JPH09133450A - Showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the air-curtain performance and cooling efficiency by restraining cold-air from escaping from the stream of a cold-air curtain that is blown and formed over the upside of a case of a showcase. SOLUTION: A cold-air circulating duct 6 is formed in an open-top type case main body 3 of a showcase, and a cold-air outlet 7 is located at the upper part on the rear side and a cold-air suction port at the upper part on the front side. Cold-air is blown out from the cold-air outlet 7 toward the cold-air suction port through the cold-air circulating duct 6 to form a cold-air curtain A over the top opening of the showcase. An eave 3c of an outer case 3a is extended from the upper end of the rear side of the case main body 3, and the cold-air outlet 7 is formed between the eave 3c and an inner case 3b. The front end of the eave 3c is covered with a decorative cover 11 and an air deflecting guide 11a protruding downward is formed using the decorative cover 11. The stream of the air curtain A blown out from the cold-air outlet 7 is deflected slightly downward along the slope of the air deflecting guide 11a to diminish the cold-air leakage from the front side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold air circulation type flat open showcase or a dual type showcase constructed in combination with a reach-in type showcase.

[0002]

2. Description of the Related Art First, FIG. 3 shows a general structure of a dual type refrigerating / refrigerating showcase to which the present invention is applied. In the figure, 1 is a closed type reach-in type showcase arranged in the upper stage, 2 is a flat open showcase in the lower stage, and the reach-in type showcase 1 and the flat open showcase 2 are stacked in the upper and lower stages to show a dual type freezing / refrigerating showcase. Is building.

Here, the reach-in type showcase 1 is constructed by equipping a case main body 1b with a door 1a with a glass door 1a in the front thereof with a product display shelf 1c, a cooler 1d, a fan 1e in the refrigerator and the like. There is. On the other hand, the flat open showcase 2 in the lower stage has a cooler 4, an internal fan 5 between an outer box (a case made of a heat insulating panel made of foamed resin) 3a and an inner box 3b of a case body 3 having an open upper surface. A cool air circulation path 6 having a built-in is defined, and a cool air curtain is provided on the upper open surface of the case main body 3 from a cool air outlet 7 opening at the upper rear side to a cool air inlet 8 opening at the upper front side. It is configured as a cold air circulation type showcase that blows out A and keeps the showcase stored in the refrigerator cool.

FIG. 2 shows a detailed conventional structure of the cold air outlet 7 described above. That is, the cold air outlet 8 is provided with the eaves portion 3 of the outer box 3 which is pushed forward from the upper end of the rear portion of the case body 3.
An air flow direction vane 9 for rectification is installed at an inner corner portion of the cold air outlet 7 that is open between the c and the inner box 3b protruding to the lower surface side thereof. The front end of the eaves portion 3c of the outer box is covered with a decorative cover 11 laid between the front lower portion of the reach-in type showcase 1 and also as a canopy for mounting the interior lighting fluorescent lamp 10. It is being appreciated.

With such a structure, the cold air circulation ventilation path 6 inside the refrigerator
The cold airflow that has exchanged heat with the cooler 4 through the
While being rectified by, the cold air curtain A is blown out from the cold air outlet 7 toward the cold air inlet 8 on the front side in a substantially horizontal direction.

[0006]

By the way, in the dual type showcase constructed in combination with the reach-in type showcase 1 as described above, the depth dimension of the flat open showcases 2 arranged on the lower stage side becomes large, The distance between the cool air outlet 7 opening to the upper part on the back side and the cool air inlet 8 opening to the front side becomes large. For this reason, with the conventional structure shown in FIG. 2, the cold air curtain A formed by being blown out to the upper open surface of the case body 3 through the cool air outlet 7 flows the outside air surrounding the showcase (air by air conditioning in the store). Turbulence occurs in the laminar flow due to the influence of the flow) and the air flow spreads. For this reason, the heat-shielding performance of the air curtain is deteriorated, and a part of the air curtain cool airflow is not collected by the front-side cold air suction port 8 but goes over the front portion and leaks to the outside of the refrigerator, and this cold air leakage. The heat loss causes the cooling efficiency of the showcase to decrease.

The present invention has been made in view of the above points, and by adding a simple wind direction means to the cool air outlet, the cool air leak to the outside of the storage is well suppressed, and the performance of the cool air curtain, and An object of the present invention is to provide a showcase capable of improving cooling efficiency.

