and a discharge port 16ai that opens into the cold room 5.
have. 16 is a cold air discharge duct connected to the cold air discharge duct 12, and includes a plurality of discharge ports 16a opening into the first refrigerator compartment 3, discharge ports 16b opening into the rear of the second refrigerator compartment 7, and so on. :i, and is equipped with a first damper thermostat 14b for temperature adjustment to control the amount of cold air.

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 refrigerating chamber 7. A cold air return 18 is provided at the front of the third partition wall 6 and has a cold air return port 18a that opens to the second refrigerator compartment 7 and a cold air discharge port 18b that opens to the rear of the first refrigerator compartment 3. It is a passage. Reference numeral 19 is provided at the front of the first partition wall 2, and is open to the cold air return port 19a that opens to the first refrigerator compartment 3 and the cooling compartment 8. @Qi outlet 19b
There are 9 cold air return passages.

With this configuration, air is discharged from the discharge ports 16a and 16b to the first refrigerating compartment 3 and the second refrigerating compartment 7 via the first damper thermostat 14b. on the other hand,
Cold air is discharged into the cold room 6 from the discharge port 156 via the damper thermostat 14a and the cold air discharge passage 15. The cold air discharged into the second refrigerator compartment 7 is returned to the return port 18.
From a, the cold air discharged into the cold room 5 is also returned via the cold air discharge passage 1 provided in the third partition wall 6 and the second refrigeration station 18a to the cold air return passage 18. The cold air is opened into the refrigerator compartment 3 and is discharged into the first refrigerator compartment 3. Air is circulated by convection to the cooling chamber 8 via the air return passage 19, and each chamber is controlled to be cooled to an appropriate temperature.

Problems to be Solved by the Invention However, in the above configuration, due to the opening and closing of the door and the stored food, warm and humid air in the first refrigerator compartment 3 flows into the cold air discharge duct 16 through the discharge port 16a when the air blower 10 is stopped. The first damper thermostat 14b is frosted and frozen through the first damper thermostat 14b.
B malfunctioned and the 1st and 2nd refrigerator compartments 3.7 became overcooled.
The problem of lack of cooling occurred, and although a cold air trap could be installed to completely solve the above-mentioned problem, it had the disadvantage that it caused air path resistance and made it impossible to secure a predetermined amount of cold air. In addition, a first refrigerator is installed at the rear of the first refrigerator compartment 3. Since the second damper thermostat 1-148, i4b is provided, the first refrigerating chamber 3 has a narrow depth dimension, resulting in poor food storage efficiency and poor usability.

The present invention (-j: In response to the above problem, it prevents overcooling and undercooling due to the damper thermostat F'M failure due to the inflow of warm moisture when the blower is stopped, and also prevents overcooling and undercooling. To provide a whole refrigerator having an air passage structure that secures a predetermined amount of cold air, has a wide first refrigerator compartment, and is easy to use.

Means for Solving the Problems The present invention has the following features: A first damper thermostat that controls the temperature of the second refrigerator compartment and a second damper thermostat that controls the temperature of the cold room are provided in the inner part of the cold room. With the above configuration, since the first damper thermostat is located below the discharge port of the first refrigerating compartment, there is no inflow of warm moisture. Also, from the first refrigerator compartment, the first. Second
It becomes wider because the damper thermostat is eliminated.

Example Examples of the present invention will be described below. This will be explained according to FIG.

