JPH08178509A - Cold-storage refrierator - Google Patents

Abstract

PURPOSE: To provide a cold-storage refrigerator, improvde to be mode compact by a method wherein a duct, buried into a heat insulating material, is improved so as to be thin and provided with sufficient strength. CONSTITUTION: A cold air supplying passage for a cold-storage chamber, which supplies cold air from a cooler 12 arranged in a cooling chamber 14 formed behind a refrigerating chamber 6 to the coil-storage chamber, is formed behind the cold-storage chamber while cold air from a cooler 12 is supplied to the cold air supplying passage for the cold-storage chamber through a cold air distributing member, having heat insulating property and provided below the cold-storage chamber. Further, a cold air supplying passage, supplying a part of cold air into a vegetable chamber, is formed in the cold air distributing member and a cold air supplying passage 26 for a vegetable chamber is provided in a heat insulating material behind the refrigerating chamber 6 to suck the cold air, obtained after circulating the cold-storage chamber by the cold air supplying passage 26 for the vegetable chamber, and the cold air, coming directly from the cold air supplying passage, and supply them into the vegetable chamber. A duct 26A, which forms the cold air supplying passage 26 for the vegetable chamber, is formed of a foamed resin, having a low magnifying power of foaming, so as to obtain a thin type structure and sufficient property of strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator / freezer, and more particularly to an air passage device for blowing cold air from a cooler to a storage chamber.

[0002]

2. Description of the Related Art In a recent refrigerator-freezer, the inside of the main body is not divided into a freezer compartment, a refrigerator compartment and a vegetable compartment from the top as in the conventional case, but in consideration of the frequency of use, the refrigerator compartment and the refrigerator compartment are arranged in order from the top. There is also one in which the vegetable compartment is formed by a partition wall.

In such a refrigerator-freezer, a cooling chamber is formed at the back of the freezing chamber, and cold air from a cooler arranged in this cooling chamber is refrigerated by a cold air duct provided behind the refrigerating chamber. While supplying the cold air from the cooler, the cold air from the cooler is also distributed and supplied to the ice greenhouse formed in the lower part of the vegetable compartment and the refrigerating compartment by the cold air distributing member provided behind the cooling compartment. .

Here, cold air is supplied to the vegetable compartment by a cold air passage for the vegetable compartment formed behind the freezing compartment so as to communicate with the cold air distributing member, and the cold air passage for the vegetable compartment is supplied to the cold compartment. It is constructed so that cold air that has passed through the refrigerating room and the ice greenhouse is also sucked in and passed through, and after introducing the cool air into the vegetable room, the cool air circulates back to the cooling room to cool each room. ing. An example of a refrigerator-freezer having such a structure is disclosed in Japanese Patent Laid-Open No. 4-288466.

The cold air passage for the vegetable compartment, which communicates with the cold air distribution member, extends long enough to vertically penetrate the freezing compartment between the refrigerator compartment and the vegetable compartment, and connects the upper refrigerator compartment and the lower vegetable compartment. As described above, the duct is embedded in the wall portion of the freezer compartment filled with the foamed heat insulating material. Conventionally, as the cold air passage for the vegetable compartment, for example, a duct using a resin pipe having a thickness of about 3 mm or a duct formed of foamed resin such as styrofoam material has been adopted.

[0006]

Here, the former resin pipe has sufficient strength to withstand the pressure at the time of foaming of the heat insulating material (foaming pressure reaches 1 ton / square meter),
Since it is a resin such as vinyl chloride and has a relatively thin thickness of 3 mm, it does not have sufficient heat insulation properties. If it is installed near the cooling chamber, the temperature of the cold air passing through the pipe and the temperature of the cooling chamber Condensation occurs on the inner surface of the resin pipe due to the temperature difference. Therefore, a heater is added to prevent dew condensation, and the heat insulation is not good, but the cost is high.

On the other hand, in the latter case of the foamed resin duct, it is generally formed of styrene foam having a foaming ratio of 30 times,
It is light and has good heat insulation. However, since the expansion ratio is high, the density is low and the strength is weak.Therefore, when the foamed resin duct is embedded in the heat insulating material that constitutes the wall of the freezer compartment, the duct is deformed by the pressure of the heat insulating material during foaming. Since it is reinforced by some kind of reinforcing material such as covering the duct with a resin cover so as not to be crushed, the number of parts and the number of assembling steps are increased, so that there is a problem that productivity is not improved.

