JPS6193376A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a refrigerator that is equipped with a freezer compartment and a refrigerator compartment, and is provided with compartments for independently circulating cold air within the refrigerator compartment, and particularly relates to a refrigerator that is equipped with a compartment that independently circulates cold air, and particularly relates to a refrigerator that is equipped with a freezer compartment and a refrigerator compartment, and has compartments for independently circulating cold air. Concerning the configuration.

The structure of the conventional example and its problems The conventional example will be explained with reference to FIG. 6, FIG. 6, FIG. 7, and FIG. 8. 1 is the refrigerator itself, outer box 2. It is composed of an inner box 3 and a foamed heat insulating material 4 filled between these two boxes, and is divided by a partition wall 6 into a freezing compartment 6 at the top and a refrigerating compartment 7 at the bottom. Also, behind the freezer compartment 6, there is a cooler 8 for the refrigeration cycle.
A blower 9 for forced ventilation is provided, and a refrigeration/room temperature open side l device 10 is provided at the rear of the top of the refrigerator compartment 7, and a compartment 11 that communicates with the refrigerator compartment temperature divider 11 device 10 is provided at the top. is provided. Cold air is supplied to the refrigerator compartment 7 in the refrigerator compartment temperature control device 1o! 1'C4: A damper thermostat 12 for adjusting and a damper thermostat 13 for adjusting the amount of cool air to the compartment 11 are provided, and the refrigerator compartment outlet 1
4. Supply cold air through the compartment discharge ports 15, respectively. 1
Reference numeral 6 denotes a discharge air passage for the refrigerator compartment, which has one end opened to the discharge side of the forced draft blower 9, and the other end branched from a branch port 17, one of which is connected to the damper thermostat 12 for the refrigerator compartment, and the other end of which is connected to the compartment. It opens facing the damper thermostat 13 for the room. Reference numeral 18 designates a suction air passage for the freezer compartment, which has one end facing the bottom of the freezer compartment 6 and the other end facing the lower end of the cooler 8. Reference numeral 19 represents the top of the refrigerator compartment 70, and the other end faces the cooler 8.
are open facing the lower end of the partition wall 6.
It is formed by a heat insulating material 20 inside. Reference numeral 21 denotes a suction port for cold air flowing in the compartment 11, which passes through the heat insulating material 20 and communicates with and merges with the refrigerator compartment suction air path 19.

In this configuration, the cold air generated in the cooler 8 cools the freezer compartment 6 by the blower 9 and is returned to the cooler 8 through the freezer compartment suction air path 18. At the same time, the refrigerator compartment discharge air passage 1
6, on the other hand, it is controlled and supplied to the refrigerator compartment 7 from the discharge port 14 via the damper thermostat 12 in an appropriate amount, and then returned to the cooler 8 through the refrigerator compartment suction air passage 19. On the other hand, the air is branched from a branch port 17 provided in the refrigerating room discharge air passage 16, and after being supplied in a controlled manner into the compartment 11 from the discharge port 16 via the damper thermostat 13, the air is stored in the refrigerator from the suction port 21. It joins the room suction air path 19 and is returned to the cooler 8.

However, while the blower 9 is stopped, the cold air generated by the cooler 8 accumulates in the lower part of the refrigerator compartment suction air passage 19 and finally flows into the compartment 11 through the compartment suction port 21. Therefore, even though the internal temperature of the compartment 11 is controlled to a predetermined temperature ω1j by the damper thermostat 13, the food in the compartment 11 may be supercooled and frozen. Also, even when the blower 9 is in operation, if cold air is supplied only to the refrigerator compartment 7 by the control of the thermostats 12 and 13, the cold air returns to the cooler 8 through the refrigerator compartment suction air passage 19, In some cases, the air flowed into the compartment 11 through the chamber suction port 21. In particular, when the compartment temperature is set to a lower temperature range (e.g. -3 to ○°C) than the refrigerator room temperature (3 to 10 degrees Celsius), the flow inside the refrigerator compartment 7 is large, both in terms of capacity and load. The cold air that has sufficiently exchanged heat with each part of the room has approximately 5
The temperature had risen to ~10°C, and this could have flowed into the compartment 11. Not only does this increase the temperature of the compartment and adversely affect the food, but also condensation occurs when the cold air in the negative temperature range in the compartment 11 and the cold air in the positive temperature range in the refrigerator compartment suction air passage 19 merge. There was a risk that the ice would develop and block the opening of the compartment suction port 21 or obstruct the refrigerator compartment suction air passage 19, thereby impairing the original cooling function of the compartment 11 and the refrigerator compartment 7.

OBJECT OF THE INVENTION In view of the above-mentioned points, the present invention aims to prevent freezing in the suction path of a compartment.

