JPH079019Y2 - Refrigerator cold air distribution structure - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of the Invention The present invention is to install a storage box inside a heat-insulating box with a required space therebetween, and cool air inside the storage box by circulating cold air. In the double-structured refrigerator configured, the cool air distribution structure of the refrigerator can circulate the cool air thoroughly in the space to improve the cooling efficiency and effectively suppress the rise of the internal temperature due to the outside air entering when the door is opened. It is about.

Conventional technology Vegetables, fruits and other fresh foods such as meat and fish (hereinafter referred to as "ingredients") are generally stored in the refrigerator when they are stored frozen in the refrigerator for a long period of time or when the frozen foods are gradually thawed. It is necessary to keep the temperature change small and to control the evaporation of water from food. In order to meet this demand, a storage box for storing food is formed inside a heat insulating box forming a refrigerating chamber through a required space, and the space defined between the heat insulating box and the storage box. In addition, a storage having a double structure configured to cool the inside of the storage box by circulating the cool air from the cooler is preferably implemented.

An example of the storage having this double structure is shown in FIGS. 4 and 5. The refrigerator shown in the figure has an outer box 2 having a rectangular opening 2a which is largely open to the front side, and an inner box 3 which is installed in the outer box 2 with a required gap and is also largely open to the front side. , A heat insulating box 1 composed of a heat insulating material 4 such as urethane foam filled between the boxes 2 and 3. A storage box 10 made of a heat conductive metal plate such as stainless steel is disposed inside the inner box 3 of the heat insulating box 1 for holding the inner wall and a required space 9. Also storage box 10
Has a rectangular opening 10a that opens forward, corresponding to the rectangular opening 1a in which the heat insulating box 1 is formed. As shown in FIG. 5, a heat insulating door 12 is provided on the front surface of the heat insulating box 1 so as to openably and closably close the front opening 1a of the heat insulating box 1. The heat insulating doors 12 are arranged in a required number in the longitudinal direction of the heat insulating box 1 according to the length dimension of the heat insulating box 1.

Further, between the inner ceiling wall of the inner box 3 and the upper ceiling wall of the storage box 10, a cooler 5 communicating with a refrigerating device (not shown) is arranged. The cooler 5 includes a direct cooling type in which a refrigerant from the refrigeration system is circulated to an internal evaporator, and a refrigerant from the refrigeration system is circulated to an evaporator in a brine tank to cool brine in the tank. However, there is an indirect cooling type in which this brine is circulated in a heat exchanger. Whichever type is adopted, in the cooler 5 of the illustrated example, it is surrounded by a cooling duct 6 that opens to the left, and a blower fan 8 provided in the right opening 7 of the duct 6 allows the air in the refrigerator to flow from the left side of the duct. After being sucked and brought into contact with the cooler 5 to form cool air, it is blown out from the opening 7 and forcedly circulates in the space 9.

That is, in the space 9, the cold air blown out by the blower fan 8 circulates as indicated by the arrow, and cools the storage box 10 made of a good heat conductor. As a result, the food material (not shown) stored in the storage box 10 through the wall surface forming the storage box 10.
Is cooled. Also, on the inner surface of the heat insulating door 12,
As shown in FIG. 5, a duct body 14 that is opened vertically is provided, and when the door is closed, cold air is circulated in the duct body 14 so that the duct body 14 itself functions as a cooling unit to promote cooling in the refrigerator. Is configured to let.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-described refrigerator having the double structure, the cool air that is blown by the blower fan 8 flows along the upper surface → the right side surface → the lower surface → the left side surface of the storage box 10, as shown in FIG. And circulates to cool the storage box 10. At this time, before the position where the cooler 5 is disposed, part of the cool air that is blown by the blower fan 8 flows down on the front and rear sides of the storage box 10, but below the position where the cooler 5 is disposed. At present, almost no cold air circulates on the front side and the rear side of the storage box 10. Therefore, it is difficult to uniformly cool the whole of the storage box 10, and it takes a considerable time to cool the inside of the storage until the set temperature (the storage temperature of the food material) is reached, and accordingly, the power consumption increases. there were. Further, there is also a problem that due to partial cooling of the storage box 10, a temperature difference occurs in the refrigerator, and some foodstuffs deteriorate in freshness at an early stage.