The present invention has been made in view of the above points,
To provide a freezer-refrigerator that can achieve compactness by reducing the number of parts and assembling man-hours by making the duct resistant to foaming pressure without a reinforcing material. The purpose is.

It is another object of the present invention to provide a duct improved so that the duct, which is composed of two or more parts, can be integrated into one part and the strength can be improved.

Furthermore, in a freezer-refrigerator of the type that has a freezer compartment provided with a cooler in the center and has a refrigerator compartment and a vegetable compartment above and below it, a sufficient amount of cold air is supplied from the freezer compartment to the vegetable compartment. It can be supplied and the duct strength is improved,
Another object of the present invention is to provide a vegetable compartment duct in which a heater for preventing dew condensation on the inner surface of the duct can be eliminated.

It is an object of the present invention to provide a vegetable compartment duct having a structure in which the interior of the vegetable compartment duct has multiple flow paths to guide cool air having different temperatures to suppress dew condensation. Is.

[0012] Further, in the duct arrangement in which the low temperature cold air passage of the multi-channel structure vegetable duct faces the freezing compartment,
An object of the present invention is to provide a vegetable compartment duct capable of preventing dew condensation on the inner surface of the duct.

Furthermore, the duct arrangement for the vegetable compartment, which has a multi-channel duct for the vegetable compartment, faces the cooler side in the freezer compartment facing the cooler air passage of the low temperature, thereby making it possible to prevent condensation on the inner surface of the duct. It is intended to provide a duct.

[0014]

According to a first aspect of the present invention, there is provided a main body of a heat insulating structure having a front opening filled with foam insulation between the inner and outer boxes, and a cold air duct embedded in the foam insulation to guide cool air. In the refrigerator-freezer provided with, the cold air duct is formed of a foamed resin having a low expansion ratio.

According to a second aspect of the present invention, there is provided a refrigerating refrigerator provided with a main body of a heat insulating structure having a front opening filled with foam insulation between the inner and outer boxes, and a cold air duct embedded in the foam insulation to guide cool air. The refrigerating refrigerator is characterized in that the cold air duct is formed of a foamed resin having a low expansion ratio and has a plurality of divided cold air passages.

According to a third aspect of the present invention, the inside of the main body of the heat insulating structure having the front opening is partitioned by a partition wall into a refrigerating room, a freezing room and a vegetable room in order from the top, and is formed in the back of the freezing room. A cooler arranged in the cooling chamber, an adiabatic cold air distribution member that projects inward of the lower portion of the refrigerating chamber and distributes cool air from the cooler, and is formed behind the refrigerating chamber. A cold room cold air supply path for supplying cold air from the cold air distribution member to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room for supplying cold air to the vegetable room were provided. In the refrigerator-freezer, the cold air duct is formed of a foamed resin having a low expansion ratio.

According to a fourth aspect of the present invention, the inside of the main body of the heat insulating structure having the front opening is partitioned by a partition wall into a refrigerating room, a freezing room and a vegetable room in order from the top, and is formed in the back of the freezing room. A cooler arranged in the cooling chamber, an adiabatic cold air distribution member that projects inward of the lower portion of the refrigerating chamber and distributes cool air from the cooler, and is formed behind the refrigerating chamber. A cold room cold air supply path for supplying cold air from the cold air distribution member to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room for supplying cold air to the vegetable room were provided. In the freezer-refrigerator, the cold air duct has two cold air passages through which the cool air that has passed through the refrigerating chamber and the cool air that is distributed by the cool air distribution material pass separately, and is formed of foamed resin. It is a refrigerator.

According to a fifth aspect of the present invention, the inside of the main body of the heat insulating structure having the front opening is partitioned by a partition wall into a refrigerating room, a freezing room and a vegetable room in order from the top, and is formed in the back of the freezing room. A cooler arranged in the cooling chamber, an adiabatic cold air distribution member that projects inward of the lower portion of the refrigerating chamber and distributes cool air from the cooler, and is formed behind the refrigerating chamber. A cold room cold air supply path for supplying cold air from the cold air distribution member to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room for supplying cold air to the vegetable room were provided. In the freezer-refrigerator, the cold air duct has two cold air passages through which the cool air passing through the refrigerating chamber and the cool air distributed by the cool air distribution material pass separately, and is formed of a foamed resin having a low expansion ratio, and the cold air distribution material is provided. The cold air passage through which the cold air distributed in A refrigerator, characterized in that arranged so as to face the.

