JPS6193375A - 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 the Invention The present invention relates to a refrigerator provided with a freezer compartment, a refrigerating compartment, and a third compartment through which cool air is circulated independently within the refrigerating compartment.

The structure of the conventional example and its problems The conventional example will be explained with reference to FIGS. 5, 6, 7, and 8. 1 is the refrigerator itself, and 2 is the outer box. It consists of an inner box 3° and a foamed heat insulating material 4 filled between these two boxes, and a freezer compartment 6. A refrigerator compartment 7 is formed at the bottom. In addition, a refrigerator 8 for the refrigeration cycle is installed at the rear of the freezer compartment 6.
A blower 9 for forced ventilation is provided, and the refrigerator compartment 70
Most of the temperature control device 10 is located at the rear. Bottom plate 5 of the partition wall 5
A third chamber 11 facing A is provided in communication with the temperature control device 10 and formed in a substantially airtight shape.

Said 1? A damper thermostat 12 for adjusting the amount of cold air to the refrigerator compartment and a damper thermostat 13 for independently adjusting the amount of cold air to the third chamber 11 are provided in the temperature adjusting device 1o. Cold air discharge passage 14 to chamber 7 to refrigerator compartment discharge port 14a.

It is configured to supply cold air from the cold air discharge passage 15 to the third chamber 11 through the third chamber discharge port 15a. 12' is a flap of the damper thermostat 12 that opens and closes the passage. Reference numeral 16 denotes a discharge air passage for the refrigerator compartment, which has one end opened to the discharge side of the blower 9, and the other end branched by a branch port 17, one of which is connected to the damper thermostat 12 for the refrigerator compartment, and the other end to the damper thermostat 12 for the compartment. It is open facing the damper thermostat 13. Also, 1
Reference numeral 8 denotes a suction air passage for the freezer compartment, with one end opening facing the bottom of the freezer compartment 6 and the other end facing the lower end of the cooler 8; , the other end is connected to 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 into the third chamber 11, which passes through the heat insulating material 2o and communicates with and merges into the refrigerator compartment suction air passage 19. Further, 22 is a refrigerator compartment door, and 23 is an egg shelf provided above the refrigerator compartment door 22.

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 cold air is supplied to the refrigerator compartment 7 in a controlled manner through the refrigerator compartment discharge air passage 16 and on the other hand from the damper thermostat 12 from the cold air discharge passage 14 to the refrigerator compartment 7, and then cooled through the refrigerator compartment suction air passage 19. It is returned to container 8. On the other hand, the refrigerator compartment discharge air passage 16
Cold air is branched from a branch port 17 provided in the interior of the compartment and is supplied to the third chamber 11 through a damper thermostat 13 in a controlled manner from a cold air discharge passage 16 into the partition wall 11 through a third chamber discharge port 15a. After that, from the suction port 21 to the refrigerator compartment suction air path 1
9 and returned to the cooler 8.

However, in recent years, this third chamber 11 has been set and maintained at a lower temperature range (for example, 0°C) than the normal refrigeration temperature (3 to 1Q°C), and fresh foods such as fish and meat can be stored for a relatively long time without losing freshness. In some cases, it can be stored for a period of time, and in this case, the amount of cold air flowing into the third chamber 11 is controlled by the damper thermostat 1.
3, the temperature is controlled to an appropriate level and maintained around the desired temperature of 0°C. However, the amount of cold air flowing into the refrigerator compartment 7 is reduced by the amount of cold air flowing into the third chamber 11, and the temperature rises particularly in the upper part of the refrigerator compartment 7 where cold air convection is poor and the egg shelf 23, which has an adverse effect on the food.

In addition, due to factors such as opening and closing the door under high humidity, dew condenses on the bottom of the third chamber 11 due to the temperature difference between the third chamber 11, which is set at a low temperature, and the upper part of the refrigerator compartment 7, which requires cold air convection. There were also quality issues.

OBJECTS OF THE INVENTION In view of the above points, the present invention aims to prevent a temperature rise in the upper part of the refrigerator compartment and dew condensation on the bottom surface of the third compartment.

Structure of the Invention In order to achieve this object, the present invention provides a cold air discharge port below the third chamber, which branches off from the middle of the cold air discharge passage to the refrigerator compartment and opens in communication with the front surface of the temperature control device. This prevents temperature rise in the upper part of the refrigerator compartment and dew condensation on the bottom of the compartment.

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. Incidentally, the same parts as those in the prior art are denoted by the same reference numerals, and the description thereof will be omitted.

In the figure, reference numeral 23' denotes a cold air discharge port that branches off from the middle of the cold air discharge passage 14 to the refrigerator compartment 7 and communicates with the front surface of the temperature control device 10.

In this configuration, the cold air that has passed through the cold air discharge passage 14 to the cold storage compartment 7 through the cold storage discharge air passage 16 and the damper thermostat 12 is branched from the cold air discharge port 23 and the cold air discharge port 14a, respectively. and is discharged,
The upper part of the refrigerator compartment 7 and the egg shelf 23 are cooled by the cold air from the cold air outlet 23', and the desired temperature can be maintained.
Further, due to the improvement of cold air convection, dew condensation on the bottom surface of the third chamber 11 is sublimated.

Effects of the Invention As is clear from the above-described configuration, the present invention comprises a freezer compartment, a refrigerator compartment, which are divided by partition walls, and a third compartment, which is located inside the refrigerator compartment and whose temperature is controlled independently of the refrigerator compartment. and two damper opening/closing devices that adjust the amount of cold air discharged to the refrigerator compartment and the third compartment, respectively, and a cold air discharge passage to the refrigerator compartment and the third compartment is integrally formed by housing the damper opening/closing device. Since the temperature control device is provided with a cold air discharge port that branches off from the middle of the cold air discharge passage to the refrigerator compartment and communicates with the front surface of the temperature adjustment device, the temperature of the upper part of the refrigerator compartment and the egg shelf does not rise. This not only prevents food from being affected, but also prevents condensation from forming on the bottom of the third chamber, which is set at a low temperature, due to factors such as opening and closing the door under high humidity. can also be sublimated by cold air convection, which has an extremely large practical effect.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of essential parts of a refrigerator showing an embodiment of the present invention;
Fig. 2 is a longitudinal sectional view of the refrigerator shown in Fig. 1, Fig. 3 is a sectional view showing the refrigerating room temperature control device of Fig. 2, and Fig. 4 is a sectional view of the refrigerating room temperature control device of Fig. 2. FIG. 5 is a front view of a conventional refrigerator room temperature control device, and FIG. 8 is a BB' cross-sectional view of the refrigerator room temperature control device shown in FIG. 7. 5... Division wall, 1o... Temperature control device, 11... Third chamber, 12.13...
Damper opening/closing device, 14...Cold air discharge passage to the refrigerator compartment, 15...Cold air discharge passage to the third chamber,
23'...Cold air outlet. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2 Figure 4 Figure 5Q Figure 7 Figure 8

Claims (1)

[Claims] A freezer compartment and a refrigerator compartment formed by partition walls, a third compartment located within the refrigerator compartment whose temperature is controlled independently of the refrigerator compartment, and an amount of cold air discharged to the refrigerator compartment and the third compartment. two damper opening/closing devices that adjust the damper opening/closing devices, respectively, a temperature regulating device that accommodates the damper opening/closing devices and integrally forms a cold air discharge passage to the refrigerator compartment and a third compartment, and a cold air discharge passage to the refrigerator compartment. A refrigerator comprising a cold air discharge port that branches from the middle and communicates with the front surface of the temperature control device, and is provided below the third chamber.