JPH06221741A - Cold air circulating structure of cold showcase - Google Patents

Abstract

PURPOSE:To provide a cold air circulating structure of a cold showcase, capable of improving cooling efficiency by forming an air curtain sufficient for all corners of a display rack in the cold showcase, and uniformly circulating only air which has passed through coolers in a floor inner part by means of a ventila tion fans. CONSTITUTION:A matching part formed by diagonally cutting the ends of a honeycomb-like straightening member 10 and matching them with each other is housed in a forward slanted cold air blowing port 9 positioncd in a corner part 3a of a ceiling part 3, and upper and lower parts are formed thin by cutting largely the upstream side of the matching part. Thereby, when a trsightening member is housed in the frontward slanted cold air blowing port 9, the blockage of a straightening hold 10b in the matching part can be prevented, moreover an air curtain A sufficient for all corners of a display rack can be formed. Moreover, a plurality of ventilation fans 12 arranged on the downstream side of coolers 11 in a floor part 5 is partitioned by a partition plate 15 so as to be made independent respectively. And only air which has passed through the coolers 11 is circulated in the duct by straightening effect of the partition plate.

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 structure of a refrigerating showcase having two or three openings, for example, an around showcase, and more particularly to a cold air blowing structure at a corner of a ceiling or a corner of a floor. The present invention relates to a cold air circulation structure of a refrigerating showcase that enables efficient circulation of cold air by improving a cold air suction structure.

[0002]

2. Description of the Related Art In food stores such as supermarkets, around-showcases having two or three openings are often used for displaying refrigerated foods and fresh foods. In most cases, this around showcase is connected to a direct showcase to be formed into a rectangular shape, and is used inside a store so that displayed products can be taken out from any of the four sides.

FIG. 6 shows an open type showcase structure in which an around showcase 51 is connected to a direct showcase 52 to form a rectangular shape. A plurality of blower fans are used from a suction port 54 of a floor 53. Inhaled air,
It cools by the cooler arranged on the upstream side respectively, sends it to the ceiling part 55 through the back duct, rectifies it with the honeycomb-shaped rectifying member provided on the ceiling part 55, and blows it out forwardly 5
Cold air is blown from 6 to form the air curtain A, and the products displayed on the display shelf 57 and the floor 53 are cooled.

A honeycomb-shaped straightening member 5 provided at a corner portion 55a of a ceiling portion of the conventional around showcase 51.
As shown in detail in FIG. 7, 8 is housed in the cold air outlet 56 that is inclined forward of the ceiling corner 55a by cutting the end diagonally and abutting the cut surface 58a. .

Further, as shown in detail in FIG. 8, a cooler 59 is provided in the vicinity of the cool air suction port 54 inside the floor 53 of this conventional around showcase, and a blower fan 60 is provided downstream thereof. Is provided and the air taken in from the cool air suction port 54 is cooled by the cooler 59 before the blower fan 6
0 sends it to the back duct 61. The sent cool air is rectified by the honeycomb rectifying member 58 of the ceiling portion 55, and is blown obliquely forward from the outlet 56 toward the inlet 54 of the floor to form the air curtain A.

[0006]

In the conventional cold air outlet structure of the corner portion of the ceiling portion, which is housed in the air outlet 56, the air outlet 56 is forwardly moved. Since it is inclined, the rectifying hole 58b of the butt portion of the rectifying member 58 is closed, cold air cannot be blown out from the butt portion, and a sufficient air curtain A is formed over the entire corner portion of the display shelf. There was a problem that it could not be done.

Further, in the case of the conventional structure in which the cooler 59 is provided upstream of the blower fan 60 inside the floor, it is impossible for the blower fan 60 to evenly circulate only the air passing through the cooler 59. However, due to the interference between the blower fans 60, 60, it is easy to suck in the air having a relatively high temperature that does not pass through the coolers 59, 59, and the cooling performance is deteriorated accordingly.

The present invention has been made in view of the above circumstances. A first object of the present invention is to provide a cold air circulation structure for a refrigerated showcase capable of forming a sufficient air curtain over the entire corner portion of a display shelf of the refrigerated showcase. To provide. A second object of the present invention is to provide a cold air circulation structure of a refrigerating showcase in which only the air that has passed through the cooler inside the floor is uniformly circulated by a blower fan to improve the cooling performance.