According to a sixth aspect of the present invention, the inside of the main body of the heat insulating structure having the front opening is partitioned by a partition wall into a refrigerating compartment, a freezing compartment and a vegetable compartment in order from the top, and is formed behind the freezing compartment. A cooler arranged in the cooling chamber, an adiabatic cold air distribution member that projects inward of the lower portion of the refrigerating chamber and distributes cool air from the cooler, and is formed behind the refrigerating chamber. A cold room cold air supply path for supplying cold air from the cold air distribution member to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room for supplying cold air to the vegetable room were provided. In the freezer-refrigerator, the cold air duct has two cold air passages through which the cool air passing through the refrigerating chamber and the cool air distributed by the cool air distribution material pass separately, and is formed of a foamed resin having a low expansion ratio, and the cold air distribution material is provided. The cold air passage through which the cold air distributed in A refrigerator, characterized in that arranged so as to face the.

[0020]

In the invention of claim 1, since the cold air duct is formed of the foamed resin having a low expansion ratio, the density can be increased and the strength can be improved, so that the duct can be made thin and compact. it can.

According to the second aspect of the present invention, the cold air that has passed through the refrigerating compartment and the direct cool air from the cold air supply passage are sucked into the vegetable compartment by the cold air supply passage and the cold air supply passage for the vegetable compartment is provided. The duct to be formed is molded so as to have the cold air after passing through the refrigerating chamber by the foamed resin and the two divided cold air passages through which the cool air directly passes, and two types of cold air having different temperatures are introduced to separate cold air passages. , To improve the strength.

According to the third aspect of the present invention, the cold air duct provided inside the heat insulating material at the back of the freezer is formed of foamed resin having a low expansion ratio, so that the resin density is increased and
Even if the thickness is thin, it is possible to secure the same heat insulating property as that of styrofoam, so that the cold air duct can be downsized.

According to the invention of claim 4, since the cold air duct has two cold air passages, the cold air distributed by the cold air distribution member is separately guided to the vegetable room, and even when the distributed cold air is reduced, the vegetable room is reduced. The flow of cold air to the room is secured, and the lack of cooling in the vegetable compartment can be eliminated.

According to the fifth aspect of the invention, since the cold air duct has two cold air passages, the cold air distributed by the cold air distribution member is individually guided to the vegetable room, and even when the distributed cold air is reduced, the vegetable room is reduced. The flow of cold air to the room is secured, and the lack of cooling in the vegetable compartment can be eliminated. Further, the cold air duct can be downsized and the number of parts can be reduced, and the cold air passage through which the cold air having a slightly elevated temperature passes is distributed by the cold air distribution member.
The cold air passage through which cold air with a low temperature passes keeps the distance from the coldest freezer compartment in the storage room and is isolated, so that the temperature difference from the freezer compartment increases according to the distance from the freezer compartment. It becomes a relationship.

According to the invention of claim 6, since the cold air duct has two cold air passages, the cold air distributed by the cold air distribution member is separately guided to the vegetable room, and even when the distributed cold air is reduced, the vegetable room is reduced. The flow of cold air to the room is secured, and the lack of cooling in the vegetable compartment can be eliminated. Further, the cold air duct can be downsized and the number of parts can be reduced, and the cold air passage through which the cold air having a slightly elevated temperature passes is distributed by the cold air distribution member.
The cold air passage through which cold air with a low temperature passes keeps the distance from the coldest cooling chamber in the storage chamber and is isolated, so that the temperature difference with the cooling chamber increases according to the distance from the cooling chamber. It becomes a relationship.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of the body of a refrigerator-freezer according to an embodiment of the present invention, and FIG. 2 is a side sectional view thereof.

