JP2847989B2 - Air inlet device for cold air circulation type open showcase - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool air circulation type open showcase provided with a main body case having a substantially U-shaped cross section having a product take-out opening on the upper surface or the front surface. The present invention relates to an air inlet device which forms a suction port facing an opening and which is provided with a grill plate having a large number of ventilation holes in the suction port.

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a known open showcase of this type. In the figure, a main case 1 of an open showcase is an outer box 2 made of a heat insulating wall.
And an inner box 3. The upper box has a substantially U-shaped cross section with an opening 1 a for taking out a product. The inner box 4 has an inner box 4 inside and an inner box 4 between the outer box 2 and the inner box 3. The cooling air circulation path 5 is formed. The cold air circulation path 5 has both ends open with the opening 1a interposed therebetween, and one end forms an air outlet 5a, and the other end forms an air inlet 5b constituting the air inlet device 6. The air suction device 6 includes a grill plate 7 formed by extending the front plate 31 of the inner box 3 and bending the extended portion horizontally and providing a large number of ventilation holes 7a in the horizontal portion; A transparent plate 8 and a fence 9 that stand upright so that the ventilation holes 7a are not blocked by the goods and the belongings of the customer, etc., which are stored in the storage 4 before and after that. A fan 11 and a cooler 12 are provided in the cool air circulation path 5.

[0003] In the open showcase, goods are stored and displayed in a refrigerator 4. Thus, the air in the refrigerator is sucked into the cool air circulation path 5 from the ventilation hole 7a of the suction port 5b by the fan 11, and is cooled by the cooler 12 to become the cooling air, and is blown out from the outlet 5a to the opening 1a. A cold air curtain 13 for shielding the inside 4 from outside air is formed, and the inside 4 is cooled and circulated.

[0004]

In the conventional open showcase, when foreign matter such as coins is dropped between the transparent plate 8 and the fence 9, the foreign matter passes through the suction port 5b and enters the cool air circulation path 5 as it is. When dropped, the fan 11 and the cooler 12 sometimes break down, and it is necessary to remove the goods in the refrigerator and the bottom plate of the inner box to remove the fan 11 and the cooler 12, which is extremely troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an air inlet device which can prevent foreign matters dropped between a transparent plate and a fence from falling into a cool air circulation path in a cool air circulation type open showcase. .

[0006]

According to the present invention, there is provided, in accordance with the present invention, a main body case having a substantially U-shaped cross section having a product take-out opening on one side thereof. One end of a cool air circulation path formed between the inner box and the opening forms a suction opening facing the opening, and a cool air circulation type open showcase provided with a grill plate having a large number of ventilation holes at the suction opening. In the air inlet device, the grill plate is formed to have a substantially Z-shaped cross section, and the ventilation hole is opened in a Z-shaped vertical portion.

[0007]

The grill plate has an intake hole in a vertical portion, and has no hole penetrating vertically through a horizontal plane. Therefore, foreign matter dropped between the transparent plate and the fence is received by the horizontal portion of the grill plate,
Falling into the cool air circulation path is prevented.

[0008]

FIG. 1 shows an embodiment of the present invention.
4 and FIG. 4 are denoted by the same reference numerals.
In FIG. 1, a grill plate 7 of an air inlet device 6 is formed to have a substantially Z-shaped cross section, and is attached with a horizontal portion 7c connected to the upper end of a vertical portion 7b facing forward, and a rear horizontal portion 7d.
Is connected to the front plate 31 of the inner box 3 (FIG. 3). The vertical portion 7b is provided with a small rising portion 7e at the lower edge, and a large number of vent holes 7a are opened side by side. Then, the upper surface of the suction port 5b formed at one end of the cool air circulation path 5 is formed. Reference numeral 15 denotes an interval plate for maintaining the cool air circulation path 5 at a predetermined interval, and reference numeral 16 denotes a support plate for detachably holding the fence 9 between the cool air circulation path 5 and the front plate 31 of the inner box.

