JPH01225882A - Refrigerating showcase - Google Patents

Abstract

PURPOSE:To quickly and evenly deliver the cold air down to the lowermost shelf so as to uniformly and efficiently cool the interior space by disposing an air passage hole in the center of respective shelves of a rotary showcase shelf assembly except for the lowermost shelf, and forming an annular cold air guide rib around the rim of the air passage holes. CONSTITUTION:A rotary showcase shelf assembly 15 disposed inside a showcase unit 1 rotates around the rotary axis 17 and has circular shelves 16 which are evenly spaced vertically. Except for the lowermost shelf, a circular air passage hole 19 is disposed in the center of the respective shelves, and an annular cold air guide rib 20 is formed around the rim of the air passage hole 19. Because of this, the cold air delivered from the cold air outlet 8 directly downwardly can easily reach the lowermost shelf through the air passage holes 19. Since the cold air can evenly flow down to the lowermost shelf, the interior space of the showcase can be uniformly and efficiently cooled.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a refrigerated showcase that enables efficient cooling by evenly circulating cold air inside the refrigerator.

(b) Conventional technology The entire circumference is covered with glass, and there is a rotating display shelf inside.
Refrigerated showcases are known in which the display shelves are rotated until the desired product is on the door surface, and the door is opened to take out the product.
It is stated in No. 2.

In the refrigerated showcase described in this publication,
A cooler with a drain pan and a circulation blower are installed at the top of the showcase, and a compressor, condenser, etc. are installed in the machine room at the bottom, and the cold air cooled by the cooler is circulated inside the showcase by a circulation blower. It is designed to circulate and cool the products on the rotating display shelves.

(C) Problems to be Solved by the Invention However, in the conventional refrigerated showcase shown in this publication, after cooling the products on the top shelf of the rotating display shelf, the cold air flows between the outer periphery of the shelf and the display case. The flow of cold air flows around the next shelf through the gap with the inner surface of the case, then descends to the column below and reaches the lowest shelf. Therefore, even if the same cold air is used, the lower the item, the warmer it becomes, resulting in the inconvenience that the items on the top shelf are cooled best, and the items on the bottom shelf are not cooled sufficiently.

The present invention was developed in view of the above points, and it establishes a cold air circulation path in which the cold air remains at a low temperature, reaches each shelf, and is collected back into the cooler, so that the inside of the refrigerator is uniform. To provide a refrigerated showcase that can be cooled efficiently and efficiently.

(d) Means for Solving the Problems The refrigerated showcase of the present invention is provided with a cold air outlet equipped with a rectifier that directs the discharged cold air directly downward in the center of the upper part of the showcase body, making it easier to discharge the cold air. A circular air vent is provided in the center of each type of rotating display shelf except for the bottom shelf, and a cold air guide tube wall is formed around the periphery of this vent so that the display shelf can be lowered. .

In addition, the present invention provides that the cold air, whose temperature has increased after reaching each shelf through the ventilation holes and cooling the products, rises along the entire circumference of the showcase and returns as a return flow.
A cold air suction opening is installed in the upper peripheral wall of the showcase body, and a cold air outlet is installed in the center of the showcase body so that the air flows to the cooler placed above the showcase body. A plurality of coolers are provided between the outer periphery of a top plate equipped with a cooling fan, and each of the coolers is placed within the flow of cold air that is sucked in through the suction opening and heads toward the cold air outlet in the center of the top plate. It is.

Furthermore, the present invention has a showcase main body that is transparent on each side and has a hexahedral shape with three doors arranged on every other side, and three coolers are arranged in the upper part of the interior of the showcase main body on the side facing each layer. In addition, a hexagonal top plate with a recess on the top surface to receive the drain water from each cooler, a cold air circulation fan and a cold air discharge port is installed in the center, and the three sides of this top plate are and the upper circumferential wall of the showcase body, three cold air suction openings are formed so that each opening is located outside of each of the coolers.

