JPH0743204B2 - refrigerator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a two-temperature refrigerator in which cold air is forcedly circulated in a refrigerating compartment and a freezing compartment.

Conventional Technology FIG. 4 shows a conventional example. Reference numeral 1 is a refrigerator body, 2 is a freezer compartment, 3 is a refrigerating compartment, 4 is a cooler, and 5 is a fan for forced cooling air circulation. Cold air is sent to the control box 7 of the freezer compartment 2 and the refrigerating compartment 3 via the duct 6, and the baffle 10 of the damper thermostat that opens and closes the cold air outlet 8 of the control box 7 is extended from the damper thermostat body 9 to store the cold air. An appropriate air volume is ensured by making a response at the temperature of a temperature sensing part (not shown) arranged to sense the internal temperature. The air flow path of the refrigerating compartment of the control box 7 is generally composed of an outlet 12 to the cryogenic container portion in the upper part of the refrigerating compartment and an outlet 13 for the refrigerating compartment, which is substantially in the same plane as the flap 10 and the damper arm 11 of the damper thermostat. It is located in the air passage above.

Problems to be Solved by the Invention However, in the above configuration, when the damper thermostat operates and the baffle 10 is closed, the moist warm air in the refrigerating chamber rises from the refrigerating chamber discharge port 13 and becomes a low temperature. The baffle 10 and the damper arm 11 or the damper thermostat body 9 that have been frosted up often cause troubles such as malfunctions of the movable parts of the damper thermostat and the sealing surface between the cool air discharge port 8 and the like, which makes it impossible to perform a normal temperature control action. Was there. This tendency is particularly strong when a humid load is stored in the refrigerating compartment when the opening ratio of the baffle of the damper thermostat is low, such as in winter when the ambient temperature is low. Generally, a method such as providing a notch or the like between the cool air discharge port and the baffle contact seal to leak cool air and prevent warm and moisture from approaching the vicinity of the baffle is generally used. 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. On the other hand, the latter sacrifices the sealability of the cold air discharge port of the baffle, and the more the frost prevention is ensured, the more the amount of cold air leaks when fully closed. There was a drawback that at a low outside temperature when the baffle fully closed rate was high, the inconvenience of excessive cooling of the cold storage due to the large amount of cold air leakage was likely to occur.

In view of the above problems, the present invention does not require the provision of a heat insulating heater near the baffle of the damper thermostat, and does not reduce the sealing property of the baffle, and prevents frost formation on the baffle portion and stabilizes the storage. This is to ensure the internal temperature control.

Means for Solving the Problems In order to solve the above problems, the present invention provides a discharge port of a discharge air passage from a refrigerating compartment control box to a refrigerating compartment with a partition above a baffle of a damper thermostat. In the upper part of the partition, a cool air discharge port to the lower side of the refrigerating chamber and a cool air discharge port to the upper side of the refrigerating chamber are sequentially arranged in the height direction.

The present invention has the above-described structure, and even if the warm and humid temperature rising from the refrigerating chamber rises and enters from the lower cool air discharge port when the damper thermostat baffle is closed, the convection to the baffle portion is prevented by the baffle upper partition and the lower cool air is generated. The baffle portion can be prevented from frosting by convection to the upward discharge port arranged above the discharge port and easily coming off.

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

14 is a partition wider than the baffle width provided on the upper part of the baffle 10. Above the partition 14, there is a cold air discharge port 15 to the lower side of the refrigerating compartment within the width of the partition, and it communicates with a lower refrigerating compartment discharge duct 16. Further, a cold air discharge port 17 to the upper side of the refrigerating chamber is arranged slightly above the cool air discharge port 15 to the lower side of the refrigerator and within the width of the partition 14. As described above, with the above-described configuration, when a high humidity load is stored in the refrigerating chamber when the baffle 10 of the damper thermostat 9 is in a high fully closed condition such as when the outside air is low, the lower refrigerating chamber discharge duct 16
The warm and humid air that rises and intrudes further out into the cool air discharge port 15 and then is blocked from convection downwards by the partition 14 arranged above the baffle 10, and within the width of the partition 14 cool air to the lower part of the refrigeration chamber. Since the cool air discharge port 17 to the upper part of the refrigerating chamber is arranged above the discharge port 15, it smoothly exits to the main discharge port, and the convection with the stagnation cold air at the bottom of the partition 14 is also the discharge port 15, Since all 17 are arranged above the partition 14 and within the width of the partition 14, it is suppressed, and frost formation due to infiltration of warm and humid air in the storage into the baffle can be almost eliminated. Also, when the fan for forced circulation of cold air is stopped with the refrigerator compartment door half closed under high temperature and high humidity, the warm and humid air inside the refrigerator collects in the upper part of the refrigerator and enters more from the cool air discharge port 17 above the refrigerator. Come on. At this time, the cold air spilling from the cooler 4 through the duct 6 rises in temperature due to the incomplete closing of the refrigerating compartment door, and the baffle 10 that is in an open state causes the cool air discharge port 17 above the refrigerating compartment. From the cool air discharge port 15 to the lower side of the refrigerating chamber arranged in the lower part, stagnation can be made to induce convection of warm and humid air entering from the cool air discharge port 15 to the upper side of the refrigerating chamber, but in this configuration, both the discharge ports 17, Since 15 are arranged in the width of the partition 14 arranged on the upper part of the baffle and sequentially in the height direction, it is possible to almost eliminate the frost formation due to the entry of warm and humid air into the vicinity of the baffle 10. .

As described above, according to the present invention, the cool air discharge port from the control box to the lower side of the refrigerating chamber is arranged below the cool air discharge port to the upper side of the refrigerating chamber, and both discharge ports are provided in the baffle of the damper thermostat. Since the partition is placed on the upper side of the partition that is wider than the baffle width and is located in the width of the main partition, warm and humid intrusion from below the control box when the baffle fully closed rate is high at low outside air. At the same time, when the temperature of the refrigerating compartment door is incompletely closed due to high temperature and high humidity, the convection between the upper and lower discharge ports in the upper part of the partition width prevents frost formation near the baffle part, even when warm and humid air enters from above the control box. It is a thing. 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 main part of a refrigerator showing an embodiment of the present invention,
2 is a sectional view taken along the line AA 'in FIG. 1, FIG. 3 is a sectional view taken along the line BB' in FIG. 1, and FIG. 4 is a longitudinal sectional view of a conventional refrigerator. 3 ... Refrigerator, 6 ... Duct, 9 ... Damper thermostat, 10 ... Baffle, 14 ... Partition, 15 ... Cold air outlet, 17 ... Cold air outlet.

Claims (1)

[Claims] 1. A damper thermostat that discharges cool air above and below a refrigerating chamber through a duct and adjusts the amount of this cold air to control the temperature, and above the baffle of this damper thermostat, at least above the baffle width. A partition having a wide width, a cool air discharge port below the refrigerating chamber provided in the partition width above the partition, and a cool air discharge port further below the refrigerating chamber are arranged in the partition width. A refrigerator equipped with a cool air discharge port above the refrigerating compartment.