In the above-described configuration, the air in the refrigerator is provided with the ventilation holes 7.
As in the case of the conventional open showcase, the air is sucked into the cool air circulation path 5, and circulates as cooling air to cool the inside of the refrigerator. On the other hand, when foreign matter falls between the transparent plate 8 and the fence 9, the foreign matter is received by the horizontal portions 7c and 7d of the grill plate 7, and is prevented from falling into the cool air circulation path 5.
In particular, even the foreign matter that easily rolls is prevented from passing through the ventilation hole 7a by the rising portion 7e. Horizontal parts 7c, 7
The foreign matter on d is easily removed once the fence 9 is removed. Thus, the foreign matter does not damage the fan or the cooler, and no extra work is required for removing the foreign matter. Further, in the conventional air inlet device, the ventilation hole 7a and the cool air circulation path 5 behind the ventilation hole 7a can be clearly seen from the front, so that there is a concern that the appearance of the open showcase may be deteriorated. Since the horizontal portion 7c on the high side is located on the front side, the ventilation hole 7a and the cool air circulation path 5 are not noticeable to the customer, and the appearance of the open showcase is improved.

FIG. 2 shows another embodiment of the present invention. In this embodiment, the grill plate 7 is divided into two front and rear parts.
A front plate 7A on a flat plate supported by the outer case 2 and protruding toward the center of the suction opening 5b; and a rear plate 7B connected to the front plate 31 of the inner case and projecting toward the center of the suction opening 5b at a position lower than the front plate 7A. It is constituted by and. The front plate 7A is provided slightly forward and downward, and the rear plate 7A is provided slightly backward and downward, and both are formed to have a slightly overlapping length with their front ends separated by a height difference. Thus, the gap between the front ends of the grill plate 7 forms a ventilation hole 7a due to the height difference between the front plate 7A and the rear plate 7B. Also in this embodiment, the foreign matter that has fallen between the transparent plate 8 and the fence 9 is the front plate 7A or the rear plate 7 of the grill plate 7.
The effect similar to that of the above-described embodiment can be obtained.

[0011]

According to the present invention, a cool air circulation path is provided in a main body case having a substantially U-shaped cross section and having a product take-out opening on one surface, and formed between an outer box and an inner box of the main body case. While one end of the opening faces the opening and forms a suction port,
In a cold air circulation type open showcase air suction device provided with a grill plate having a number of ventilation holes at the suction port, the grill plate is formed to have a substantially Z-shaped cross section, and the ventilation hole is formed at a Z-shaped vertical portion. The inside air is sucked into the cool air circulation path through the ventilation hole formed in the substantially vertical surface of the grill plate, and circulates as cooling air to cool the inside of the refrigerator. On the other hand, when a foreign object is dropped directly above the suction port, the foreign object is received by the grill plate and is easily removed. Therefore, various inconveniences caused by the foreign matter falling into the cool air circulation path can be solved.

[Brief description of the drawings]

FIG. 1 is a sectional view of an air inlet device showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of an air inlet device showing another embodiment of the present invention.

FIG. 3 is a cross-sectional view of a cold air circulation type open showcase provided with a conventional air suction device.

FIG. 4 is a plan view of the air inlet device of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 5 Cold air circulation path 5b Suction port 6 Air suction port apparatus 7 Grill plate 7a Vent hole 7e Rise part 7A Front plate 7B Rear plate

Claims (4)

(57) [Claims] 1. A cold air circulation path formed between an outer case and an inner case of a main body case having a substantially U-shaped cross section having a product take-out opening on one side, and one end of the cool air circulation path formed in the main case. An air inlet device of a cool air circulation type open showcase comprising a grill plate having a large number of ventilation holes in a cold air circulation path near the suction port, forming a suction port facing the suction port,
An air inlet device for a cold air circulation type open showcase, wherein the grill plate has a substantially Z-shaped cross section and the ventilation hole is opened in a vertical portion of the Z shape. 2. The air inlet device according to claim 1, wherein
An air inlet device for a cold air circulation type open showcase provided with a rising portion at the lower edge of a ventilation hole that opens in a vertical portion of a grill plate. 3. The air inlet device according to claim 1, wherein
An air inlet device for a cool air circulation type open showcase in which the grill plate is installed with the horizontal portion connected to the upper end of the vertical portion of the grill plate having a substantially Z-shaped cross section facing forward. 4. A cold air circulation passage formed between an outer box and an inner box of the main body case and having a substantially U-shaped cross section and having an opening for taking out a product on one side thereof. The grill plate is divided into two parts in an air inlet device of a cool air circulation type open showcase comprising a grill plate having a vent hole in a cool air circulation path near the suction port. A flat front plate protruded and supported rearward on the outer box, and a flat rear plate protruded and supported at a lower position than the front plate on the inner box, An air inlet for a cool air circulation type open showcase, wherein a gap formed by a difference in height between the front plate and the rear plate is formed as a vent.