JPH087332Y2 - refrigerator - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a refrigerator, in particular, an insulating box body having a door at a front opening, and cooling means arranged outside the inner box of the insulating box body. The present invention relates to a refrigerator in which a storage room inside a box is indirectly cooled.

[0002]

2. Description of the Related Art Conventionally, in a refrigerator in which a cooling means for circulating a refrigerant or brine is arranged outside the inner box, and the storage chamber inside the inner box is indirectly cooled by this cooling means,
Condensation is likely to occur on the surface of the inner box, and a dew tray is provided on the ceiling to receive water drops dripping from the ceiling. However, such a dew tray has a drawback that it prevents convection of cold air and causes dew condensation on the lower surface of the dew tray itself.

On the other hand, it is already known that the dew pans (drain pans) of various coolers are provided with fin-shaped slits for cold air convection (see Japanese Utility Model Laid-Open No. 62-195077). It has the drawback that water droplets spill from the slit and fall onto the stored product.

Therefore, in order to solve these drawbacks, the dew trays of the conventional refrigerator for cold air convection are arranged with a gap therebetween as shown in FIGS. 7 to 9. , A plurality of rows of cross-sectional mountain-shaped members 17, 17 ...
The rows of 7 '... are arranged above and below such that the side portions of both members 17 and 17' and the side portions are spaced apart and are parallel to each other, and the respective members 17 arranged in this manner, 17 and 17'17 '... Both ends are fixed to a fixed frame 18 having a U-shaped cross section having a side wall 18a.

Each member 17, 17 ... And 17 ',
The fixing of 17 '... to the fixed frame 18 is performed by welding and other known fixing means, and as shown in FIG.
A gap d is formed between them.

FIG. 10 shows a state in which the conventional dew tray 16 is attached to the ceiling in the refrigerator by a fixing frame and its supporting means.

As shown in the figure, in order to increase the volume of the storage chamber and prevent the water droplets condensed on the ceiling from falling onto the stored products, the dew tray is brought as close as possible to the ceiling,
It is also very close to the rear wall of the inner box.

Therefore, cold air from the ceiling of the storage room 26
Partially passes through the gap between the cross-sectional mountain-shaped members 17, 17, and the side portion of the cross-sectional mountain-shaped member 17 and the cross-sectional inverted mountain-shaped member 1
The members having the inverted mountain-shaped cross section 17 ', 1
Although it descends below the gap between 7 ', most of it
The upper end and the lower end of the dew tray 16 were blocked by the fixed frame 18, and large convection could not be generated.

[0009]

That is, in the conventional refrigerator in which the storage chamber inside the inner box is indirectly cooled from the outside by the cooling means arranged outside the inner box of the heat-insulating box, the ceiling of the storage chamber is used. In order to receive the drop of water droplets that condense on
In the case where the dew pan is installed on the ceiling in a tilted manner, the cool air from the ceiling above the dew pan does not sufficiently convection into the storage chamber and stays as it is, thus cooling below the dew pan. In addition to being damaged , the cool air that circulates due to convection is discharged.
There was a problem of leakage from the water holes .

Accordingly, the present invention is to solve the above problems, facilitate the convective dew pan above the cold air
Along with the convection cold air drain
It is an object of the present invention to provide a refrigerator having a dew tray that prevents leakage of water and improves the temperature distribution characteristics in the storage chamber.

[0011]

In order to achieve the above object, the present invention provides a heat insulating box having a door at a front opening, and a cooling means arranged outside the inner box of the heat insulating box. In the refrigerator in which the storage chamber inside the inner box is indirectly cooled by the cooling means, in the ceiling portion of the storage chamber, the dew tray facing the ceiling with a small gap from the ceiling is inclined rearward low. A cool air passage is formed between the front part of the dew tray and the ceiling and between the rear part of the dew pan and the rear wall of the inner box to generate convection circulating around the dew pan and to drain water. Hole
Open at a position that does not directly face this circulating convection
It prevents the leakage of cold air .

