JPH0746016B2 - 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 FIGS. 5 and 6. 1 is a refrigerator main body, 2 is a freezing room, 3 is a refrigerating room, and 4 is a third room.
A cooler 5 is installed on the rear surface of the freezer compartment 2 to cool cold air.
An air blower 6 for forced circulation is provided in the refrigerating room 3, the third room 4, and the third room 4. Numeral 7 indicates cold air for freezing room 2, refrigerating room 3 and third room 4
It is a duct cover that is connected to a duct 8 for diverting the flow into the cooling chamber 3. The duct 8 is connected to the temperature control device 9 in the refrigerating chamber 3 and the third chamber 4. 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 11 on the lower left and right to the refrigerating chamber 3. A duct outlet portion 13 is provided so as to face the baffle 12 of the damper opening / closing device 10, and is connected to the duct 8 via a duct portion 13a.
On the other hand, the partition wall 14 is provided with a cold air return passage 15 of the refrigerating chamber 3.

In such a configuration, the air cooled by the cooler 5 flows into the freezer compartment 2 through the duct cover 7 by the blower 6 and is forcedly circulated, and reaches the temperature adjusting device 9 through the duct 8 and is controlled by the damper opening / closing device 10. The amount of cold air is controlled to an appropriate amount so as to reach a desired temperature, and the cool air discharge passage 11 and the cold air return passage 15 are provided.
It is returned to the cooler 5 via the and the same operation is continued thereafter to perform cooling.

Problems to be Solved by the Invention However, in the configuration as described above, the damper opening / closing device 10
Is activated and the baffle 12 is closed, the moist warm air in the refrigerating chamber 3 rises in the cold air discharge passage 11. Since the back surface of the third chamber 4 is also used as the surface of the temperature control device 9, no cold air discharge port, through which warm air escapes, is provided in the upper portion of the cool air discharge passage 11, and this warm air causes the duct portion 13a to exit. Due to frost formation on the baffle 12 and the A part of the cold air discharge passage 11 which is at a low temperature, the movable parts of the damper opening / closing device 10 and the duct outlet
There was often a problem that the sealing surface with 13 became defective and the normal temperature control function could not be performed. This tendency is strong especially when a high humidity load is stored in the refrigerating compartment 3 when the opening ratio of the baffle 12 of the damper opening / closing device 9 is low, such as in the winter when the ambient temperature is low. A common method is to provide a heat-retaining heater or to provide a notch or the like between the duct outlet section 13 and the baffle 12 contact seal to leak cold air and suppress the proximity of warm humidity to the vicinity of the baffle 12. Has been. However, in the former case, there are disadvantages such as an increase in mounting work due to an increase in the number of parts and an increase in cost and power consumption. The latter sacrifices the sealing property of the duct outlet 13 of the baffle 12, and the more the frost prevention is ensured, the more the amount of cold air leaks when fully closed. At a low outside temperature when the load amount is small and the baffle 12 has a high full-closed rate, there is a drawback that a large amount of cold air leakage causes the inconvenience of being too cold in the refrigerating chamber.

In view of the above problems, the present invention does not require the provision of a heat retaining heater in the vicinity of the baffle of the damper opening / closing device, and prevents the frost formation on the baffle portion without deteriorating the sealing property of the baffle and is stable. This ensures the temperature control in the refrigerator.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention arranges a partition above the baffle of the damper opening / closing device in the cold air discharge passage from the temperature control device to the refrigerating chamber, and A structure is provided in which cold air discharge ports to the refrigerating chamber are provided on the left and right above, and both cold air discharge ports communicate with each other above the partition.

Effect The present invention prevents the convection to the baffle portion by the partition above the baffle, even if the rising warm and humid air from the refrigerating chamber rises and enters the cool air discharge passage when the baffle of the damper opening and closing device is closed due to the above-described configuration, Warm and humid convection or stagnation occurs in the cold air discharge passage that communicates the left and right cool air discharge ports above the partition, and most of the frost forms on the wall surface of the main cool air discharge passage, so that frost formation on the baffle portion can be prevented.

Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1 to 4. The same components as those of the conventional one are designated by the same reference numerals and the description thereof will be omitted.

16 is a partition wider than the baffle width provided above the baffle 12. Above the partition 16, there are left and right cold air outlets 17 to the lower side of the refrigerating chamber 3, and both cold air outlets 17 are the first.
To the cold air discharge passage 18a. Both cold air outlet 17
Communicate with each other through the second cool air discharge passage 18b. The first and second cool air discharge passages 18a and 18b constitute the cool air discharge passage 18 in the temperature control device 19. As described above, with the above-described configuration, the damper opening / closing device 10 when the outside temperature is low, etc.
When a high humidity load is stored in the refrigerating chamber 3 when the baffle 12 has a high fully closed rate, the warm and humid water that rises and enters from the first cold air discharge passage 18a is arranged above the baffle 12. The partition 16 impedes downward convection and frost is formed on the inner wall surface of the second cold air discharge passage 18b which is at a low temperature due to the duct portion 13a while convection in the second cool air discharge passage 18b Therefore, it is possible to almost completely eliminate the frost formation due to the entry of warm and humid air in the refrigerator near the baffle 12. Also, the second
The frost on the inner wall surface of the cold air discharge passage 18b is sublimated by the dehumidified cool air that has passed through the cooler 5 when the opening ratio of the baffle 12 of the damper opening / closing device 19 is high, such as in the summer, and the cooler temperature is lower than that of the inner wall surface. After frost formation, smooth temperature control is maintained.

As described above, according to the present invention, a partition is provided above the baffle of the damper opening / closing device in the cool air discharge passage from the temperature control device to the refrigerating compartment, and the cooling air to the refrigerating compartment is provided on the left and right above the main partition. Since a discharge port is provided and both cold air discharge ports are connected above the partition, when the temperature and temperature of the baffle fully closed at high outside air temperature is high and the temperature and humidity control device enters below the partition, Convection or stagnation occurs in the cold air discharge passage that communicates the two cold air discharge ports, and most of the cold air discharge passage wall surface is frosted to prevent frost formation near the baffle.

As described above, the present invention does not increase the cost and power consumption by arranging a heater to prevent frost formation in the vicinity of the baffle as in the conventional example, and when the outside air temperature is low due to the cooling air leaking due to the deterioration of the fully closed seal of the baffle. In the refrigerating room, stable temperature control quality can be obtained without causing trouble such as excessive cooling and without adding any special member.

[Brief description of drawings]

FIG. 1 is a front view of a refrigerator showing an embodiment of the present invention, and FIG.
The drawing is a cross-sectional view taken along the line CC 'of FIG. 1, and FIG.
FIG. 4 is a vertical cross-sectional view of the refrigerator shown in FIG. 1, and FIG. 5 is a cross-sectional view of essential parts of a conventional refrigerator.
FIG. 6 is a vertical sectional view of the refrigerator. 3 ... Refrigerating room, 4 ... Third room, 10 ... Damper opening / closing device, 12 ... Baffle, 14 ... Compartment wall, 16 ... Partition, 17 ...
… Cold air discharge port, 18 …… Cold air discharge passage, 19 …… Temperature control device.

Claims (1)

[Claims] 1. A freezer compartment defined by partition walls, a refrigerating compartment, a third compartment whose temperature is controlled independently of the refrigerating compartment, and a damper opening / closing for adjusting the amount of cold air discharged into the refrigerating compartment. Device,
And a temperature control device that integrally forms a cool air discharge passage to the refrigerating chamber to accommodate the damper opening / closing device and that is provided in a lower back portion of the partition wall, and the third chamber has a ceiling surface at least at the partition wall. , A back surface is formed by the surface of the temperature control device, and a partition having a width wider than at least the baffle width above the baffle of the damper opening / closing device and the left and right sides above the partition are formed in the cool air discharge passage. A refrigerator in which a cold air outlet to the refrigerating chamber is provided, and the both cold air outlets are formed so as to communicate with each other above the partition.