JPH0519883U - Refrigerator cool air circulation device - Google Patents

Abstract

(57) [Summary] [Purpose] In a refrigerator in which a storage inner box is surrounded by a heat-insulating box, prevent the lower back portion of the inner box from being overcooled. [Arrangement] The distance between the back surface 30 of the inner box 20 and the inner surface of the heat insulating box body 14 is set to 1/2 or less of the distance between the top, bottom, left and right of the inner box 20 and the inner surface of the heat insulating box body 14, and the back surface of the inner box 30 and the heat insulating box body. The cold air is prevented from flowing into the space between the inner surface and the inner surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cool air circulation device, particularly in a high humidity refrigerator.

[0002]

[Prior Art]

 A conventional high-humidity refrigerator, as shown in Japanese Unexamined Patent Publication No. 2-272287, has a heat-insulating box made of a metal plate made of a good heat conductor, which is substantially evenly spaced over the top, bottom, left and right, and the back. Boxes are installed and cold air is circulated within the space to cool the inner box from the outer surface, thereby refrigerating foods and the like in the inner box in a high humidity atmosphere.

That is, in a high-humidity refrigerator, the refrigerated food or the like in the inner box is kept in a windless state without being forcedly circulated in the inner box so that the stored food or the like is naturally cooled, so The air in the inner box cooled from the box is likely to drop below the inner box and accumulate at the bottom of the inner box. On the other hand, a door is provided on the front of the high-humidity refrigerator, and the front of the inner box opens toward this, so the front part of the inner box is cooled only from the top and bottom, while the rear part of the inner box is cooled. Since it is cooled from the top and bottom and the back, the bottom of the back of the inner box tends to be particularly colder than other parts of the inner box, and there was a problem that the food etc. stored in that part was frozen. ..

[0004]

[Problems to be solved by the device]

 The present invention is intended to surely prevent the above-mentioned partial freezing of food or the like in a refrigerator with a simple structure.

[0005]

[Means for Solving the Problems]

 In order to achieve this object, the cold air circulation device of the refrigerator according to the present invention has an inner box made of a good heat conductor installed in the heat insulating box at intervals, and cool air is circulated within the above interval to surround the inner box. In a refrigerator configured to cool from the surface, the distance between the back surface of the inner box and the inner surface of the heat-insulating box is 1/2 or less of the distance between the top and bottom and right and left of the inner box and the inner surface of the heat-insulating box, Alternatively, it is set to 0, or has a structure in which a member for suppressing the inflow of cold air between the back surface of the inner box and the inner surface of the heat insulating box is arranged.

[0006]

[Action]

 Therefore, the amount of cold air that flows in the space between the back of the inner box and the inner surface of the heat insulating box is significantly smaller than the amount of cool air that flows in the space between the upper, lower, left and right of the inner box and the inner surface of the heat insulating box. The lower part of the back of the box is prevented from becoming particularly colder than other parts in the inner box, and the temperature inside the inner box is made uniform, so that the food etc. stored inside is partially frozen. To be prevented.

[0007]

【Example】

 Hereinafter, embodiments of the present invention shown in the drawings will be specifically described. 1 and 2, a high-humidity refrigerator 1 has a machine room 4 which houses a refrigerant compressor, a condenser, a fan motor and the like (not shown) and has an electric board 2 and a ventilation port 3 on the front surface thereof, and a machine room 4 adjacent to the machine room 4. The inside of the refrigerator 10 is covered with a heat insulating material 13 such as urethane foam between the inner and outer plate materials 11 and 12. A heat insulating door 16 having a structure similar to that of the heat insulating box 14 is attached to the opening 15 with a packing 17 sandwiched therebetween.