[0009]

The cold air circulation structure of a refrigerating showcase according to the present invention has the following constitution in order to achieve the above object. First, the invention according to claim 1 has an opening on at least two sides, and the air sucked by a blower fan from the inlet of the floor is cooled by a cooler and then sent to the ceiling through a rear duct. In a refrigerating showcase that cools products on a display shelf by rectifying by a honeycomb rectifying member provided on the ceiling and blowing out from a blowout port that is inclined forward, cool air at the corners of the ceiling. It is characterized in that the butting portion of the honeycomb-shaped straightening member provided at the air outlet is formed with a thin notch in the vertical direction. By forming the butt portion of the rectifying member thin, it is possible to prevent the rectifying hole from being blocked as much as possible, and it is possible to form a sufficient air curtain even in the entire corner portion of the display shelf.

Further, the invention according to claim 2 is characterized in that a plurality of blower fans arranged on the downstream side of the cooler of the floor portion are partitioned by partition plates to be independent from each other. As a result, the partition plate has a rectifying effect, and only the air that has passed through the cooler can be circulated.

Further, according to the invention of claim 3, at the same time as forming a thin notch in the vertical direction at the butting portion of the honeycomb-shaped rectifying member provided in the cold air outlet that is inclined forward of the ceiling corner portion, at the same time, A plurality of air-blowing fans arranged on the downstream side of the cooler of the floor section are partitioned by partition plates to be independent from each other, thereby further improving the efficiency of cold air circulation.

[0012]

[Operation] By forming a thin notch in the up-down direction, the abutting part of the honeycomb rectifying member provided at the cold air outlet that is inclined forward of the corner of the ceiling part can prevent the rectifying hole from being blocked as much as possible. The cool air that has passed through the duct can be spread smoothly from the corner of the ceiling to the entire corner of each display shelf, and an appropriate air curtain can be formed at the corner.
This prevents the air curtain from breaking,
Since warm outside air does not enter the display shelf side, the load on the case is reduced, the cooling performance is improved, and the internal temperature can be made uniform. As a result, the frost on the cooler becomes even, and no frost remains when defrosting. Moreover, it is possible to prevent dew condensation on the ceiling and back plate due to the invasion of outside air.
Furthermore, since the amount of frost formed on the cooler is reduced, the number of times of defrosting can be reduced.

Further, since the plurality of blower fans arranged on the downstream side of the cooler of the floor section are partitioned by partition plates to be independent from each other, the performance of the blower fans can be maximized without interfering with each other. You can Moreover, the partition plate plays the role of a straightening plate, and only the air that has passed through the cooler can be circulated evenly by the blower fan, and other warm air does not mix in the circulation of cold air, so the cooling performance is also improved. It is also possible to reduce the amount of frost formed on the cooler.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing the entire structure of an open type refrigerating showcase in which an around showcase is connected to a direct showcase to form a rectangular shape, and FIG. 2 is a side view showing a cold air outlet structure of a ceiling portion. FIG. 5 is an explanatory view showing a butt structure of the rectifying members at the corners of the ceiling, FIG. 4 is a perspective view showing a structure inside the floor of the around showcase, FIG.
FIG. 3 is a plan view showing a cold air circulation structure inside the floor.

First, the around showcase 1 of this embodiment is arranged so as to be connected to both sides of the direct showcase 2 to form a rectangular open type showcase as a whole, and is installed in the center of the store. However, the displayed products can be taken out from any of the four sides.

This around showcase 1 is opened on three sides, and a casing is integrally formed by an upper ceiling portion 3, a back portion 4 covering the back surface, and a lower floor portion 5, and these portions and the internal panel 6 are integrated. A duct 7 for circulating cold air is formed between them, and a plurality of stages of product display shelves 8 are provided inside the refrigerator.

At the tip of the ceiling portion 3, a cold air outlet 9 is formed on the top plate of the inner panel 6 so as to incline slightly forward, and the cool air is directed toward the suction inlet 13 of the floor portion 5 there. A honeycomb rectifying member 10 that rectifies and blows out diagonally forward is housed. Inside the floor 5, a plurality of coolers 11 are arranged on the upstream side, and a plurality of blower fans 12 are arranged on the downstream side.

