JP2006234218A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To keep foods at a predetermined temperature even when placed on any shelves installed in a refrigerating chamber while avoiding the problem that the foods are frozen in contact with an inner box. <P>SOLUTION: The foods placed on a first shelf 7 and a second shelf 8 are uniformly cooled by using an aluminum plate 15 which is provided facing the back face of the inner box with a gap in a space between the back face of the inner box 3 and the shelf and whose surface has uniform temperature distribution. Even during stopping a compressor, air cooled by a refrigerating chamber cooling pipe 19 and having a heavy specific gravity prevents the exposure of the foods with the aluminum plate 15. Thus, a temperature difference between the foods placed on the first shelf 7 and on the second shelf 8 is reduced because the foods placed on the second shelf 8 is not continuously cooled during stopping the compressor. The aluminum plate 15 prevents the contact of the foods with the back face of the inner box to completely prevents the freezing of the foods. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator cooler.

  A direct cooling method is generally employed in refrigerators that are smaller than conventional ones (see, for example, Patent Document 1).

  8 is a sectional view of a conventional refrigerator, FIG. 9 is a front view of a conventional refrigerator compartment, and FIG. 10 is a rear perspective view of an inner box of the conventional refrigerator.

Reference numeral 1 denotes a refrigerator body, in which a space surrounded by the outer box 2 and the inner box 3 is filled with a heat insulating material 4, the upper chamber is a refrigerator compartment 5, and the lower chamber is a freezer compartment 6. The refrigerating room 5 includes a first shelf 7 and a second shelf 8 on which food is placed, and a cooler 9 includes a refrigerating room cooling pipe 10 having a meandering shape for cooling the refrigerating room 5, and A freezer compartment cooling pipe 11 having the same meandering shape for cooling the freezer compartment 6 is formed. The refrigerating compartment cooling pipe 10 is on the heat insulating material 4 side on the back of the inner box 3, and the freezer compartment cooling pipe 11 is a plurality of inner boxes 3. An inner box 3 attached to the surface of the heat insulating material 4 and cooled by heat conduction from the cooler 9 cools the refrigerator compartment 5 and the freezer compartment 6. In order to prevent foods placed on the first shelf 7 and the second shelf 8 from coming into contact with the inner box 3 and freezing, there is a gap between the first shelf 7 and the second shelf 8 and the back of the inner box 3. Is provided. Reference numeral 12 denotes a compressor for supplying refrigerant to the cooler 9, and the refrigerator 12 and the freezer compartment 6 are maintained at a predetermined temperature by repeatedly operating and stopping the compressor 12. Since this cooling method is very simple and inexpensive, it is generally used for small models.
JP-A-7-120108

  However, in the refrigerator refrigeration room described in the above-mentioned conventional example, the foods placed on the first shelf and the second shelf are both cooled during the compressor operation, but the refrigerator is also refrigerated while the compressor is stopped. The air cooled by the room cooling pipe and having a higher specific gravity moves downward in the refrigerator compartment, so that the food placed on the second shelf located under the refrigerator compartment continues to be cooled. There was a tendency for the temperature difference between the food placed on the shelf and the food placed on the second shelf located below to increase. In addition, there is a gap between the first shelf, the second shelf and the back of the inner box, but food may get over the shelf and come into contact with the back of the inner box. It was not solved.

  In view of the above problems, the present invention provides a refrigerator that keeps food at a predetermined temperature and prevents contact between the food and the inner box to prevent the food from freezing, regardless of which shelf the refrigerator is placed on. is there.

  In order to solve the above-mentioned conventional problems, an aluminum plate is mounted in the space between the back of the inner box and the shelf so as to face the back of the inner box, and a spacer is provided to secure a gap between the aluminum plate and the inner box. The upper end of the refrigerating chamber cooling pipe is located above the upper end of the aluminum plate.

  Thus, during operation of the compressor, the inner box is cooled by the cold room cooling pipe, the aluminum plate is cooled by the inner box, and the food placed on the first shelf and the second shelf is cooled by the aluminum plate. . Since the aluminum plate has good thermal conductivity, the temperature distribution on the surface of the aluminum plate is uniform, and the temperature difference between the foods on the first shelf and the second shelf during operation of the compressor is small. .