An inner box 20 made of a heat conductive metal plate such as a stainless steel plate is installed in the heat insulating box body 14, and is provided between a side surface 21 of the inner box 20 on the machine room 4 side and an inner surface of the heat insulating box body 14. Is provided with an evaporator 22 and an in-compartment fan 23 connected to the refrigerant compressor, condenser, etc., and a drain trap device that extends to the outside through the bottom surface of the heat insulating box body 14 on the lower surface of the inner box 20. 24 is attached, and a dew receiving panel 26 is detachably attached to the upper part of the inner box 20 by a fixed latch 25.

Although the intervals between the upper and lower surfaces 27 and 28 of the inner box 20 and the left and right side surfaces 21 and 29 and the inner surface of the heat insulating box body 14 are sufficiently wide as shown in the figure, the back surface 30 of the inner box 20 and the heat insulating box 14 are The distance to the inner surface of the body 14 is set to be much narrower than the distance. Therefore, the cool air cooled by the evaporator 22 flows between the outer peripheral surface of the inner box 20 and the inner surface of the heat insulating box body 14 as shown by the arrow in FIG. However, the foodstuffs and the like in the inner box 20 are indirectly cooled in a high-humidity atmosphere, but there is no cool air between the upper and lower surfaces 27, 28 of the inner box 20 and the left and right side surfaces 21, 29 and the inner surface of the heat insulating box body 14. Since a large amount of air flows, and the flow rate of the cool air is small between the back surface 30 of the inner box 20 and the inner surface of the heat insulating box body 14, the inner box 20 is cooled mainly from its upper and lower surfaces 27, 28 and both left and right side surfaces 21, 29. , Not much cooled from the back. In this case, if the latter interval is set to 1/2 or less of the former interval, the amount of cold air flowing through the latter interval is greatly reduced by the interval ratio or more due to the flow resistance of the wall surface, and the cooling suppression effect is also large. Become.

For this reason, even when the air in the inner box 20 is not forcedly circulated by the fan, it is unlikely that only the lower back portion of the inner box 20 is cooled particularly strongly as in the conventional case. Since the whole of the box 20 is cooled relatively uniformly, the whole of the food etc. in the inner box 20 can be stored at a sufficiently low temperature without freezing a part of the food etc. in the inner box 20. .. Further, since the depth of the inner box 20 can be increased as the distance between the back surface 30 of the inner box 20 and the inner surface of the heat insulating box body 14 is narrowed, the volume of the inner box 20 is correspondingly increased and the refrigerator is The storage capacity of 10 can be increased. In addition, the back surface 30 of the inner box 20 is adhered to the inner surface of the heat insulating box body 14 so as to prevent the cooling air from flowing to the back surface 30 side, thereby suppressing the cooling from the back surface 30 and further increasing the depth of the inner box 20. You can also do it.

Next, another embodiment will be described by assigning the same reference numerals to the parts equivalent to those of the above embodiment. In the embodiment shown in FIG. 3, a box-shaped baffle member 40 made of a thin metal plate is screwed back to back 30 of the inner box 20 so as to open toward the inner surface of the heat insulating box 14, and is welded or bonded. The cool air, which is attached and forms a small gap between the distal end of the baffle member 40 and the inner surface of the heat insulating box body 14, flows between the inner box back surface 30 and the inner surface of the heat insulating box body 14 from above and from the side. Is adjusted so that the lower back portion of the inner box 20 is not cooled particularly strongly. In addition, the height of both side edges of the baffle member 40 is made smaller than the upper and lower edges, and the amount of cool air flowing from the side between the inner box rear surface 30 and the inner surface of the heat insulating box body 14 is slightly increased to make the inner box rear surface 30 The cooling capacity of the baffle member 40, or by removing both side edges of the baffle member 40 and leaving only the upper and lower edges, it is possible to suppress the inflow of cool air from above between the inner box back surface 30 and the inner surface of the heat insulating box body 14. Even so, some effects can be obtained.