The present invention provides the refrigerated showcase having a hexahedral shape as described above, in which the drain water receptacle on the top plate is a sloping recess with the bottom end on one door side, and the drain water is drained. The drain hose from the pump is inserted into a support cover mounted on the corner support of the showcase body near the door.

(E) Effect With the above configuration, the cold air is rectified and converged by the rectifier in the cold air discharge port, and is blown out directly below. Then, the discharged cold air quickly reaches each column and the lowest column one after another through the ventilation holes in the center of each machine. The guide tube wall further enhances its reaching action. Then, the returned air, whose temperature has risen by cooling the products on each shelf and exchanging heat, is sucked up along the entire circumference of the showcase by a cold air circulation fan, and then sucked in through each suction opening, and is sent to each cooler. The cold air is sufficiently cooled and then blown out from the cold air discharge port, thereby ensuring that the cold air has an outward path and a return path.

In addition, there are three openings for sucking cold air at equal intervals around the circumference, so the return air flows in concentratedly from these openings, forming a fairly vigorous airflow, and each Since the cooler is arranged, heat exchange is performed efficiently.

Furthermore, since this suction opening is not present on the door side, the door can be opened and closed without worrying about the influence of outside air intrusion.

Furthermore, the drain water from the cooler is collected at the bottom of the recess to facilitate drainage by the pump, and the drain hose from the pump is routed through the support cover so that it cannot be seen from the outside. are improving.

(F) Embodiment Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is an external perspective view of a refrigerated showcase, Figure 2 is a longitudinal cross-sectional view of the refrigerated showcase, and Figure 2 is a longitudinal cross-sectional view of the refrigerated showcase. Figure 3 shows B-B in Figure 2.
'Enlarged cross-sectional view, Figure 4 is an assembled and disassembled perspective view of the cold air circulation fan installed at the top of the refrigerated showcase and the cold air outlet, Figure 5 is an external perspective view from above and from the bottom of the cold air outlet. FIG.

In these figures, 1 is a showcase body with a hexagonal cross-sectional shape, and three doors 2.2', 2" are provided on every other side of the glass-covered inner window part, and a machine room 3 at the bottom is is provided with a compressor 4, a condenser 5, and an evaporating dish 6.A top plate 7 having a hexagonal planar shape is attached to the upper part of the showcase body 1.This top plate 7 A separate cold air outlet 8 is fitted and fixed into an oval hole formed at the center of the holder.As shown in FIG. A radial wall 9.9 and a concentric annular wall 10 with different inner and outer heights.
10', and these radial walls 9, 9 and concentric annular walls io, io' divide the inside of the cold air outlet 8 into a plurality of small outlet openings 8', 8'. Therefore, the cold air discharged from each discharge port 8', 8' is transferred to this radial wall 9.
rectified and converged by ゜9 and concentric annular wall 10.10',
The cold air flows directly downwards.

Reference numeral 11 designates an axial flow fan for circulating cold air which is mounted and fixed on the upper surface of the cold air outlet 8. The rectangular frame 12 on the outer periphery is placed on the outer periphery 13 of the cold air outlet 8, and four mounting screws 14. 14
It is fixed at

Reference numeral 15 denotes a rotating display shelf provided in the showcase body 1, which has circular shelves 16 and 16 arranged at equal intervals above and below.
5 itself has its central rotating shaft 17 connected to a motor (not shown) via a reduction gear mechanism 18, so that it rotates at a low speed. A circular ventilation hole 19.19 is formed in the center of each column 16, 16 except for the lowest shelf 16, and a cold air guide cylinder wall 20, 20 are erected. Therefore, the cold air blown directly downward from the cold air outlet 8 is
As shown by the arrows in the figure, it is easy to reach the top of the lowest shelf 16 through each ventilation hole 19,19. In addition, each shelf 16,1
The cold air flowing upward also spreads through the respective ventilation holes 19, 19, and the cold air uniformly flows through the inside of the refrigerator while maintaining a constant low temperature state.