Components that are the same as those in the prior art are denoted by the same reference numerals, detailed explanations thereof will be omitted, and only different portions will be explained. In FIG. 1, reference numeral 20 denotes a cold air discharge duct which is connected to the cold air discharge duct 12 and extends across the entire height of the inner part of the first refrigerator compartment 3. Reference numeral 21 denotes a cold air discharge passage connected to the perfect cold air discharge duct 1-20, which is provided in the inner part of the cold room 5, and has a first temperature adjustment passageway inside thereof for controlling the amount of cold air. A second damper thermostat 14b, 14a is provided. The cold air discharge passage 21 is a second damper Zamostara l-1.
The passage through the first damper thermostat 14b'i is connected to the cold air discharge passage 15, and the passage through the first damper thermostat 14b'i is connected to the cold air discharge passage 15.
It branches in the middle, one has a discharge port 21a that opens at the rear of the second refrigerated compartment, and the other opens to the first refrigerated compartment 3,
It is connected to a cold air discharge passage 22 provided at the back of the first refrigerator compartment 3. The cold air discharge passage 22 has a plurality of discharge ports 22a that open into the first refrigerator compartment 3.

The cold air convection of the air passage configured as described above will be explained below.

The cold air that has passed through the first damper servostat 14b'z is branched at the discharge passage 21, and one side is divided into the lower discharge ports 2i &
The other cold air is discharged into the second refrigerator compartment 7, and the other is guided upward by the cold air discharge passage 22 and discharged into the first refrigerator compartment 3 through the discharge port 22a. Second damper thermostat 1
4a is guided upward through the discharge passage 21, and is discharged into the cold room through the discharge port 16a via the cold air discharge passage 15. The cold air discharged into the cold room 6 passes through the cold air return passage 17 and the second refrigerator compartment 7, and enters the first refrigerator compartment 3 through the cold air return passage 18 together with the cold air discharged from the discharge port 21a. The cold air that is opened and discharged into the first refrigerator compartment 3 through the discharge port 22a is discharged from the suction port 19a.
Air is circulated by convection to the cooling chamber 8 via the air return passage 19, and each chamber is controlled to be cooled to an appropriate temperature.

In this way, the first damper thermostand 14b is
Since it is provided below the discharge port 22a of the first refrigerator compartment 3, warm and moisture does not flow into the damper thermostat 14b, causing malfunction due to frost formation and freezing, and the temperature is kept at an appropriate temperature without overcooling or undercooling. can be controlled.

Effects of the Invention As described above, according to the present invention, the damper thermometer is provided at the back of the cold room, so that the outlet to the first refrigerator compartment is located below the opening and closing of the door. Even in a simple air path configuration when the blower is stopped, warm and humid air will not flow in, the damper thermostat will not malfunction, and a predetermined amount of cool air can be secured. Furthermore, the members at the back of the refrigerator compartment are made more compact, the depth dimension is wider, and the user-friendliness is improved.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a refrigerator showing an embodiment of the present invention, Fig. 2 is a front view of the refrigerator of the invention, Fig. 3 is a longitudinal sectional view of a refrigerator showing a conventional example, and Fig. 4 is a conventional example. Fig. 2 is a front view of the refrigerator. 1...Freezing room, 2...First partition wall,
3...First cold room, 4...Second compartment wall, 6...Cold room, 6...Third compartment wall, 7 ...Second refrigerator compartment, 9...Cooler, 1o...Blower, 12.20...
Cold air discharge duct, 14b...first damper thermostat), 14a...second damper thermostat, IEl, 19...cold air return passage. Name of agent: Patent attorney Akira Okaji and two others

Claims (1)

[Claims] a freezing compartment, a first refrigerating compartment partitioned from the freezing compartment by a first partition wall, and lower than the first refrigerating compartment partitioned by the first partition wall and the second partition wall; A refrigerator in which a cold room maintained in a temperature range and a second cold room separated from the cold room by a third partition wall are sequentially arranged from above, and a cooling room provided in the deep part of the freezing room. a cold air forced circulation fan, a discharge duct that guides cold air from the blower to each of the rooms, a return duct that leads cold air from each of the rooms to the cooler, and the first refrigerating room and the second refrigerating room. A first damper thermostat that controls the temperature of the room and a second damper thermostat that controls the temperature of the cold room, the first and second damper thermostats being provided in the inner part of the cold room. refrigerator.