Then, the air sucked by the blower fan 12 from the suction port 13 of the floor 5 is cooled through the cooler 11 on the upstream side thereof and sent from the rear duct 7 to the ceiling part 3 and provided on the ceiling part 3. In addition, the air-conditioning member 10 is rectified by the honeycomb-shaped rectifying member 10 and cool air is blown obliquely forward from the air outlet 9 to form the air curtain A. I am trying to do it.

A honeycomb-shaped straightening member 1 provided at the air outlet 9 of the corner 3a of the ceiling portion of the around showcase 1.
As shown in detail in FIG. 2 and FIG. 3, 0 is thinly formed in the vertical direction by cutting the end portion obliquely and abutting the cut surface 10a, and notching the upstream side largely in a certain range from the abutting portion. I am doing it. By thus reducing the thickness of the rectifying member 10 housed in the corner portion 3a of the ceiling portion within a certain range from the abutting portion, the overlapping of the abutting portion is minimized, and the air outlet 9 is inclined forward. Even when it is stored, the flow regulating hole 10b is prevented from being closed, the cool air can be blown out smoothly, and the air curtain A can be formed at the corners of the display shelves 8 at each stage. Therefore, the break of the air curtain A does not occur, and warm outside air does not enter the display shelf 8 side, so that the cooling performance can be improved and the internal temperature can be made uniform.

Further, as shown in detail in FIGS. 4 and 5, a plurality of coolers 11 are provided in the vicinity of the suction port 13 inside the floor 5 of the around showcase 1.
A plurality of blower fans 12 are provided on the downstream side, and as shown by the arrow, the air taken in from the suction port 13 is cooled by the cooler 11 and then sent to the rear duct 7 by the blower fan 12, and Cooling air is circulated by rectifying the air with the honeycomb-shaped rectifying member 10 and blowing the rectified member 10 toward the suction port 13 from the blowout port 9.

A partition plate 1 is provided between the blower fans 12.
5 are provided so that each blower fan 12 is independent so as not to interfere with each other. Therefore, the performance of each blower fan 12 can be maximized, and the partition plate 15 functions as a straightening plate so that only the air that has passed through the cooler 11 is circulated evenly by the blower fan 12. Therefore, heat exchange efficiency can be improved. In addition, since warm air that does not pass through the cooler 11 is not mixed into the circulation of the cool air, it is possible to contribute to the improvement of the cooling performance and reduce the amount of frost formed on the cooler 11.

As described above, according to this embodiment, the air curtain A can be formed over the entire corner of the display shelf 8 of the around showcase 1, and at the same time, only the air passing through the cooler 11 is blown by the fan 12. Since it is possible to circulate in, it is possible to prevent the entry of warm outside air as much as possible, and it is possible to perform uniform and efficient cooling of the interior.

In this embodiment, an example of an around showcase having three openings is shown, but it goes without saying that the same can be applied to an around showcase having two openings and other refrigerating showcases.

[0024]

Since the cold air circulation structure of the refrigerating showcase of the present invention is constructed as described above, it has the following special effects.

First, according to the first aspect of the present invention, since the abutting portion of the honeycomb-shaped rectifying member provided at the cold air outlet that is inclined forward of the corner portion of the ceiling portion is formed with a thin notch in the vertical direction, The holes can be prevented from being blocked, and the cool air that has passed through the rear duct can be smoothly spread from the corners of the ceiling to the entire corners of each display shelf, and an appropriate air curtain can be formed at the corners. It will be possible. As a result, the break of the air curtain does not occur, and warm outside air does not enter the display shelf side, so the load on the case is reduced, the operating time of the refrigerator can be reduced, and power consumption can be reduced. Further, by preventing the invasion of warm outside air, the cooling performance can be improved and the inside temperature can be made uniform. As a result, the frost on the cooler becomes even, and no frost remains when defrosting. Moreover,
It is possible to prevent dew condensation on the ceiling or the back plate due to the invasion of outside air, and the amount of frost formed on the cooler itself is reduced, so that the number of defrosting times can be reduced.