  In addition, the refrigerator of the present invention attaches an aluminum plate so as to face the back of the inner box in the space between the back of the inner box and the shelf, and arranges a spacer for ensuring a gap between the aluminum plate and the inner box, The upper end of the refrigerator compartment cooling pipe is positioned above the upper end of the aluminum plate, and the refrigerator compartment cooling pipe is attached to the inner box via the cooling plate.

  Thus, during operation of the compressor, the cooling plate is cooled by the cold room cooling pipe, the inner box is cooled by the cooling plate, the aluminum plate is cooled by the inner box, and is placed on the first shelf and the second shelf. The food is cooled by the aluminum plate. Since the aluminum plate has good thermal conductivity, the temperature distribution on the surface of the aluminum plate is uniform, and the temperature difference between the foods on the first shelf and the second shelf during operation of the compressor is small. . Moreover, since the upper end of the refrigerator compartment cooling pipe is located above the upper end of an aluminum plate, cold air can be delivered also to the front part of a 1st shelf.

  The refrigerator of the present invention can reduce the temperature difference between foods placed on either the first shelf or the second shelf even when the compressor is operating and stopped. Moreover, since the aluminum plate prevents the food from contacting the back of the inner box, the food can be completely prevented from freezing.

  According to the first aspect of the present invention, an aluminum plate is attached to a space between the back surface of the inner box and the shelf so as to face the back surface of the inner box, and a spacer is provided to secure a gap between the aluminum plate and the inner box. Since the upper end of the refrigerator compartment cooling pipe is positioned above the upper end of the aluminum plate, during operation of the compressor, the inner box is cooled by the refrigerator compartment cooling pipe, the aluminum plate is cooled by the inner box, and the first The food on the shelf and the second shelf is cooled by the aluminum plate. Since the aluminum plate has good thermal conductivity, the temperature distribution on the surface of the aluminum plate is uniform, and the temperature difference between the foods on the first shelf and the second shelf during operation of the compressor is small. . Moreover, since the upper end of the refrigerator compartment cooling pipe is located above the upper end of an aluminum plate, cold air can be delivered also to the front part of a 1st shelf. While the compressor is stopped, the air that has been cooled by the cold room cooling pipe and has a higher specific gravity moves below the space composed of the aluminum plate and the inner box. Since the food on the second shelf is prevented from being exposed to fresh air, the food on the second shelf does not continue to be cooled while the compressor is stopped, and when the compressor is stopped. Since the surface temperature of the aluminum plate is uniform, the temperature difference between the foods placed on the first shelf and the second shelf when the compressor is stopped is small. From the above, the temperature difference between the foods placed on the first shelf, the second shelf, or any of the shelves is small. Moreover, since the aluminum plate prevents the food from contacting the back of the inner box, the food can be completely prevented from freezing.