[0012]

[Operation] Convection that circulates through the drainage hole while forming a passage for cool air between the front part of the dew tray arranged in the storage chamber and the ceiling and between the rear part of the dew pan and the rear wall of the inner box. Paired with
Since was opened in direction city location, cause convection circulating dew pan by a passage, the upper cool air cooled dew pan by an outer cooling means is circulated by the convection preparative
In particular, the circulating cold air, especially the cold air that descends along the rear wall,
There is no leakage from the drain hole opening through the drain hole.
Therefore, it is possible to improve the cooling performance of the storage chamber, particularly below the dew tray. Therefore, the temperature distribution in the storage chamber can be made extremely uniform.

[0013]

Embodiments of the present invention will be described below with reference to the refrigerator shown in the drawings. In FIG. 1, reference numeral 1 is an outer box, 2 is an inner box, and a cooling pipe 3 is in contact with the outer side of the inner box 2 in a meandering manner to form a cooling means for the storage chamber S. A heat insulating material 4 is provided between the outer box 1 and the inner box 2 to form a frame of a refrigerator. A refrigeration unit such as a compressor 6 and a condenser 7 is accommodated in the lower portion 5 of the frame body, and a brine tank 9 that accommodates a brine 8 that is a heat medium for cooling and an brine are circulated in the upper portion 11. The circulation pump 10 and the like are stored. The front part of the frame is opened, and the opening 12 has a door 13
Is provided.

As shown in FIG. 2, the brine in the brine tank 9 is cooled by the cooling circuit including the compressor 6, the condenser 7, the cooler 14, and the like. The cooled brine 8 circulates in a meandering manner between the cooling pipe 3 and the brine tank 9 which are closely attached to the outside of the inner box. This circulation is based on the action of the pump 10, and the brine indirectly cools the storage chamber S inside the inner box 2 from the outside. That is, the storage chamber S is cooled by cooling the inner box itself.

When the storage chamber S is cooled in this way, dew condensation occurs on the inner surface of the storage chamber of the inner box 2, and the net rack 15 in the storage chamber is formed.
Condensed water drops fall on the food placed on it, and the quality of stored goods is altered. To prevent this, the dew tray 16
But, it faces the ceiling with a little space between them, and is attached to the inner box with a low inclination to the rear.

Next, the specific structure of the dew tray 16 will be described. 3 and 4, the dew tray 16 is
Similarly to the conventional dew tray 16, a row of a plurality of cross-sectional mountain-shaped members 17, 17 ... Arranged with a gap therebetween and a row of similarly-arranged cross-sectional mountain shaped members 17 ', 17' ... But,
Both members are arranged on the upper side and the lower side so that the side portions and the side portions are spaced apart and overlap each other in parallel, and the upper end portion of each member is provided with the opening portion 19 as a passage in the side wall 20a. The lower support is fixed by a support 20 having a U-shaped cross section, and the lower end is formed with an opening 21 as a passage and a gutter 22 which is curved inward at the side wall 23a. 23) and is fixed.

The sizes of the opening 19 and the opening 21 which form the passage of the cold air are larger as the supporting members 20 and 23 have sufficient strength, and the larger the effect of the cold air circulation is. In addition, the drainage hole 27 (see FIG. 1) is used for vertical connection of the rear wall stock.
Since it is opened on the surface, it can be opened on a horizontal surface such as a conventional bottom wall.
Unlike what you say, the flow of cold air that circulates and descends is exhausted.
The drain hole 27 does not directly face the opening of the water hole 27.
It is possible to prevent cold air from leaking out.

The end of each member is fixed to both supports 20 and 23 by welding, and in the case of the lower support 23, a distance d is provided between the end and the lower support 23 as in the conventional case. Placed. This distance d is preferably as wide as possible so as to enlarge the opening 21 of the trough-shaped portion 22, that is, the passage, and in this case, the space between the lower support 23 having the opening 21 and the wall surface of the refrigerator is also correspondingly increased. It must be wide enough (see Figure 5).