Further, according to the second aspect of the present invention, the plurality of blower fans arranged on the downstream side of the cooler of the floor are partitioned by partition plates to be independent from each other, so that the blower fans do not interfere with each other. You can maximize the performance of. Moreover, since the partition plate functions as a straightening plate and only the air that has passed through the cooler can be circulated evenly by the blower fan, heat exchange efficiency is improved and the horsepower required for the refrigerator can be reduced. Moreover, since the warm air that does not pass through the cooler does not mix in the circulation of the cool air, it is possible to similarly improve the cooling performance and reduce the amount of frost formed on the cooler.

According to the third aspect of the present invention, the abutting portion of the honeycomb-shaped rectifying member provided at the cold air outlet inclined forward of the corner portion of the ceiling portion is formed with a thin notch in the vertical direction, and Since a plurality of air-blowing fans arranged on the downstream side of the cooler of the floor part are partitioned by partition plates to be independent from each other, all the effects of the above-mentioned claims 1 and 2 can be obtained, and a more efficient cold air circulation structure is provided. Can be

[Brief description of drawings]

FIG. 1 is a perspective view showing the entire structure of an open type refrigerated showcase in which the around showcase of the present invention is connected to a direct showcase to form a rectangular shape.

FIG. 2 is a side view showing the structure of the cool air outlet of the ceiling of the around showcase.

FIG. 3 is an explanatory view showing a butt structure of the rectification members at the corners of the ceiling portion.

FIG. 4 is a perspective view showing the structure of the inside of the floor.

FIG. 5 is a plan view showing a cold air circulation structure inside the floor.

FIG. 6 is a perspective view showing the entire structure of an open type refrigerated showcase in which a conventional around showcase is connected to a direct showcase and formed into a rectangular shape.

FIG. 7 is an explanatory view showing a structure for abutting rectifying members at a corner portion of a ceiling portion in a conventional around showcase.

FIG. 8 is a perspective view showing a structure inside a floor of a conventional around showcase.

[Explanation of symbols]

 1 Around showcase 2 Direct showcase 3 Ceiling part 4 Rear part 5 Floor part 6 Internal panel 7 Duct 8 Display shelf 9 Cold air outlet 10 Honeycomb rectifying member 11 Cooler 12 Blower fan 13 Cold air inlet 14 Product 15 Partition plate A air curtain

Claims (3)

[Claims] 1. At least two openings are provided, and the air sucked by a blower fan from a suction port of the floor is cooled by a cooler and then sent to the ceiling through a rear duct to be installed on the ceiling. In a refrigerating showcase that forms an air curtain by blowing out from a blowout port that is inclined forward through a honeycomb-shaped straightening member, in a refrigerating showcase that cools a product on a display shelf, a honeycomb-shaped straightening member provided in the corner portion of the ceiling part Butt
A cold air circulation structure for a refrigerated showcase, which is characterized by thin cutouts in the vertical direction. 2. The ceiling, which has at least two openings and which is sucked by a plurality of blower fans from the inlet of the floor, is cooled by coolers respectively arranged on the upstream side, and is passed through the rear duct to the ceiling. In a refrigerating showcase that cools the goods on the display shelf by blowing air from the air outlet through the honeycomb-shaped rectifying member provided on the ceiling to cool the goods on the display shelf, to the cooler downstream side of the floor. A cool air circulation structure for a refrigerating showcase, characterized in that a plurality of arranged ventilation fans are separated by partition plates to make them independent from each other. 3. The ceiling, which has at least two openings and which is sucked by a plurality of blower fans from the suction port of the floor, is cooled by coolers respectively arranged on the upstream side, and is passed through the rear duct to the ceiling. In a refrigerating showcase for cooling goods on display shelves, the corners of the ceiling part are sent to a display section and are blown out from a blowout port inclined forward through a honeycomb-shaped rectifying member provided on the ceiling section to cool the goods on the display shelf. The rectifying member of the honeycomb-shaped rectifying member provided in the above is formed with a thin notch in the up-down direction, and a plurality of blower fans arranged on the downstream side of the cooler of the floor part are partitioned by partition plates to be independent from each other. The cold air circulation structure of the refrigerated showcase, which is characterized by that.