JPH0989438A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a part of a vegetable chamber from being excessively cooled, and to prevent the inside of a vegetable container from being condensed. SOLUTION: A pre-cooling chamber 20 is formed by a gate 19 provided higher than a cold air discharge port 11A from a bottom surface 4b of a vegetable chamber 4 over the whole width of the vegetable chamber 4 between a back surface 17a of a vegetable container 17 and a rear surface 4a of the vegetable chamber 4 having the cold air discharge port 11a, the difference between the temperature of the cold air to be discharged from the cold air discharge port 11a and the temperature in the vegetable chamber 4 is reduced by the pre-cooling chamber 20, and then the cold air is extensively fed over the whole width of the vegetable chamber 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a vegetable compartment.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Laid-Open No. 3-267677, refrigerators have become large in size, and have many doors.

A conventional refrigerator as described above will be described below with reference to the drawings. FIG. 4 is a front perspective view of a refrigerator with a conventional door removed, FIG. 5 is a schematic vertical sectional view of the refrigerator, FIG. 6 is a transverse sectional view of the refrigerator, and FIG. 7 is a view showing a vegetable compartment of the conventional refrigerator. FIG.

In a conventional refrigerator, a refrigerating compartment 2, a freezing compartment 3 and a vegetable compartment 4 are formed from the inside in a heat insulating box 1, and a cooler compartment 6 in which a cooler 5 is arranged is formed on the rear surface of the freezing compartment 3. To do. Further, a machine room 8 for accommodating the compressor 7 forming a refrigeration cycle and the like is provided below the heat insulating box 1. And cooler 5
The cool air cooled by is blown directly to the freezing compartment 3 by the fan device 9 and is also blown to the refrigerating compartment 2 and the vegetable compartment 4 through the refrigerating compartment air duct 10 and the vegetable compartment air duct 11.

Then, the cool air sent into each of the chambers 2 to 4 is returned to the inside of the cooler chamber 6 through the dedicated return paths 12 to 14, respectively. Of these return paths 12 to 14, the refrigerating room return path 12 is formed from the upper heat insulating partition wall 15 to the right side wall of the heat insulating box 1 and the lower heat insulating partition wall 16, and the refrigerating room return path 12 has an outlet port. Are two freezer compartment return paths 1 provided with the outlet of the vegetable compartment return path 14 sandwiched in the center.
It is connected to the bottom of the cooler chamber 5 so as to be located further to the right of the outlet of No. 3.

A vegetable container 17 is provided in the vegetable compartment 4 in the front-rear direction so that cold air can flow around the vegetable compartment 17, and the cool air from the vegetable compartment air duct 11 directly flows into the vegetable container 17. The air guider 18 is provided on the rear surface of the vegetable compartment 4 so as to prevent the contents contained in the vegetable container 17 from freezing or dew condensation on the rear surface due to a partial low temperature. It is provided in the hollow near the part.

As described above, in the conventional refrigerator, the amount of cold air required for cooling the refrigerating room 2, the freezing room 3, and the vegetable room 4 can be independently blown.

[0008]

However, in the above configuration, the set temperature of about 6 ° C. and the vegetable compartment 4 need to be cooled much less than about 4 ° C. of the refrigerating compartment and about -18 ° C. of the freezing compartment. Since there is no air flow, the cool air from the cooler 5 (about -25
In order to cool it to a predetermined temperature in (° C), the air volume thereof may be very small.

Therefore, a dedicated damper device is provided to control the vegetable compartment air supply passage 11 and the vegetable compartment return passage 14 so as to narrow the instantaneous air volume, or to control the vegetable compartment 4 during the cooling time. The need arises.

However, if the air flow rate is controlled instantaneously, the temperature distribution in the vegetable compartment 4 tends to deteriorate, and if controlled in time, a portion of the vegetable compartment 4 is momentarily overcooled, and the temperature of the vegetable compartment 4 fluctuates over time. growing.

Further, in the air guider 18, it is difficult to obtain sufficient heat insulation performance, and positioning is difficult. In any case, there is a problem that a part of the vegetable container 17 is likely to be condensed and a part of the stored object is easily frozen.

The present invention has been made in view of the above problems, and provides a refrigerator in which a part of a vegetable compartment is not overcooled and a container is not condensed.

[0013]

In order to achieve the above object, the refrigerator according to the present invention has a bottom surface of the vegetable compartment over the entire width of the vegetable compartment between the rear surface of the vegetable container and the rear surface of the vegetable compartment having the cool air discharge port. Therefore, the weir provided above the cold air discharge port was provided.

Further, a hole is provided between the top surface of the vegetable compartment and the bottom surface of the vegetable compartment over the entire width of the vegetable compartment between the rear surface of the vegetable container and the rear surface of the vegetable compartment having the cold air outlet. It was equipped with a weir.

