JPH08105679A - Refrigerator - Google Patents

Abstract

PURPOSE: To eliminate damage of fresh preservability in a vegetable chamber due to a high temperature of the chamber in summer or according to installing conditions. CONSTITUTION: A cold storage chamber 21, a freezing chamber 22 and a vegetable chamber 23 are sequentially formed from above by partition plates 19, 20 heat insulated in a heat insulation box 18. The inlets of a discharge duct 33 for the storage chamber and a discharge duct 34 for the vegetable chamber for feeding cold gas to the chambers 21, 23 are controlled by a damper having a shared flap, the one cold gas is returned from the chamber 21 to a cooler chamber via a return duct 39 for the storage chamber, and the other cold gas is returned from the chamber 23 to the cooler chamber via a return duct 41 for the vegetable chamber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a refrigerator formed in the order of a freezer compartment and a vegetable compartment.

[0002]

2. Description of the Related Art In recent years, as the demand for frozen foods has increased, the freezer compartment has been used more frequently than the refrigerator compartment. Therefore, in order to improve the usability of the refrigerator, the inside of the refrigerator compartment, the freezer compartment, and the vegetable compartment are arranged from the top. The demand for refrigerators formed in this order is increasing.

A method of cooling each room in a conventional refrigerator having a refrigerating room, a freezing room and a vegetable room formed in this order from the top is disclosed in, for example, Japanese Unexamined Patent Publication No. 3-267677.

A method of cooling each room in the conventional refrigerator will be described below with reference to the drawings.

FIG. 6 is a perspective view showing a conventional refrigerator in which a refrigerating compartment, a freezing compartment and a vegetable compartment are removed in order from the inside, and FIG. 7 is a vertical sectional view of the refrigerator. In the figure, 1 is a heat-insulating box, 2 is a refrigerating room formed in the heat-insulating box 1, 3 is a freezing room, 4 is a vegetable room, 5 is a cooler arranged at the back of the freezing room 3, and 6 is A cooler room provided with a cooler 5, 7 is a fan device for sending the cool air cooled by the cooler 5, 8 is a refrigerating room discharge air passage for blowing cool air to the refrigerating room 2, and 9 is a vegetable room 4
A return air passage for a refrigerating compartment that blows cool air to the room 10, 10 is a return air passage for a vegetable compartment that returns the cool air that has been blown to the vegetable compartment 4 to the cooler 5, 11
Is a discharge port for discharging cold air into the freezing chamber 3, 12 is a return air passage for the freezing chamber for returning the cool air blown into the freezing chamber 3 to the cooler 5, 13
Is a refrigerating compartment outlet for ejecting cool air from the refrigerating compartment outlet air passage 8, 14 is a refrigerating compartment return opening for returning cool air to the refrigerating compartment return air passage 9, and 15 is refrigerating compartment return air passage 12. Is a return port for a freezer, which is a heat insulating partition plate.

The cooling method of each room of the conventional refrigerator in which the refrigerating room 2, the freezing room 3 and the vegetable room 4 having the above-mentioned structure are formed in this order will be described below.

First, the cool air cooled by the cooler 5 is blown by the fan unit 7, a part of which is sent directly into the freezer compartment 3, and the sent cool air is returned from the freezer compartment return port 15 to the freezer compartment. The remaining cool air that has been returned to the cooler chamber 6 through the air passage 12 is sent from the refrigerating compartment discharge port 13 into the refrigerating compartment 2 through the refrigerating compartment discharge air passage 8 and further to the refrigerating compartment return port 14. Further, the cool air sent into the vegetable compartment 4 through the refrigerating compartment return air passage 9 is returned to the cooler compartment 6 through the vegetable compartment return air passage 10.

[0008]

However, in the above-mentioned conventional configuration, since the cold air is supplied to the vegetable compartment 4 through the refrigerating compartment 2, the refrigerating compartment must be provided with a considerably large air volume and speed on the side of the refrigerating compartment discharge air passage 8. Since the temperature of the air in the return air duct 9 is high, the temperature of the vegetable compartment 4 becomes higher than the target temperature in the summer, installation conditions, or when the doors are often opened and closed. There was a point.

The present invention solves the conventional problems.
It is an object of the present invention to provide a refrigerator that can constantly maintain the temperature inside the vegetable compartment in any environment throughout the four seasons.