In FIGS. 1 and 2, reference numeral 1 denotes a main body having a heat insulating structure (hereinafter referred to as a main body). The main body 1 is filled with a foamed heat insulating material 4 between an inner box 2 and an outer box 3 whose front faces are opened. Are formed. Further, inside the main body 1, a refrigerating room 5, a freezing room 6 and a vegetable room 7 are partitioned by a partition wall 8 in order from the top. In addition, 9 is a heat insulation door provided so as to open and close the refrigerating compartment 5, 10 is a drawer also serving as a heat insulation door provided in the freezing compartment 6 and the vegetable compartment 7, and 11 is a shelf.

By the way, a cooling chamber 14 in which a cooler 12 and a fan 13 for circulating cold air are arranged at the back of the freezing chamber 6
Is formed, and at the lower part of the refrigerating compartment 5, an insulating shelf 11 is formed.
An ice greenhouse 15 defined in a is provided.

A cold air duct 16 is provided at the back of the refrigerating compartment 5. Here, this cold air duct 16
The cold air from the cooler 12 as shown in FIG.
It is for forming the cold air passage 18 for the refrigerating room, which is blown out from the main cold air blowing hole 17 provided in the upper part of the.

In the figure, reference numerals 18a and 18b denote a cold air outward path and a cold air return path, which are formed in the cold air passage 18 for the refrigerating compartment by the ribs 16a. After the cool air from the cooler 12 is supplied to the cold air duct 16. , Cold air passage 18 for cold room
The air is blown out from the main cold air blowing hole 17 through the cold air outward path 18a formed at the center of the.

A portion of the cold air passes through the upper ends of the ribs 16a without going to the main cold air outlet 17 as shown by the arrow A of the broken line, and then the cold air return path 18b branched from the upper part of the cold air outward path 18a. It is adapted to be blown into the refrigerating compartment 5 through a shelf cold air blowout hole 17a which is formed at a position where it enters and faces the shelf 11. In this way, the cold air is supplied not only from the main cold air outlet 17 but also from the shelf cold air outlet 17a to the refrigerating chamber 5.
It is possible to evenly cool the refrigerating chamber 5 by blowing it out.

On the other hand, as shown in FIG. 2, a mechanical damper (hereinafter referred to as a damper) 21 is disposed between the ice greenhouse 15 and the inner box 2 and communicates with the cold air passage 18 for the refrigerating compartment. A damper chamber 22 is provided. Here, the damper chamber 22 is formed by a cold air distribution member 23 having heat insulating properties formed of styrofoam or the like, and the ice greenhouse 15 is formed by bringing the rear end of the shelf 11a into contact with the cold air distribution member 23. It is supposed to be done.

The cold air distribution member 23 is provided in the cold air duct 16
The cold air passage 19 for the vegetable compartment, which is provided in the lower back of the refrigerating compartment 5 so as to communicate with the refrigerator 12 and the cold compartment 5 for supplying the cool air to the vegetable compartment 7, and the ice greenhouse 15. A cold air passage 20 for the ice greenhouse is formed.

In the lower part of the cold air distribution member 23,
A communication passage 24 that is a communication portion that communicates with the cooling chamber 14 and the damper chamber 22 is formed, and the cool air from the cooler 12 is blown by the blower 13 through the communication passage 24.
It is supposed to be supplied to 2. The damper 21 is arranged in the opening of the communication passage 24 on the damper chamber 22 side.

By the way, this damper 21 is used for the refrigerator compartment 5.
The operation is controlled so as to change the opening degree according to the temperature of the cold air. When the opening degree of the damper 21 is small, the amount of cold air supplied to the cold air duct 16 via the damper chamber 22 becomes small. . When the amount of cold air decreases in this way, the flow velocity for rising also decreases, and it becomes difficult to reach the cold air return passage 18b, and most of the cool air is blown out from the cold air passage 19 for the vegetable compartment and the cold air passage 20 for the ice greenhouse. As a result, the cold air supplied to the cold air passage 18 for the refrigerating room hardly reaches or does not reach the main cold air outlet 17.

Reference numeral 25 denotes a main cold air blow hole of the cold air passage 18 for the refrigerating compartment so that the cool air can be blown into the refrigerating compartment 5 even when the degree of opening of the damper 21 is small and the cool air does not easily reach the main cold air vent 17. It is an auxiliary cold air blowout hole provided on the way to 17.