The operation of the dew tray 16 of the refrigerator will be described with reference to FIG. 6. The upper support 20 has an opening 19 as a passage, and the lower support 23 has an opening 21 as a passage. Since they are respectively formed, in the storage chamber, between the ceiling and the upper support body 20 and from the opening 19 to the cross-section mountain-shaped members 17, 17 ... And the cross-section inverted mountain-shaped members 17 ', 1
Thermal convection that circulates in the storage chamber S occurs between the wall portions of the opening 21 and the lower support 23 and the wall surface through the spaces 7 ′ and 7 ′ ... (see the arrow in FIG. 6).
Will also circulate due to the convection. And above
The circulating cold air leaks from the drain hole 27 like
Nor. Therefore, the cool air circulates well in the storage chamber, particularly below the dew tray 16, so that the cooling performance of the storage chamber can be improved and the temperature distribution in the storage chamber can be made uniform.

It should be noted that there is usually sufficient space between the front part of the dew tray and the inner surface of the door, and it is not necessary to consider a special passage. Passages such as openings or notches may be formed in the support.
Further, the present invention can be applied to the dew tray having any shape and structure.

[0021]

According to the present invention, cold air passages are formed between the front part and the ceiling of the dew pan and between the rear part and the rear wall of the inner box to prevent convection circulating around the dew pan. Namaze accounts and door
The position where the drain hole does not directly face this circulating convection
Since the leakage of the cold air which is circulated by opening to the inside is prevented , the cooling performance of the lower side of the dew tray of the storage chamber can be improved and the temperature distribution in the storage chamber can be made uniform. Therefore, a dew tray having a proper size or a proper configuration can be appropriately arranged on the ceiling of the storage chamber to prevent water droplets condensed on the stored product from falling. Therefore, it is possible to prevent the deterioration and decay of the stored goods in the storage room.

[Brief description of drawings]

FIG. 1 is a partial side sectional view of a refrigerator equipped with a dew tray of a refrigerator according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a plane cross section and a cooling circuit of a refrigerator according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view of the dew tray showing an embodiment of the present invention with partial disassembly.

FIG. 4 is a side view of a dew tray showing an embodiment of the present invention.

FIG. 5 is a partially enlarged side view of the dew tray showing the embodiment of the present invention.

FIG. 6 is a schematic view showing a case where a dew tray according to an embodiment of the present invention is mounted in a refrigerator.

FIG. 7 is an exploded perspective view of a dew tray of a conventional refrigerator.

FIG. 8 is a side view of a dew tray of a conventional refrigerator.

FIG. 9 is a partially enlarged side view of a conventional refrigerator.

FIG. 10 is an explanatory diagram of a state of the dew tray of the conventional refrigerator in the refrigerator.

[Explanation of symbols]

 1 Outer box 2 Inner box 3 Cooling pipe 16 Dew pan 17 Cross-section mountain-shaped member 17 'Cross-section inverted mountain-shaped member 18 Fixing frame 20,23 Support body 19,21 Opening 20a, 23a Side wall 22 Gutter-shaped part

Claims (1)

[Scope of utility model registration request] 1. A heat-insulating box body having a door at a front opening, and a cooling means arranged outside the inner box of the heat-insulating box body. The cooling means forms a storage chamber inside the inner box. In a refrigerator that is indirectly cooled, a dew tray facing the ceiling with a small distance from the ceiling is arranged on the ceiling of the storage chamber at a low inclination to the rear, and the dew tray is placed between the front portion of the dew tray and the ceiling and the dew. to form a cold air passage between the rear and the inner box rear wall of the pan, together with causing a convective circulating around the dew pan drainage
Open the holes at positions that do not directly face this circulating convection.
Refrigerator characterized by preventing the leakage of cold air .