The flow of this cold air is made easier by the respective cold air guide cylinder walls 20, 20, and also functions as a stopper member to prevent the products on the shelf from entering too deep and blocking the ventilation holes 19.19. Also plays a role.

By the way, there is a cold air outlet 8 and a cold air circulation fan 11 in the center.
The hexagonal top plate 7, which is equipped with The three side parts 21, 21, 21 corresponding to the showcase body 1
There is almost no gap between the upper hexagonal circumferential wall 7', and on the other hand,
The remaining three side parts 21, 21.21 are hexagonal peripheral walls 7
There is a gap between the Therefore, this gap is
Suction opening 22° 22. 22. for cold air that is sucked in when it circulates in the warehouse to cool the products on the shelves, and when the cold air whose temperature has risen through heat exchange is returned. becomes.

23 is stored in a space 25 between the top plate 7 and the top wall 24 of the showcase body, and is used for circulating cold air from around the top plate 7 through the respective cold air suction openings 22, 22. The same coolers are installed in the cold air flowing toward the cold air outlet 8 in the center of the top plate by the fan 11, and are located on the opposite side facing each of the XS2, 2', and 2''. These coolers 23, 23 .
23 consists of cooling fins 26, 26, 26 and meandering refrigerant pipes 27, 27, 27 perpendicular to these, and the method of circulating the refrigerant flowing through these refrigerant pipes 27, 27, 27 is determined by each cooler 23, 23, 23. In order to equalize frost formation, three refrigerant pipes are reciprocated in order, with the outgoing path through which the refrigerant flows in to the cold air circulation fan 11 side, and the return path through which the refrigerant flows out to the cold air suction opening 22 side.

28 is a recess formed on the top surface of the top plate 7 to receive drain water, and gutter-like surfaces 29, 29, 29 are attached for allowing drain water from each cooler 23, 23, 23 to flow down. At the same time, this recess 28 is an inclined recess having the bottom in that direction so that drain water is stored on one side of the door 2.

30 is a drainage pump having a water suction port 31 facing the bottom of the recess 28. 32 is a drainage hose connected to the discharge port of this drainage pump 30, and the pillar covers 34 and 3 are attached to each of the six pillars 33 and 33 of the showcase body 1.
4, it is guided toward the machine room 3 through the support cover 34 adjacent to the door 2 so as not to be seen from the outside;
Drain water is stored in the evaporating dish 6 there. In addition, moisture accumulated at the bottom of the storage chamber is also guided to the evaporating dish 6 through another hose 35.

With the above configuration, when the cold air circulation fan 11 is operated,
The cold air is blown downward from the cold air outlet 8, and some of it flows through each column 16 and the rest through each ventilation hole 19, 19, so that it is evenly distributed to the lowest membrane type 16 in a short time, and is distributed evenly to each shelf. 16 Cool the above products uniformly. Furthermore, the air whose temperature has increased after cooling rises and enters the cold air suction opening 22,
The cold air is sucked up from the air cooler 22 and passed through the coolers 23 and 23 to be sufficiently cooled, and then the low-temperature cold air is blown out from the discharge port 8 again and uniformly circulates inside the refrigerator. When the desired product on the shelf rotates to a position facing either door 2, 2', 2'', the rotating display shelf 15 stops when the door is opened, and the product can then be taken out. Also, doors 2.2', 2
Even if you open and close the door 2.2', there is no gap between the side facing the hexagonal top plate 7 and the hexagonal top plate 7, so it is difficult for outside air to enter the refrigerator. It is less affected by temperature rise.