By the way, reference numeral 26 shown in FIG. 1 denotes a cold air supply passage for the vegetable compartment for supplying cold air to the vegetable compartment 7. The cold air supply passage 26 for the vegetable compartment is provided with the cold air passage 19 for the vegetable compartment. The cold air after passing through the refrigerating room 5 and the ice greenhouse 15 is sucked in. The cold air supply passage 26 for the vegetable compartment is formed by embedding a resin duct 26A shown in FIG. 5 in the heat insulating material on the rear wall of the freezing compartment as shown in FIG. In this case, duct 2
6A is a predetermined place between an inner box and an outer box forming a freezer,
That is, it is arranged at a position juxtaposed with a cooling chamber in which a cooler is provided, and is integrally formed by filling a foamed polyurethane foam (hereinafter referred to as urethane) of a foamed heat insulating material.

Here, the duct 26A is formed of a foamed resin. In this case, the duct 26A is formed of a foamed resin having a foaming ratio of about 2 to 5 times lower than that of a conventional styrene resin having a foaming ratio of 30 times. It has become a thing. When the duct 26A is formed from such a resin having a low expansion ratio, the resin density becomes high and the strength is increased, so that the duct 26A having a required heat insulating property can be formed with a thickness smaller than that of the conventional expanded polystyrene. become.

Therefore, since the conventional duct 26A was formed of the styrofoam resin having a foaming ratio of 30 times, the thickness was considerably increased. However, the resin duct 26A of the present invention has the same degree of thickness. Since the heat insulation can be achieved by the thin duct 26A, a resin cover for reinforcement can be eliminated as in the conventional case, and since the heat insulation is sufficient, a heater for preventing dew condensation is not required and the number of parts can be reduced. The number of ducts can be reduced and the assemblability can be improved, and the size of the duct can be reduced. For example, as an example of the dimensions of the duct 26A, the duct 26A having a thickness of about 5 mm can be adopted, and the duct 26A can be made thin as a resin pipe having a thickness of 3 mm.

By the way, in the duct 26A, as described above, the cooler after passing through the refrigerating room 5 and the ice greenhouse 15 and the cold air passage 19 for the vegetable room of the cold air distributing member 23 are provided.
Although the direct cold air from 2 flows, the temperature of the former cold air that has passed through the refrigerating room 5 and the ice greenhouse 15 is higher than that of the latter direct cold air, and cold air of such different temperature is mixed to the vegetable compartment 7. If supplied, cooling efficiency will drop, so duct 26B
As shown in FIG. 7, a cold air passage 31B through which cold air after passing through the refrigerating chamber 5 and the ice greenhouse 15 and a cold air passage 32B through which cold air from the cooler 12 passes through the cold air passage 19 for the vegetable compartment are inside. Assuming that the duct 26B has a structure formed by dividing into
A low temperature cold airflow can be sent to the vegetable compartment 7, and the vegetable compartment 7 can be efficiently cooled. Moreover, even when the cold air is squeezed by the damper 21 and the amount of cold air tends to be insufficient, colder air of lower temperature can be supplied to the vegetable compartment 7, and the insufficient cooling of the vegetable compartment 7 can be eliminated.

Then, the plurality of cold air passages 31B, 32
The duct 26B having a structure having B can also be easily formed by extrusion molding of foamed resin or the like. When the duct 26B having this structure is used, as shown in FIG. 8, the cold air passage 32B through which cold air having a low temperature passes is arranged so as to face the freezer compartment. In this way, it is possible to suppress the thermal conductivity from the low-temperature freezing compartment 6 to the cold air passage 31B through which cold air having a high temperature passes, and the duct 26 is cooled by the cold air passing through the cold air passage 31B.
Condensation on the inner surface of B can be prevented.

In addition, the duct 26 in the direction shown in FIG.
When C is arranged, the cool air passage 32C through which cool air having a low temperature passes is installed on the side facing the cooler 12. Also in this case, it is possible to suppress the thermal conductivity from the cooler 12 having a low temperature to the cold air passage 31C through which cold air having a high temperature passes, and similarly, it is possible to prevent dew condensation on the inner surface of the cold air passage 31C and to eliminate the heater.