Furthermore, as described above, the heat insulating door 12 that opens and closes the opening 1a of the heat insulating box 1 has a duct body functioning as a cooling unit.
Although 14 is provided, almost no cool air circulates in the duct body 14 of the heat insulating door 12 provided below the position where the cooler 5 is provided, so that the desired cooling effect cannot be expected. Further, because the cool air does not flow down inside the opening 1a of the storage box 1, the air curtain effect by blowing out the cool air when the heat insulating door 12 is opened cannot be used, and the heat of the outside air enters. It is also pointed out that the temperature inside the store rises and the freshness of the stored foods deteriorates.

Therefore, as shown in FIG. 6, the deflection plate 16 is inclinedly arranged on the ceiling wall of the storage box 10 in front of the blowing fan 8 in the blowing direction,
It has been proposed that a part of the cool air sent from the blower fan 8 collides with the deflection plate 16 and the flow direction is changed to circulate the cool air to the front and rear surfaces of the storage box 10. However, in this case, it is pointed out that the number of parts is increased and the number of assembling steps is increased to increase the manufacturing cost.

SUMMARY OF THE INVENTION The present invention has been proposed in order to suitably solve the above-mentioned drawbacks existing in the refrigerator having the double structure in which the storage box is housed in the heat-insulating box body described above. It is an object of the present invention to provide a cold air dispersion structure having a simple structure capable of rapidly cooling the inside to a set temperature and at the same time achieving uniform temperature inside the refrigerator.

Means for Solving the Problems In order to overcome the above-mentioned problems and preferably achieve an intended purpose, the present invention provides an insulating box body having an opening and a required space inside the insulating box body. A storage box that is provided and has an opening that opens in correspondence with the opening, an insulating door that is openably and closably provided in the opening of the heat insulating box, and a cooler that is provided above the space. In the refrigerator, the ceiling wall of the storage box located in the cool air delivery direction of the cooler is inclined obliquely upward, and a part of the cool air delivered from the cooler is deflected to the front side and the rear side of the space. It is characterized in that a cold air deflecting portion is formed.

[Embodiment] Next, a cold air distribution structure of a refrigerator according to the present invention will be described below with reference to the accompanying drawings by way of a preferred embodiment. The same members as those already described with reference to FIGS. 4 and 5 are designated by the same reference numerals. First
FIG. 1 is a perspective view showing a horizontal refrigerator in which a cold air distribution structure according to a preferred embodiment of the present invention is adopted in a perspective state, FIG. 2 is a vertical sectional front view of the refrigerator shown in FIG. 1, and FIG. It is a vertical side view of the refrigerator shown in the figure.

As shown in the figure, a heat insulating box 1 including an outer box 2, an inner box 3 and a heat insulating material 4 filled between the boxes 2 and 3 is provided with a required number of openings 1a on the front surface thereof. A heat insulating door 12 is provided correspondingly to the portion 1a (see FIG. 1). This insulation box 1
A storage box 10 is arranged inside the inner box 3 to hold the inner wall and a required space 9.

On the left side of the inner ceiling wall of the inner box 3, as shown in FIG.
A cooler 5 is arranged via a mounting plate 18, and the cooler 5 is surrounded by a cooling duct 6 whose left side is open. An opening 7 is formed on the right side of the duct 6, and the air inside the refrigerator is sucked from the left side of the duct by a blower duct 8 provided in the opening 7 and is brought into contact with a cooler 5 to cool it, and then the opening 7 is formed. It is configured to blow out from and cool the inside of the refrigerator.

The ceiling wall 11 of the storage box 10 includes a first horizontal portion 11a extending below the cooler 5 in parallel with the ceiling wall of the inner box 3,
A cold air deflecting portion 11b, which is continuously provided on the right end of the first horizontal portion 11a and is bent upward in an inclined manner, and a second extending from the inclined upper end of the cold air deflecting portion 11b in parallel with the ceiling wall of the inner box 3. Horizontal part 11c
Formed from. As shown in FIG. 2, the cold air deflecting portion 11b faces to the right of the position where the cooler 5 is provided, that is, in the forward direction in which the cool air sent by the blower fan 8 is sent.
It functions to block and deflect a part of the flow of the cold air.

In this case, the dimension of the cold air deflecting portion 11b protruding upward from the first horizontal portion 11a is as shown in FIG.
Is set so as to partially block the opening 7 in front of it. As a result, a part of the cool air that is blown by the blower fan 8 hits the cold air deflecting portion 11b and its direction is changed. In addition, a gap that allows circulation of cold air is defined between the cooling duct 6 and the first horizontal portion 11a, and the cold air whose flow direction is deflected, the front side of the storage box 10 passes through this gap. And the rear side is configured to flow down.