  According to the second aspect of the present invention, an aluminum plate is attached to the space between the back surface of the inner box and the shelf so as to face the back surface of the inner box, and a spacer is provided to secure a gap between the aluminum plate and the inner box. Since the upper end of the refrigerator compartment cooling pipe is located above the upper end of the aluminum plate and the refrigerator compartment cooling pipe is attached to the inner box via the cooling plate, the refrigerator is cooled by the refrigerator compartment cooling pipe during operation of the compressor. The plate is cooled, the inner box is cooled by the cooling plate, the aluminum plate is cooled by the inner box, and the food placed on the first shelf and the second shelf is cooled by the aluminum plate. Since the aluminum plate has good thermal conductivity, the temperature distribution on the surface of the aluminum plate is uniform, and the temperature difference between the foods on the first shelf and the second shelf during operation of the compressor is small. . Moreover, since the upper end of the refrigerator compartment cooling pipe is located above the upper end of an aluminum plate, cold air can be delivered also to the front part of a 1st shelf. While the compressor is stopped, the air that has been cooled by the cold room cooling pipe and has a higher specific gravity moves below the space composed of the aluminum plate and the inner box. Since the food on the second shelf is prevented from being exposed to fresh air, the food on the second shelf does not continue to be cooled while the compressor is stopped, and when the compressor is stopped. Since the surface temperature of the aluminum plate is uniform, the temperature difference between the foods placed on the first shelf and the second shelf when the compressor is stopped is small. From the above, the temperature difference between the foods placed on the first shelf, the second shelf, or any of the shelves is small. Moreover, since the aluminum plate prevents the food from contacting the back of the inner box, the food can be completely prevented from freezing. Furthermore, since the cooling plate is attached to the inner box, the heat transfer area to the inner box can be increased, the cooling efficiency can be improved, the operating rate of the compressor can be reduced, and the electricity bill can be reduced.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the aluminum plate made of a material having a water contact angle of 30 degrees or less is attached, so that the surface tension of the water adhering to the aluminum plate is large. Thus, the evaporation of water adhering to the aluminum plate is promoted when the compressor is stopped, so that the humidity in the refrigerator becomes high and the freshness of the food is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the outer box 2, the inner box 3, the heat insulating material 4, the freezer compartment 6, the first shelf 7, the second shelf 8, the freezer compartment cooling pipe 11, and the compressor 12 are the same as those in the conventional example, and the detailed explanation is as follows. Omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of the refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a front view of the refrigerator compartment in the first embodiment of the present invention. FIG. 3 is a rear perspective view of the inner box of the refrigerator according to Embodiment 1 of the present invention.

  In FIGS. 1, 2 and 3, reference numeral 13 denotes a refrigerator main body, and an aluminum plate 15 is provided in a space between the first shelf 7, the second shelf 8 and the inner box 3 on the back surface of the upper refrigerator compartment 14. 16 is attached to the inner box 3 by a mounting member 17. The spacer 16 provides a gap between the aluminum plate 15 and the back surface of the inner box 3. Reference numeral 18 denotes a cooler, which includes a refrigerator compartment cooling pipe 19 having a meandering shape for cooling the refrigerator compartment 14 and a freezer compartment cooling pipe 11 having a meandering shape for cooling the freezer compartment 6. The upper end 19 a of 19 is located above the upper end 15 a of the aluminum plate 15.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  During the operation of the compressor 12, the inner box 3 is cooled by the cold room cooling pipe 19, the aluminum plate 15 is cooled by the inner box 3, and the food placed on the first shelf 7 and the second shelf 8 is the aluminum. It is cooled by the plate 15. Since the aluminum plate 15 has good thermal conductivity, the temperature distribution on the surface of the aluminum plate 15 is uniform, and the food placed on either the first shelf 7 or the second shelf 8 during operation of the compressor 12. There is little temperature difference. Further, since the upper end 19 a of the refrigerator compartment cooling pipe 19 is located above the upper end 15 a of the aluminum plate 15, cold air can be delivered to the front portion of the first shelf 7. While the compressor 12 is stopped, the air that has been cooled by the refrigerating room cooling pipe and has a higher specific gravity is accumulated below the aluminum plate 15, but the food that the aluminum plate 15 has placed on the second shelf 8 on the cooled air. Therefore, the food placed on the second shelf 8 is not continuously cooled while the compressor 12 is stopped, and the surface temperature of the aluminum plate 15 when the compressor 12 is stopped is uniform. Therefore, the temperature difference between the foods placed on either the first shelf 7 or the second shelf 8 when the compressor 12 is stopped is small. From the above, there is little difference in food temperature between the first shelf 7 and the second shelf 8. Moreover, since the aluminum plate 15 prevents the food from contacting the back of the inner box 3, the food can be completely prevented from freezing.

(Embodiment 2)
FIG. 4 is a cross-sectional view of the refrigerator in the second embodiment of the present invention. FIG. 5 is a rear perspective view of the inner box of the refrigerator according to the second embodiment of the present invention.