In FIG. 2, reference numeral 27 denotes the cooling air supplied to the vegetable compartment 7 from the vegetable compartment cold air supply passage 26.
This is the cold air return path for the vegetable room. In addition, in FIG.
28 is formed on the front surface of the cold air distribution member 23, and
It is a cold air blowout hole for blowing cold air into.

Next, the refrigerating room cooling operation of the freezer-refrigerator thus constructed will be described.

Normally, the cool air cooled by the cooler 12 is supplied to the cool air duct 16 through the communication passage 24 of the cool air distribution member 23 and the damper chamber 22 by the blower 13, and then passes through the cold air passage 18 for the refrigerating chamber. It is blown into the refrigerating chamber 5 through the main cold air outlet 17 and the shelf cold air outlet 17a shown in FIG.
A part of the cool air cooled by the cooler 12 passes through the cold air passage 23 for the ice greenhouse to the ice greenhouse 15 from the cold air outlet 24 formed in the cold air distribution member 23, and from the cold air passage 19 for the vegetable compartment. The cold air supply passage 26 for the vegetable compartment is directly blown out.

On the other hand, to the vegetable compartment 7, the duct 26A shown in FIG.
In the case of, both the cold air that has passed through the refrigerating compartment 5 and the ice greenhouse 15 and the direct cool air that has been cooled by the cooler 12 are both supplied through the cold air supply passage 26 for the vegetable compartment, and then the cold air return path for the vegetable compartment. Two
Returning to the cooling chamber 14 by 7.

In the case of the duct 26B shown in FIG. 7, the cool air after passing through the cold air passage 31B through the refrigerating chamber 5 and the ice greenhouse 15 and the direct air from the cooler 12 through the cold air passage 32B. The cold air, which is supplied to the vegetable compartment 7 through the separate passages and has cooled the vegetable compartment 7, returns to the cooling compartment 14 through the vegetable compartment cold air return path 27. In this way, the cool air is reliably supplied to the vegetable compartment 7 by the duct 26B formed of a resin having a low expansion ratio and having a small thickness, and the heat insulation is high, so that the inner surface of the duct 26B does not have dew condensation, and the cool air is smooth. Can be flushed.

In the above description, the duct 2
6A, 26B and 26C are ducts 26A, 26B and 26
Although it has been described that the two passages are formed by partitioning the central portion of C, the present invention is not limited to this, and may be partitioned into L-shapes as shown in FIG. Further, in the figure, a cold air passage 32D through which cold air with a low temperature passes is facing the freezer compartment side or the cooler 12 side, and cold air with a high temperature passes through a cold air passage 31D. Therefore, the cold air passage 31D is distant from the cooler 12 and the freezer compartment 6 in distance, so that the heat conduction is low and dew condensation on the inner surface of the cold air passage 31D can be prevented.

Further, as shown in FIG. 11, if the duct 26F has multiple flow paths and the duct 26F is arranged so that the cool air passage through which cool air having a high temperature passes is separated from the room having a low temperature, the cool air having a high temperature is generated. Condensation on the passing cold air passage can be suppressed and prevented, and heaters can be reduced or eliminated.

In the figure, 32F is the lowest cold air passage through which the cool air from the cooler directly passes, faces the cooler with the lowest temperature, and the cool air from the ice greenhouse which is higher than the direct cool air. Passes through the cold air passage 32G, and the cold air passage 32G faces the freezer compartment side, which has a temperature slightly higher than that of the cooler. Further, since the coolest air having the highest temperature passes through the cool air passage 31F and is the farthest from the cooler and the freezer compartment, the heat conduction is low, and the dew condensation on the inner surface of the cool air passage 31F can be prevented.

[0052]

As described above, according to the invention of claim 1,
By forming the duct that constitutes the cold air supply passage for the vegetable compartment embedded in the heat insulating material of the freezer compartment from a resin with a low expansion ratio, it is possible to make the duct thin and strong. As described above, the work of reinforcing the duct with the reinforcing plate so as not to be deformed by the heat insulating material that foams is omitted, and the manufacturing is facilitated. In addition, even if the thickness is thin, since it is a resin duct with a low-density structure, it has sufficient heat insulation, so the cold air passing through the duct is not affected by the freezer compartment and the cooler, and it does not condense the cold air and can be reliably made. It can be supplied to the vegetable compartment, and a heater for preventing dew condensation can be eliminated.