[0008]

In order to achieve the above object, according to the present invention, a wind direction guide for deflecting the blowing direction of the cool air curtain in a diagonally downward direction is provided in front of the cool air blowing port. It is assumed that the guide is formed by bulging a part of the decorative cover, which covers the tip of the eaves portion of the outer box, which protrudes to the upper surface of the rear portion of the case body, toward the inside of the refrigerator.

With the above construction, the airflow of the cool air curtain blown forward from the cold air outlet, especially the airflow of the upper layer portion, is deflected so as to flow obliquely downward along the slope of the wind direction guide projecting forward. It Therefore, in the cool air curtain, the upward spread of the air flow is suppressed, and the cool air curtain can be efficiently collected in the cool air suction port on the front side while maintaining a good laminar flow state. As a result, the amount of cold air leakage is reduced and the showcase cooling efficiency is improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete embodiment of the present invention will be described below with reference to FIG. In FIG. 1, the same members as those in FIG. 2 are designated by the same reference numerals. That is, in the configuration of the illustrated embodiment, with respect to the decorative cover 11 laid so as to surround the front end portion of the eaves portion (heat insulating panel) 3c that protrudes forward from the rear upper end of the case body 3,
A wind direction guide portion 11a having a triangular cross section is formed by bulging a part of the plate surface from the lower surface of the eaves portion 3c toward the inside (downward) of the case body 3 so as to bulge in front of the cool air outlet 7. There is.

With such a structure, the air flow of the cool air curtain A blown forward from the cool air outlet 7 is formed on the inclined surface of the wind direction guide portion 11a which is swelled obliquely downward from the lower surface of the tip of the eaves portion 3c. Deflected along. As a result, the cool air curtain A suppresses the upward spread of the air flow. As a result, the cold air suction port 8 (see FIG. 3) on the front side can be efficiently sucked and collected, and the amount of cold air leaking over the front portion and flowing out to the outside of the refrigerator can be reduced. Moreover, the wind direction guide portion 11a can be easily formed by sheet metal working only by slightly changing the design of the shape of the decorative cover 11, which does not increase the manufacturing cost.

In the illustrated embodiment, the flat open showcase of the dual type showcase is described, but it goes without saying that it can be applied to a single wall flat open showcase, a double-sided flat open showcase, and the like.

[0013]

As described above, according to the present invention, the wind direction guide for deflecting the blowing direction of the cool air curtain obliquely downward is provided in front of the cool air outlet, so that the cool air blowing in the conventional showcase is achieved. Compared with the structure of the outlet, the amount of cold air leaking out of the cold air curtain formed on the open upper surface of the case body to the outside is greatly reduced, and the showcase cooling efficiency is improved. Moreover, by adopting the configuration of claim 2, the wind direction guide can be easily formed without increasing the manufacturing cost.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a structure near a cool air outlet of a flat open showcase according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a structure near a conventional cold air outlet corresponding to FIG.

FIG. 3 is a schematic configuration diagram of an entire dual type showcase to which the present invention is applied.

[Explanation of symbols]

 1 Reach-in type showcase 2 Flat type open showcase 3 Case body 3a Outer case 3b Inner case 3c Eaves 4 Cooler 5 Inside fan 6 Cold air circulation air duct 7 Cold air outlet 8 Cold air intake 9 Wind direction vane 11 Makeup cover 11a Wind direction Guide A Cold air curtain

Claims (2)

[Claims] 1. A cool air circulation air passage having a cooler and a fan is defined between an outer box and an inner box of an open top type case body.
It is a showcase in which a cool air curtain is blown off from the cool air outlet on the rear side upper part toward the cool air intake port on the upper front side through the cold air circulation path to the open upper surface of the case body, and the cool air outlet port of the case body is In the partition between the eaves and the inner box of the outer box that protrudes forward from the rear upper end, the wind direction guide that deflects the blowing direction of the cool air curtain obliquely downward is provided in front of the cold air outlet. A showcase characterized by that. 2. The showcase according to claim 1, wherein the wind direction guide is formed by bulging a part of a decorative cover, which covers the tip of the eaves of the outer box protruding toward the rear upper surface of the case body, toward the inside of the refrigerator. A showcase characterized by that.