  4 and 5, reference numeral 20 denotes a refrigerator main body, and an aluminum plate 15 is a spacer in the space between the first shelf 7 and the second shelf 8 and the inner box 3 on the back of the upper refrigerator compartment 21. 16 is attached to the inner box 3 by a mounting member 17. The spacer 16 provides a gap between the aluminum plate 15 and the back surface of the inner box 3. Reference numeral 22 denotes a cooler, which includes a refrigerator compartment cooling pipe 23 having a meandering shape for cooling the refrigerator compartment 21 and a freezer compartment cooling pipe 11 having a meandering shape for cooling the freezer compartment 6. 23 is attached to the inner box 3 via a cooling plate 24. The upper end 23 a of the refrigerator compartment cooling pipe 23 is located above the upper end 15 a of the aluminum plate 15.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  During operation of the compressor 12, the cooling plate 24 is cooled by the cold room cooling pipe 23, and the inner box 3 is cooled by the cooling plate 24. Since the aluminum plate 15 is cooled from the inner box 3, the food placed on the first shelf 7 and the second shelf 8 is cooled by the aluminum plate 15. Since the aluminum plate 15 has good thermal conductivity, the temperature distribution on the surface of the aluminum plate 15 is uniform, and the food placed on either the first shelf 7 or the second shelf 8 during operation of the compressor 12. There is little temperature difference. Further, since the upper end 23 a of the refrigerator compartment cooling pipe 23 is located above the upper end 15 a of the aluminum plate 15, the cold air can be delivered to the front portion of the first shelf 7. While the compressor 12 is stopped, the air cooled by the refrigerating room cooling pipe 23 and having a higher specific gravity is accumulated below the aluminum plate 15, but the aluminum plate 15 is placed on the second shelf 8 on the cooled air. Since the food is prevented from being exposed, the food placed on the second shelf 8 is not continuously cooled while the compressor 12 is stopped, and the surface temperature of the aluminum plate 15 while the compressor 12 is stopped is Since it is uniform, the temperature difference between the foods placed on either the first shelf 7 or the second shelf 8 when the compressor 12 is stopped is small. From the above, there is little difference in food temperature between the first shelf 7 and the second shelf 8. Moreover, since the aluminum plate 15 prevents the food from contacting the back of the inner box 3, the food can be completely prevented from freezing. Furthermore, since the entire cooling plate 24 is cooled by the heat conduction by the cold room cooling pipe 23, the heat conduction area to the inner box 3 can be expanded, the cooling efficiency is increased, and the operation rate of the compressor 12 is lowered. As a result, the electricity bill can be reduced.

(Embodiment 3)
FIG. 6 is a cross-sectional view of the refrigerator according to Embodiment 3 of the present invention. FIG. 7 is a front view of the refrigerating room according to Embodiment 3 of the present invention.

  6 and 7, reference numeral 25 denotes a refrigerator main body. On the back surface of the upper refrigerator compartment 26, there is a water contact angle in the space between the first shelf 7 and the second shelf 8 and the inner box 3. An aluminum plate 27 made of a material of 30 degrees or more is attached to the inner box 3 by a mounting member 17 via a spacer 16. The spacer 16 provides a gap between the aluminum plate 27 and the back surface of the inner box 3. Reference numeral 18 denotes a cooler, which includes a refrigerator compartment cooling pipe 19 having a meandering shape for cooling the refrigerator compartment 26 and a freezer compartment cooling pipe 11 having a meandering shape for cooling the freezer compartment 6. The upper end 19a of 19 is located above the upper end 27a of the aluminum plate 27.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  During the operation of the compressor 12, the inner box 3 is cooled by the cold room cooling pipe 19, the aluminum plate 27 is cooled by the inner box 3, and the food placed on the first shelf 7 and the second shelf 8 is the aluminum. It is cooled by the plate 27. Since the aluminum plate 27 has good thermal conductivity, the temperature distribution on the surface of the aluminum plate 27 is uniform, and the food placed on either the first shelf 7 or the second shelf 8 during operation of the compressor 12. There is little temperature difference. Further, since the upper end 19 a of the refrigerator compartment cooling pipe 19 is located above the upper end 27 a of the aluminum plate 27, the cold air can be delivered to the front portion of the first shelf 7. While the compressor 12 is stopped, the air cooled by the cold room cooling pipe 19 and having a higher specific gravity is accumulated below the aluminum plate 27. The aluminum plate 27 is placed on the second shelf 8 on the cooled air. Since the food is prevented from being exposed, the food placed on the second shelf 8 does not continue to be cooled while the compressor 12 is stopped, and the surface temperature of the aluminum plate 27 when the compressor 12 is stopped is Since it is uniform, the temperature difference between the foods placed on either the first shelf 7 or the second shelf 8 when the compressor 12 is stopped is small. From the above, there is little difference in food temperature between the first shelf 7 and the second shelf 8. Moreover, since the aluminum plate 27 prevents the food from contacting the back of the inner box 3, the food can be completely prevented from freezing. Furthermore, since the aluminum plate 27 is made of a material having a water contact angle of 30 degrees or more, the surface area of the moisture adhering to the aluminum plate 27 cooled during the operation of the compressor 12 is large, and the moisture is surrounded by the surroundings when the compressor 12 is stopped. Evaporation takes place from the heat. For this reason, the humidity in the refrigerator compartment 26 is high humidity, and the freshness of food improves.