According to the second aspect of the present invention, a plurality of divided cold air passages are formed in the duct, and high temperature cold air that passes through the refrigerating chamber and the ice greenhouse and direct cool air that is low in temperature from the cooler are provided. By separately supplying and supplying the vegetables to the vegetable compartment, the vegetable compartment can be efficiently cooled. In that case, the cold air passage, through which cold air having a low temperature passes, as in the invention of claim 3,
By facing the freezing compartment, it is possible to easily achieve dew condensation prevention in the cold air passage through which cold air having a high temperature passes.

According to the invention of claim 4, even in the case where the duct having a plurality of partitioned cool air passages is arranged in parallel in the cooling chamber in which the cooler is arranged, the cool air passage having a low temperature is provided in the cooler. By facing the surface, it becomes possible to easily prevent dew condensation in the cold air passage through which cold air having a high temperature passes.

According to the invention of claim 5, the cool air duct is two.
Since it has two cold air passages, the cold air distributed by the cold air distribution member is individually guided to the vegetable compartments, and even when the distributed cold air decreases, the cold air flow rate to the vegetable compartments is secured, and there is insufficient cooling of the vegetable compartments. I can lose it. In addition, the cold air duct can be downsized and the number of parts can be reduced, and the cold air passage through which cold air with a slightly elevated temperature passes through is distributed by the cold air distribution member, and the cold air passage through which cold air with low temperature passes is stored. Since the distance from the freezing room with the lowest temperature in the room is maintained and isolated, the temperature difference between the freezing room and the freezing room increases according to the distance from the freezing room. Perspiration (condensation) is less likely to occur on the wall surface of the cold air passage through which the cold air that has passed through passes through, and heaters for preventing dew condensation can be reduced or eliminated.

According to the sixth aspect of the present invention, since the cold air duct has two cold air passages, the cold air distributed by the cold air distribution member is individually guided to the vegetable compartment, and even when the distributed cold air is reduced, the vegetable compartment is reduced. The flow of cold air to the room is secured, and the lack of cooling in the vegetable compartment can be eliminated. Further, the cold air duct can be downsized and the number of parts can be reduced, and the cold air passage through which the cold air having a slightly elevated temperature passes is distributed by the cold air distribution member.
The cold air passage through which cold air with a low temperature passes keeps the distance from the coldest cooling chamber in the storage chamber and is isolated, so that the temperature difference with the cooling chamber increases according to the distance from the cooling chamber. As a result, sweating (condensation) is less likely to occur on the wall surface of the cold air duct (particularly, the cold air passage through which cold air passes through the refrigerating chamber), and the number of heaters for preventing dew condensation can be reduced or eliminated.

[Brief description of drawings]

FIG. 1 is a front view of a body of a refrigerator-freezer according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the main body.

FIG. 3 is an enlarged front view of a refrigerating chamber formed in the main body.

FIG. 4 is a plan sectional view of the refrigerator-freezer.

FIG. 5 is a perspective view of a duct forming a cold air supply path for a vegetable compartment of the refrigerator-freezer.

FIG. 6 is a plan sectional view of the duct.

FIG. 7 is a cross-sectional plan view of a duct according to another embodiment of the present invention.

FIG. 8 is a plan cross-sectional view of the refrigerator-freezer showing a state in which a cold air passage of the duct through which the cool air directly passes is arranged to face the freezing compartment.

FIG. 9 is a plan cross-sectional view of a refrigerator-freezer showing a state in which a cool air passage of the duct through which cool air directly passes is arranged to face a cooling chamber.

FIG. 10 is a cross-sectional plan view of a duct according to another embodiment of the present invention.

FIG. 11 is a plan sectional view of a duct according to another embodiment of the present invention.