[0015]

According to the present invention, the precooling chamber is formed by the weir provided between the rear surface of the vegetable container and the rear surface of the vegetable chamber having the cold air discharge port, the weir being provided over the entire width of the vegetable chamber from the bottom surface of the vegetable chamber above the cold air discharge port. However, since the temperature difference between the cold air discharged from the cold air discharge port and the vegetable compartment is reduced in this warning room and then supplied widely over the entire width of the vegetable room, it is not necessary to attach an air guider that is difficult to position in the hollow, It is possible to prevent a part of the vegetables from being overcooled or the vegetable container from being condensed.

Further, a hole is provided between the rear surface of the vegetable container and the rear surface of the vegetable compartment having the cold air outlet, extending from the top surface of the vegetable compartment to the bottom surface of the vegetable compartment over the entire width of the vegetable compartment. Since the pre-cooling chamber is formed by the weir, and the temperature difference between the cold air discharged from the cold air discharge port and the vegetable chamber is reduced in this warning chamber, the air is supplied from the hole of the weir. There is no need, and it is possible to prevent a part of the vegetable compartment from being overcooled and the vegetable container from being condensed.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 1 and 2, but the same components as those in the prior art will be designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 1 is a longitudinal sectional view of the essential parts showing a vegetable compartment of a refrigerator according to the first embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the refrigerator according to the same embodiment.

In the figure, reference numeral 19 indicates the entire width of the vegetable compartment 4 between the rear surface 17a of the vegetable compartment 17 and the rear surface 4a of the vegetable compartment 4 of the vegetable compartment air passage 11 having the cool air outlet 11a. Is a plate-like weir provided higher than the cold air discharge port 11a from the bottom surface 4b of the cold air discharged from the cold air discharge port 11a of the vegetable room air duct 11 by directly sealing the side surface and the bottom surface of the weir. It does not enter the vegetable container 17 side space of the chamber 4.

Reference numeral 20 is a pre-cooling chamber for retaining cold air formed by the weir 19 between the weir 19 and the rear surface 4a of the vegetable compartment 4. The pre-cooling chamber 20 is located above the machine room 8 and easily absorbs heat from the machine room 8 having a relatively high temperature (40 ° C.) through the heat insulating wall. Therefore, since the cold air discharged into the pre-warning chamber 20 is initially near the temperature of the cooler 5 (about -20 to -25 ° C), it is lower than about 0 ° C of the ambient temperature of the pre-cooling chamber 20, so that it is heavy below. It is stopped by the down weir 19,
At this time, the temperature rises due to heat absorption and becomes lighter, and the weir 19
Over and over into the vegetable compartment 4 (the space on the vegetable container 17 side of the vegetable compartment 4).

As described above, in this embodiment, the vegetable container 17
The pre-cooling chamber 20 is provided by the weir 19 which is provided higher than the cold air discharge port 11a from the bottom surface 4b of the vegetable chamber 4 over the entire width of the vegetable chamber 4 between the back surface 17a of the vegetable compartment 4 and the rear surface 4a of the vegetable chamber 4 having the cold air discharge port 11a. Since the temperature difference between the cold air discharged from the cold air discharge port 11a and the vegetable compartment 4 is made small in the prediction chamber 20 and then widely supplied over the entire width of the vegetable compartment 4,
There is no need to attach an air guider that is difficult to position in the hollow, and part of the vegetable compartment 4 becomes overcooled, and the vegetable container 17
It is possible to prevent dew condensation.

Next, the second embodiment of the present invention will be described with reference to FIG.
However, the same components as those of the related art will be designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 3 is a longitudinal sectional view of the essential parts showing a vegetable compartment of a refrigerator according to the second embodiment of the present invention. In the figure, reference numeral 21 is a lower heat insulating partition wall that partitions the freezer compartment 3 and the vegetable compartment 4 and forms a top surface 21a of the vegetable compartment 4 on the lower surface.

Reference numeral 22 denotes the entire space of the vegetable compartment 4 between the rear surface 17a of the vegetable compartment 17 and the rear surface 4a of the vegetable compartment 4 having the cold air outlet 11a.
Is a plate-like weir having a plurality of holes 22a provided at a position higher than the cold air discharge port 11a over the entire width of the vegetable compartment 4, and the weir 22 is integrally formed on the lower surface of the lower heat insulating partition wall 21. . 22b is a seal member provided at the lower end of the weir 22 and having elasticity to fill a gap with the bottom surface 4b of the vegetable compartment 4. The weir 22 is preferably made of a material having good thermal conductivity. The holes 22a may be long holes that are long in the width direction of the vegetable compartment 4.