In the embodiment shown in FIGS. 4 and 5, the flexible baffles 50, 51 are attached to the upper end of the rear surface 30 of the inner box 20 and both side corners with screws, welding, bonding or the like. The tips of the baffle plates 50 are elastically bent downward and the tips of the baffle plates 51 are elastically bent outward so that the baffle plates 50, The holes 52 and 53 formed in 51 respectively adjust the amount of cool air flowing in from above and from the side between the inner box rear surface 30 and the inner surface of the heat insulating box body 14, and the inner box 20 is similar to the above. The lower back part of the inside is not particularly strongly cooled.

Since the tips of the baffles 50 and 51 are elastically contacted with the inner surface of the heat insulating box body 14, there is no possibility that these will resonate with the moving parts of the high-humidity refrigerator 1 and generate noise. In addition, if it is necessary to further restrict or prevent the inflow of cold air between the inner box back surface 30 and the inner surface of the heat insulating box body 14, the opening areas of the holes 52 and 53 are set to It may be appropriately reduced, or either one may be omitted, or both may be omitted.

Further, in the embodiment shown in FIG. 6, a flat plate-shaped baffle member 60 made of urethane foam or the like is attached to the inner surface of the heat insulating box body 14 facing the back surface 30 of the inner box 20, and the space between the inner box back surface 30 and The same effect as described above is obtained by forming a small gap in the inner box, and the baffle member 60 is sandwiched between the inner box back surface 30 and the inner surface of the heat insulating box body 14, or the baffle member 60 is inserted. It can be attached to the inner box rear surface 30 side so that cold air does not come into contact with the inner box rear surface 30 side.

In each of the embodiments shown in FIGS. 3 to 6, by providing the baffle members 40 and 60 and the baffle plates 50 and 51, the entire back surface 30 of the inner box 20 is provided between the inner surface and the inner surface of the heat insulating box body 14. The flow of cold air is restricted or suppressed to suppress the flow rate of cold air. It is also possible to reduce the cooling capacity in the lower part of the back of the inner box 20 by providing only the inside of the heat insulating box 14 and the inner surface of the inner box 20 and suppressing only the inflow of cool air to the lower side of the inner box back 30. is there.

[0016]

[Effect of the device]

 In the cool air circulation device of the refrigerator according to the present invention, the amount of cold air flowing in the space between the back of the inner box and the inner surface of the heat insulating box is equal to the amount of cool air flowing in the space between the upper and lower and left and right of the inner box and the inner surface of the heat insulating box. Since it is much smaller than the amount, it is surely prevented that the lower part of the back of the inner box becomes particularly colder than the other parts in the inner box, the temperature inside the inner box is made uniform, and it is stored inside. It is possible to prevent the foods, etc. that are present from being partially frozen.

[Brief description of drawings]

FIG. 1 is a front view showing a longitudinal section of a main part in an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view taken along the line II-II in FIG.

FIG. 3 is a vertical sectional view of another embodiment of the present invention.

FIG. 4 is a vertical sectional view of still another embodiment of the present invention.

5 is an enlarged cross-sectional view taken along the line VV of FIG.

FIG. 6 is a vertical cross-sectional view of still another embodiment of the present invention.

[Explanation of symbols]

 10 Refrigerator 14 Thermal Insulation Box 16 Thermal Insulation Door 20 Inner Box 22 Evaporator 30 Inner Box Back 40 Baffle Member 50 Baffle Plate 51 Baffle Plate 60 Baffle Member

Claims (1)

[Scope of utility model registration request] 1. A refrigerator configured such that inner boxes made of a good thermal conductor are installed at intervals in a heat-insulating box, and cool air is circulated within the intervals to cool the inner box from the outer peripheral surface. The distance between the back surface of the box and the inner surface of the heat-insulating box is equal to the space between the top and bottom and right and left of the inner box and the inner surface of the heat-insulating box.
/ 2 or less, or 0, or a cool air circulation device for a refrigerator provided with a member for suppressing the inflow of cool air between the back surface of the inner box and the inner surface of the heat insulating box.