[0010]

In order to achieve the above object, in the refrigerator of the present invention, the cool air cooled by the cooler for cooling the refrigerating room, the freezing room and the vegetable room is a fan device. It is designed to circulate individually in each room by, in the heat insulation cover that covers the shared damper device that controls the cold air supply to the refrigerating room discharge air passage and the cold air supply to the vegetable room discharge air passage, The cooling air on the refrigerating compartment side and the cooling air on the vegetable compartment side are separated by independent discharge air passages. That is, the cool air separated in the dedicated discharge air passage is configured to cool each room and then return to the cooler chamber via independent return air passages.

[0011]

The air to be returned from the refrigerating compartment to the cooler is once blown out from the refrigerating compartment return air duct into the vegetable compartment and then returned to the cooler through the vegetable compartment return duct, unlike the conventional refrigerator of the present invention. The cooling method is that some cool air is blown into the vegetable compartment through the dedicated vegetable compartment outlet duct in the heat insulating cover that covers the shared damper device for the refrigerator compartment outlet duct and the vegetable compartment outlet duct. The temperature in the vegetable compartment does not rise due to summer conditions or installation conditions, so the freshness is not impaired. Further, unlike the conventional example, the cooling cycle does not enter the continuous operation state under such conditions, so that the electricity cost of the refrigerator does not increase.

Further, since the discharge air passages for both the refrigerating compartment discharge air passage and the vegetable compartment discharge air passage are separated in the heat insulating cover which covers the shared damper device, the refrigerating compartment discharge air passage is separated from the vegetable compartment discharge air passage. A bypass for separating the discharge air passage is not required, and the discharge air passage for the vegetable compartment can be simplified.

Further, since the cool air supplied to the discharge air passage for the refrigerating compartment and the cool air supplied to the discharge air passage for the vegetable compartment are controlled by one damper device having a shared flap, the damper device can be simplified. Can be achieved.

[0014]

Embodiments of the refrigerator according to the present invention will be described below with reference to FIGS. The same components as those of the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

In FIGS. 1, 2, and 3, two heat-insulating partition plates 19 and 20 are installed in the heat insulating box body 18. The partition plates 19 and 20 allow the refrigerating chamber 21 to be installed from above. The freezer compartment 22 and the vegetable compartment 23 are divided. A cooler chamber 24 is provided at the back of the freezing chamber 22, and a fan device 25, a cooler 26, and a defrost heater 27 are arranged in this cooler chamber 24 in order from the top.
The cool air cooled by is circulated by the fan device 25.
The circulation route will be described below. A part of the cool air blown by the fan device 25 is sent directly into the freezer compartment 22 through the freezer compartment discharge port 28, and inside the cooler room 24 through the freezer compartment return port 29 as shown in FIGS. 2 and 3. Returned to. As shown in FIG. 4, the remaining cool air is guided to the discharge air passage 30 extending upward, and the damper chamber 32 of the heat insulating cover 31 disposed at the lower end of the back of the refrigerating chamber 21.
It is opened inside. The heat insulating cover 31 is made of, for example, foamed plastic and covers both the inlet portion of the refrigerating compartment discharge air passage 33 and the inlet portion of the vegetable compartment discharge air passage 34 attached to the heat insulating box 18 side. The damper device 36, which shares the flap 35 thus arranged, is covered so as to be housed in the damper chamber 32. The damper device 36 is controlled by two temperature sensors (not shown) that detect the temperatures inside the refrigerating compartment 21 and the vegetable compartment 23, respectively. When the open set temperature and the closed set temperature are detected, the opening operation is performed. And configured to perform a closing operation. First, the cool air sent to the refrigerating compartment 21 side will be described. The cool air sent to the refrigerating compartment 21 side is sent to the inside of the refrigerating compartment 21 through the refrigerating compartment discharge port 37, and the sent cool air is refrigerated. It is taken in through the room return port 38, is guided to the refrigerating room return air passage 39, and is then directly in the cooler room 2
Return to 4 On the other hand, the cool air sent to the vegetable room 23 side is guided to the vegetable room discharge air passage 34, sent to the inside of the vegetable room 23, and the cool air sent to the vegetable room 23 returns to the vegetable room return. After being guided from the mouth 40 to the return air passage 41 for the vegetable room, it returns to the cooler room 24. The refrigerating compartment return air passage 39 and the vegetable compartment discharge air passage 34 are insulated from each other by the partition plate 19 as shown in FIG.
The air passage is formed by a box body covered with the heat insulating wall 42 as shown in FIG. 5, and the box air passage is separated in the back wall of the freezer compartment 22 as shown in FIG. The refrigerating compartment return air passage 39 is connected to the cooler compartment 24, and the vegetable compartment discharge air passage 34 is connected to the vegetable compartment 23.