Operation of Embodiment According to the cold air distribution structure of the refrigerator according to the embodiment thus configured, when the refrigerator is operated, the cool air cooled by the cooler 5 is blown into the space 9 by the blower fan 8 and is described above. As described above, the storage box 10 is cooled by circulating the storage box 10 from the upper surface to the right side surface to the lower surface to the side surface. In addition, the second horizontal portion 11
From c, cold air also flows down to the front surface side and the rear surface side of the storage box 10 to cool the storage box 10 in the same manner.

Here, a part of the cool air pressure-fed by the blower fan 8 is
As shown in FIG. 2, the cold air deflecting portion 11b formed in the storage box 10
Upon hitting, it flows toward the first horizontal portion 11a. This cold air
The cycle of returning to the cooler 5 again after flowing down the front side and the rear side of the storage box 10 from the gap defined between the cooling duct 6 and the first horizontal portion 11a is repeated. That is, the cold air that has been pressure-fed by the blower fan 8 circulates thoroughly in the space 9 defined between the inner box 3 and the storage box 10 to quickly cool the inside of the storage to the set temperature, and at the same time, store the storage box. 10 Cool the whole evenly.

Further, since the cool air circulates also in the duct body 14 arranged in the heat insulating door 12 located below the cooler 5, it can function as a cooling unit itself, so that the cooling efficiency can be improved. Further, when the heat insulating door 12 is opened, the opening 10a
Since the cool air flows downward from above to exert the air curtain effect, it is possible to prevent a rapid temperature rise due to the entry of heat from the outside air.

In the embodiment, the height dimension of the ceiling wall 11 of the storage box 10 located on the right side of the arrangement position of the cooler 5 is increased,
This also has the advantage of increasing the storage space of the storage box 10.

Effect of the Invention As described above, according to the cold air distribution structure of the refrigerator according to the present invention, the cold air is circulated in the space defined between the storage box and the inner box, so that the inside of the refrigerator can be circulated. It is possible to quickly and uniformly reach the set temperature.
Therefore, it is possible to effectively prevent the freshness of the foodstuffs stored in the storage box from being reduced and to reduce the power consumption. In addition, since the entire storage box is cooled substantially uniformly, there is no difference in temperature in the refrigerator, and the freshness of some food materials is not deteriorated. Further, even when the heat insulating door is frequently opened and closed, the cold air flows downward from the inside of the opening of the heat insulating box from the upper side to the lower side, and the air curtain effect is exerted so that the inside temperature is stable and the temperature suddenly increases. It has many beneficial effects such as prevention of rising.

[Brief description of drawings]

FIG. 1 is a perspective view showing a horizontal refrigerator adopting a cold air distribution structure according to a preferred embodiment of the present invention in a perspective state, FIG. 2 is a vertical sectional front view of the refrigerator shown in FIG. 1, and FIG. FIG. 4 is a vertical sectional side view of the refrigerator shown in FIG. 4, FIG. 4 is a vertical sectional front view of a conventional horizontal refrigerator, FIG. 5 is a vertical sectional side view of the refrigerator shown in FIG. 4, and FIG. It is a principal part longitudinal cross-sectional front view which shows the state which has arrange | positioned the deflection plate on the ceiling wall of the storage box. 1 ... Insulation box, 1a ... Opening 5 ... Cooler, 9 ... Space 10 ... Storage box, 10a ... Opening 11 ... Ceiling wall, 11b ... Cold air deflector 12 ... Insulating door

Claims (1)

[Scope of utility model registration request] 1. An insulating box body (1) having an opening (1a),
A storage box (10) having an opening (10a) which is disposed inside the heat insulating box (1) through a required space (9) and opens correspondingly to the opening (1a); Insulation box (1)
In a refrigerator comprising a heat insulating door (12) openably and closably provided in an opening (1a) of the cooler and a cooler (5) arranged above the space (9), cool air of the cooler (5) is delivered. The ceiling wall (11) of the storage box (10) located in the horizontal direction is inclined obliquely upward so that a part of the cool air sent from the cooler (5) is directed to the front side and the rear side of the space (9). A cold air distribution structure for a refrigerator, characterized in that a cold air deflecting section (11b) for deflecting the air is formed.