Structure of the Invention In order to achieve this object, the present invention allows the suction path of the compartment to communicate with and protrude into the freezer compartment suction air path or the refrigerator compartment suction air path, and opens only one direction on the leeward side by providing a weir. This prevents cold air from flowing back into the compartment from the cooler when the blower is stopped, and also dams warm air flowing into the compartment from the refrigerator compartment suction air path when the blower is in operation, thereby preventing freezing.

Description of examples Hereinafter, FIGS. 1 and 2 show an embodiment of the present invention.

This will be explained according to FIGS. 3 and 4. Components that are the same as those in the prior art are designated by the same reference numerals and description thereof will be omitted. 21' in the figure
passes through the heat insulating material 20 at the suction port of the compartment 11 and communicates with and merges with the refrigerator compartment suction air path 19, but around the suction port 21' there are protrusions 22 and 22 that protrude into the refrigerator compartment suction air path. The freezer compartment suction air passage 18 and the refrigerator compartment suction air passage 19 are surrounded by a partition portion 22'. The protruding portion 22 has an abbreviated contact portion 22a that is in contact with one top surface of the refrigerator compartment suction air passage 19 on the refrigerator compartment suction port 23 side, and an abbreviation-shaped contact portion 22a that is in contact with one top surface of the refrigerator compartment suction air passage 19 on the refrigerator compartment suction port 23 side, and a moderate portion in the refrigerator compartment suction air passage 19 on the cooler 8 side. The weir 22b protrudes at a height of

In this configuration, the cold air that descends from the cooler 8 and accumulates in the lower part of the refrigerator compartment suction air passage 19 while the blower 9 is stopped is dammed by the dam 22b and is prevented from flowing into the compartment 11.

Furthermore, while the blower 9 is in operation, most of the cold air flowing in from the refrigerator compartment suction port 23 and directed toward the compartment compartment suction port 21' flows along the contact portion 22a and flows to the cooler 8, so that the cold air flowing into the compartment compartment suction port 21' flows along the contact portion 22a and flows to the cooler 8. It is difficult for dew condensation to form around the opening of the mouth 21'. Further, even if some dew condensation occurs due to load conditions, the amount of condensation can be suppressed to a level that is sufficient to sublimate with the amount of air flowing through the compartment suction port 21'. In addition, in this embodiment, a configuration in which a compartment suction air path is provided within the refrigerator compartment suction air path is explained.
A similar effect can be obtained by providing a compartment suction air passage within the freezer compartment suction air passage.

Effects of the Invention As is clear from the above-described configuration, the present invention comprises a freezer compartment partitioned into an upper part by a partition wall, a refrigerator compartment partitioned into a lower part, and a partitioned compartment at the top of the refrigerator compartment. In the partition wall, there is a cooling room suction air path and a weir is formed and opened in one direction on the leeward side, so the cooler that accumulates in the refrigerator room suction air path when the blower is stopped. The cold air from the room is blocked by the dam and does not flow into the compartment, and the food in the compartment is not overcooled or frozen.

Furthermore, even when the blower is in operation, most of the cold air drawn into the refrigerator compartment suction air path that flows through the compartment suction port flows along the protrusion, resulting in dew condensation near the communication opening of the compartment compartment suction port. Freezing is unlikely to occur, and even if condensation or freezing occurs due to load conditions, it is possible to suppress it to a sufficient level to sublimate with the air volume of the compartment suction air path.

Therefore, there is no fear of ice clogging of the suction path of the compartment, and the practical effect of preventing cooling function failure is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of a suction air passage in a partition wall of a refrigerator showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of a refrigerator using the main structure of FIG. 1, and FIG. Fig. 2 is a side sectional view of the refrigerator room temperature control device part, Fig. 4 is a side sectional view of the compartment suction port part of Fig. 2, and Fig. 6 is a sectional view of the main part of the suction air passage in the partition wall showing a conventional example. Figure 6 is a sectional view of a refrigerator using the main structure shown in Figure 5, Figure 7 is a side sectional view of the refrigerator compartment temperature control device shown in Figure 6, and Figure 8 is a compartmental view of the compartment shown in Figure 6. It is a side sectional view of a suction port part. 6...Division wall, 6...Freezing room, 7...
...Refrigerating room, compartment suction route protrusion, 22b...
...weir. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2! Figure 5

Claims (1)

[Claims] A freezer compartment is divided into an upper part by a partition wall, a refrigerator compartment is divided into a lower part, a cooler is housed at the rear of the freezer compartment, and a cooler is installed at the top of the refrigerator compartment to supply cold air. A freezer compartment suction air passage that communicates with the cooler from the freezer compartment; a refrigerator compartment suction air passage that communicates with the cooler from the refrigerator compartment; A compartment suction air passage is arranged that opens in one direction on the leeward side with respect to the freezer compartment suction air passage or the refrigerator compartment suction air passage and communicates with and protrudes from the cold air suction port in the compartment, and A refrigerator comprising a weir provided at the opening on the leeward side of the compartment suction air passage from the bottom of the freezer compartment suction air passage or the refrigerator compartment suction air passage.