[Explanation of symbols]

 1 Main Body 2 Inner Box 3 Outer Box 5 Refrigerator 6 Freezer 7 Vegetable Room 12 Cooler 14 Cooling Room 15 Ice Greenhouse 18 Cold Air Passage for Refrigerator Room 19 Cold Air Passage for Vegetable Room 23 Cold Air Distribution Member 26 Cold Air Supply Route for Vegetable Room 26A , 26B, 26C, 26D, 26F ducts

Front page continuation (72) Inventor Kazuhiko Kondo 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Kyoya Tateno 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture No. Sanyo Denki Co., Ltd. (72) Inventor Tatsuhiko Yamaguchi 2-5-5 Keihan Hondori, Moriguchi-shi, Osaka Sanyo Denki Co., Ltd. (72) Junichi Todo 2-5 Keihan-hondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A refrigerating refrigerator provided with a main body of a heat insulating structure having a front opening filled with a foam insulating material between the inner and outer boxes, and a cold air duct embedded in the foam insulating material for guiding cool air,
A refrigerator-freezer characterized in that the cold air duct is formed of a foamed resin having a low expansion ratio. 2. A refrigerating refrigerator provided with a main body of a heat insulating structure having a front opening filled with foam insulation between the inner and outer boxes, and a cold air duct embedded in the foam insulation to guide cool air,
The cold air duct is formed of a foamed resin having a low expansion ratio,
Moreover, a refrigerator-freezer having a plurality of cool air passages. 3. A refrigerating compartment, a freezing compartment, and a vegetable compartment are partitioned by a partition wall in order from the inside of a main body of a heat insulating structure having a front opening, and the refrigerating compartment is provided in a cooling compartment formed behind the freezing compartment. A cooler, an adiabatic cool air distribution member that is provided so as to project inward from the lower part of the refrigerating chamber, and distributes cool air from the cooler; and a cool air distributing member formed behind the refrigerating chamber. In a refrigerating refrigerator comprising a cold air supply path for a cold room for supplying cold air to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room, for supplying cold air to the vegetable room, A refrigerator-freezer characterized in that a cold air duct is formed of a foamed resin having a low expansion ratio. 4. The inside of the main body of the heat insulating structure having a front opening is partitioned by a partition wall into a refrigerating room, a freezing room and a vegetable room in this order from the top, and the refrigerating room is provided in a cooling room formed behind the freezing room. A cooler, an adiabatic cool air distribution member that is provided so as to project inward from the lower part of the refrigerating chamber, and distributes cool air from the cooler; and a cool air distributing member formed behind the refrigerating chamber. In a refrigerating refrigerator comprising a cold air supply path for a cold room for supplying cold air to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room, for supplying cold air to the vegetable room, The refrigerator / freezer is characterized in that the cold air duct has two cold air passages through which cold air that has passed through the refrigerating compartment and cold air that has been distributed by the cold air distribution material pass through separately, and is made of foamed resin. 5. A main body of a heat insulating structure having a front opening is partitioned by a partition wall into a refrigerating compartment, a freezing compartment and a vegetable compartment in order from the top, and the refrigerating compartment is provided in a cooling compartment formed behind the refrigerating compartment. A cooler, an adiabatic cool air distribution member that is provided so as to project inward from the lower part of the refrigerating chamber, and distributes cool air from the cooler; and a cool air distributing member formed behind the refrigerating chamber. In a refrigerating refrigerator comprising a cold air supply path for a cold room for supplying cold air to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room, for supplying cold air to the vegetable room, The cold air duct has two cold air passages through which the cool air passing through the refrigerating room and the cold air distributed by the cold air distribution material pass separately, and is formed by a foamed resin having a low expansion ratio and distributed by the cold air distribution material. So that the cold air passage that passes through faces the freezer Refrigerator, characterized in that it is location. 6. A refrigerating compartment, a freezing compartment, and a vegetable compartment are sequentially partitioned by a partition wall from the inside of a main body of a heat insulating structure having a front opening, and the refrigerating compartment is provided in a cooling compartment formed behind the freezing compartment. A cooler, an adiabatic cool air distribution member that is provided so as to project inward from the lower part of the refrigerating chamber, and distributes cool air from the cooler; and a cool air distributing member formed behind the refrigerating chamber. In a refrigerating refrigerator comprising a cold air supply path for a cold room for supplying cold air to the cold room, and a cold air duct provided inside the heat insulating material at the back of the freezing room, for supplying cold air to the vegetable room, The cold air duct has two cold air passages through which the cool air passing through the refrigerating chamber and the cold air distributed by the cold air distribution material pass separately, and is formed by a foamed resin having a low expansion ratio and distributed by the cold air distribution material. So that the cold air passage that passes through faces the cooling chamber side. Refrigerator, characterized in that it is location.