Reference numeral 23 is a precooling chamber for retaining cold air formed by the weir 22 between the weir 22 and the rear surface 4a of the vegetable compartment 4. The pre-cooling chamber 23 is located above the machine room 8,
From the machine room 8 having a relatively high temperature (40 ° C.), it is easy to absorb heat through the heat insulating wall. Therefore, since the cold air discharged into the pre-warning chamber 23 is initially near the temperature of the cooler 5 (about -20 to -25 ° C), it is lower than about 0 ° C of the ambient temperature of the pre-cooling chamber 23, so that it is heavy below Although it is stopped by the falling weir 22, the temperature rises due to heat absorption at this time, the temperature becomes lighter, and the light exits from the plurality of holes 22a to the vegetable chamber 4 (the space on the vegetable container 17 side of the vegetable chamber 4).

As described above, in this embodiment, the vegetable container 17
Between the top surface 21a of the vegetable compartment 4 and the bottom surface 4b of the vegetable compartment 4 over the entire width of the vegetable compartment 4 between the rear surface 17a of the vegetable compartment 4 and the rear surface 4a of the vegetable compartment 4 with the cold air outlet 11a. The precooling chamber 23 is formed by the weir 22 having a plurality of holes 22a over the entire width of the vegetable chamber 4,
Since the temperature difference between the cold air discharged from the cold air discharge port 11a and the vegetable compartment 4 is reduced in the warning chamber 23 and then supplied from the plurality of holes 22a of the weir 22, there is no need to attach an air guider which is difficult to position in the hollow. It is possible to prevent a part of the vegetable compartment 4 from being overcooled and the vegetable container 17 from being condensed.

In the present invention, even in a so-called top freezer type refrigerator in which a freezing compartment is provided in the upper stage, a refrigerating compartment is provided in the middle stage, and a vegetable compartment is provided in the lower stage, the cold air for cooling the vegetable compartment is directly fed to the vegetable compartment. It is obvious that it can also be applied to a refrigerator of the type that supplies to No.

[0028]

INDUSTRIAL APPLICABILITY As described above, the refrigerator of the present invention is provided between the rear surface of the vegetable container and the rear surface of the vegetable compartment having the cold air outlet over the entire width of the vegetable compartment and higher than the cold air outlet from the bottom of the vegetable compartment. The weir creates a pre-cooling chamber, and the temperature difference between the cold air discharged from the cool air outlet and the vegetable chamber is reduced in this warning chamber, and then it is supplied widely over the entire width of the vegetable chamber. Therefore, it is possible to prevent the vegetable compartment from being overcooled and the vegetable container from being condensed.

In addition, between the rear surface of the vegetable container and the rear surface of the vegetable compartment having the cold air outlet, a hole is provided over the entire width of the vegetable compartment from the top surface of the vegetable compartment to the bottom of the vegetable compartment, at a position higher than the cold air outlet. Since the pre-cooling chamber is formed by the weir, and the temperature difference between the cold air discharged from the cold air discharge port and the vegetable chamber is reduced in this warning chamber, the air is supplied from the hole of the weir. There is no need, and it is possible to prevent a part of the vegetable compartment from being overcooled and the vegetable container from being condensed.

[Brief description of drawings]

FIG. 1 is a longitudinal cross-sectional view of a main part showing a vegetable compartment of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the refrigerator of the embodiment.

FIG. 3 is a vertical cross-sectional view of a main part showing a vegetable compartment of a refrigerator according to a second embodiment of the present invention.

FIG. 4 is a front perspective view of a refrigerator with a conventional door removed.

FIG. 5 is a schematic vertical sectional view of the refrigerator.

FIG. 6 is a cross-sectional view of the refrigerator.

FIG. 7 is a vertical cross-sectional view of a main part showing a vegetable compartment of a conventional refrigerator.

[Explanation of symbols]

 4 Vegetable room 11a Cold air discharge port 17 Vegetable container 19,22 Weir 20,23 Pre-cooling room 22a Hole

Claims (2)

[Claims] 1. A vegetable compartment having a cool air discharge port on a rear surface thereof, a vegetable container provided in the vegetable compartment so that cold air flows around the vegetable compartment, and the vegetable compartment between the rear surface of the vegetable container and the rear surface of the vegetable compartment. A refrigerator provided with a weir provided over the entire width of the vegetable compartment from the bottom surface of the vegetable compartment to a position higher than the cold air discharge port. 2. A vegetable compartment having a cool air discharge port on a rear surface thereof, a vegetable container provided in the vegetable compartment so that cold air flows around the vegetable compartment, and the vegetable compartment between the rear surface of the vegetable container and the rear surface of the vegetable compartment. A refrigerator provided with a weir provided over the entire width of the vegetable compartment from the top surface of the vegetable compartment to the bottom surface of the vegetable compartment and having a hole at a position higher than the cold air discharge port.