  As described above, the refrigerator according to the present invention can reduce the temperature difference between foods placed on either the first shelf or the second shelf even when the compressor is in operation or stopped. In addition, since the aluminum plate prevents the food from contacting the back of the inner box, the food can be completely prevented from freezing, so that the aluminum plate can be applied to food storage.

Sectional drawing of the refrigerator in Embodiment 1 of this invention The front view of the refrigerator compartment of the refrigerator in Embodiment 1 of this invention The rear perspective view of the inner box of the refrigerator in Embodiment 1 of the present invention Sectional drawing of the refrigerator in Embodiment 2 of this invention The rear perspective view of the inner box of the refrigerator in Embodiment 2 of the present invention Sectional drawing of the refrigerator in Embodiment 3 of this invention Front view of the refrigerator compartment of the refrigerator in Embodiment 3 of the present invention Cross-sectional view of a conventional refrigerator Front view of conventional refrigerator compartment Rear perspective view of the inner box of a conventional refrigerator

Explanation of symbols

2 outer box 3 inner box 4 heat insulating material 7 first shelf 8 second shelf 14 refrigerator compartment 15 aluminum plate 15a aluminum plate upper end 16 spacer 19 refrigerator compartment cooling pipe 19a refrigerator compartment cooling pipe upper end 21 refrigerator compartment 23 refrigerator compartment cooling pipe 23a Refrigeration room cooling pipe upper end 24 Cooling plate 26 Refrigeration room 27 Aluminum plate 27a Aluminum plate upper end

Claims (3)

  In a refrigerating room of a direct-cooling refrigerator in which a space composed of an outer box and an inner box is filled with a heat insulating material, and a refrigerating room cooling pipe having a meandering shape is attached to the heat insulating material side on the back of the inner box, at least two Two or more shelves are horizontally arranged to provide a space behind the inner box, and an aluminum plate is attached to the space so as to face the back of the inner box, and a spacer for securing a gap between the aluminum plate and the inner box And the upper end of the refrigerator compartment cooling pipe is located above the upper end of the aluminum plate.   Refrigeration of a direct-cooled refrigerator in which a space composed of an outer box and an inner box is filled with heat insulating material, and a cold room cooling pipe having a meandering shape is attached to the heat insulating material side on the back of the inner box through a cooling plate In the room, at least two shelves are horizontally arranged to provide a space behind the inner box, and an aluminum plate is attached to the space so as to face the back of the inner box, and there is a gap between the aluminum plate and the inner box. A refrigerator in which a spacer for securing is disposed, and the upper end of the refrigerator compartment cooling pipe is positioned above the upper end of the aluminum plate.   The refrigerator according to claim 1 or 2, wherein an aluminum plate made of a material having a water contact angle of 30 degrees or less is attached.

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