(G) Detailed Description of the Invention According to the present invention, the cold air is rectified from the cold air outlet at the top of the refrigerator and blown directly downward, and then passes through the ventilation hole at the center of each shelf in the one-rotation row of shelves. Since it reaches each shelf and the bottom column quickly and evenly, the inside of the refrigerator can be kept uniformly at a low temperature. Furthermore,
The return air that has circulated inside the refrigerator and has risen in temperature returns through multiple cold air suction openings provided on the outer periphery of the upper part of the refrigerator, and heat exchange is performed by coolers placed in each of these return flows. This is done efficiently, and sufficiently cooled air can be discharged from the discharge port again.

In this way, a reciprocating circulation path for cold air is reliably formed within the refrigerator, resulting in a refrigerated showcase with an extremely superior cooling effect compared to conventional structures. In addition, an opening for cold air intake can be created by placing the top plate installed above the inside of the refrigerator against the top wall of the showcase main body so that there is a partial gap between them. It's also easier.

On the other hand, since the door for taking out the product is arranged in this gap-free area, even when the door is opened and closed, outside air does not flow upward toward the top plate, so the influence of the outside air is small.

Furthermore, by passing the hose for discharging drain water through the single support cover, various practical effects can be obtained, such as not exposing the hose to the outside and preserving the appearance.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an external perspective view of a cold source showcase, FIG. 2 is a vertical sectional view of the refrigerator showcase, and FIG. 3 is a cross-sectional view taken along line B in FIG. -B' enlarged cross-sectional view; Figure 4 is an exploded perspective view of the cold air circulation fan and cold air outlet installed at the top of the refrigerated showcase;
FIGS. 5(a), 5(b), and 5(c) are a perspective view of the appearance from above and from the bottom of the cold air discharge port, and a perspective view of the main part in cross section. l...Showcase body, 2.2', 2"...door,
7...Top plate, 8...Cold air outlet, 9, 10.10'
...Radial wall and concentric annular wall that serve as the rectifying section, 11...
・Cold air circulation fan, 15... Rotating display shelf, 16...
・Shelf, 19... Ventilation hole, 20... Cold air guide cylinder wall, 2
2... Cold air suction opening, 23... Cooler, 28
...Drain water receiver is a recess, 30...Drain pump,
32... Drain hose, 33... Strut, 34... Strut cover. Figure 1 Figure 2 Figure 4

Claims (4)

[Claims] (1) In a refrigerated showcase that has a rotating display shelf with multi-tiered shelves inside and a cooler installed at the top, a rectifier is installed in the upper center of the showcase body to direct the discharged cold air directly below. A circular ventilation hole is provided in the center of each shelf, except for the lowest shelf, so that the discharged cold air becomes a downward cold airflow, and a cold air guide cylinder wall is provided around the periphery of each ventilation hole. A refrigerated showcase formed by (2) In a refrigerated showcase that has a rotating display shelf with multi-tier shelves inside and a cooler placed above, a cold air circulation fan and a cold air outlet are placed in the center above the showcase body. A top plate is installed, and the outer periphery of this top plate and
A plurality of suction openings for return cold air after circulation within the refrigerator are provided between the upper peripheral wall of the showcase body, and each cold air flow flows from each suction opening toward the cold air outlet in the center of the top plate. A refrigerated showcase in which each of the above-mentioned coolers is arranged. (3) Inside the hexahedral-shaped showcase body, each transparent on each side and with three doors arranged on every other side, three coolers are arranged on the side facing each of the doors, and each of the cooling A hexagonal top plate is installed in the center, which has a recess for receiving drain water from the container, and a cool air circulation fan and a cold air outlet in the center. A refrigerated showcase comprising three suction openings for returning cool air after circulation within the refrigerator, each formed at a position outside each of the coolers between the showcase body and the upper peripheral wall thereof. (4) In claim 3, the recess on the top plate that receives drain water is formed as an inclined recess with a bottom portion on one side of the door, and a water intake port faces the bottom portion. A refrigerated showcase in which the drain hose from the pump is inserted into the support cover attached to the showcase support near the door.