As described above, the refrigerator according to the present embodiment does not use the cold air after cooling the refrigerating compartment for cooling the vegetable compartment as in the conventional case, but separates the refrigerator compartment and the vegetable compartment separately. Since cold air is supplied, the temperature of the vegetable compartment does not rise even in the summer when the outside temperature rises, so there is no concern about the set temperature, and even in the winter when the outside temperature becomes low, the sensor controls to supercool it. To prevent the risk of becoming. Also, unlike the conventional case, the freshness of the vegetable compartment is not impaired and the electricity bill does not increase, and since the return cold air from the refrigerating room and the return cold air from the vegetable room have almost the same temperature distribution, Even if it is returned to the cooler independently, there is no risk of uneven frost formation on the cooler. Moreover, when the compressor is operated for a predetermined time, the defrosting heater at the bottom of the cooler is energized for defrosting, so that no frost remains in the cooler and there is no risk of impairing the cooling performance.

Since the flap 35 of the damper device 36 for controlling the cool air sent to the refrigerating compartment discharge air passage 33 and the vegetable compartment discharge air passage 34 is shared, the air passage structure can be simplified. Since it is not necessary to manufacture the damper device parts for the refrigerating compartment discharge air passage and the vegetable compartment discharge air passage as separate parts, an increase in the number of parts and an increase in the number of assembly steps can be prevented.

[0018]

As described above, according to the present invention, the cold air is supplied by providing the refrigerating compartment and the vegetable compartment with independent refrigerating compartment discharge air passages and vegetable compartment discharge air passages. There is no risk of the temperature of the vegetable compartment becoming too high in the summer, and the sensor controls even in the winter when the outside air temperature is low. Also has a constant temperature distribution in the refrigerator,
High-quality preserving can be performed and the electricity bill can be reduced.

Further, the damper device can be simplified by controlling the cool air in the discharge air passage for the refrigerating room and the cool air in the discharge air passage for the vegetable compartment with a damper device having a common flap, so that the parts cost can be reduced. Moreover, it is possible to simplify the steps in manufacturing the refrigerator.

[Brief description of drawings]

FIG. 1 is a perspective view showing a refrigerator door according to an embodiment of the present invention with a door removed.

FIG. 2 is a vertical cross-sectional view of a discharge air passage portion for a refrigerating room of the refrigerator.

FIG. 3 is a vertical sectional view of a discharge air passage portion for a vegetable compartment of the refrigerator.

FIG. 4 is a front view of the main part of the refrigerator.

FIG. 5 is a cross-sectional view of the return air passage for the refrigerator compartment and the discharge air passage for the vegetable compartment of the refrigerator.

FIG. 6 is a perspective view showing a conventional refrigerator without a door.

FIG. 7 is a vertical sectional view of the refrigerator.

[Explanation of symbols]

 18 Insulation Box Body 19, 20 Insulated Partition Plate 21 Refrigerator Room 22 Freezer Room 23 Vegetable Room 24 Cooler Room 25 Fan Device 33 Refrigerator Room Discharge Air Path 34 Vegetable Room Discharge Air Path 35 Flap 36 Damper Device 39 Refrigerator Room Return air passage 41 Return air passage for vegetable room

Claims (1)

[Claims] 1. A refrigerating compartment, a freezing compartment, and a vegetable compartment are formed in this order from the top by a partition plate that thermally insulates the inside of the heat insulating box, and the refrigerating compartment and the cooler compartment have a discharge air passage for the refrigerating compartment, And the return air passage for the refrigerating compartment, the vegetable compartment and the cooler compartment communicate with the vegetable compartment discharge air passage and the vegetable compartment return air duct, and control the supply of cold air to the refrigerating compartment discharge air duct A refrigerator provided with a damper device that shares a damper and a damper that controls the supply of cold air to the discharge air passage for the vegetable compartment.