JPH0610578B2 - Refrigerated showcase - Google Patents

Description

TECHNICAL FIELD The present invention relates to a refrigerating showcase in which cold air in a refrigerator circulates uniformly and enables efficient cooling.

(B) Conventional technology The entire surface is covered with glass, etc., and has a rotating display shelf inside.
There is known a refrigerating showcase in which a display shelf is rotated until a desired product comes to a door surface and the door is opened to take out the product. For example, an example thereof is described in Japanese Utility Model Publication No. 62-38202.

And in the refrigerated showcase described in this publication,
A cooler with a drain tray and a blower for circulation are arranged at the top of the showcase, and a compressor, condenser, etc. are provided in the machine room at the bottom, and the cool air cooled by the cooler circulates in the showcase by the blower for circulation. Then, the products on the rotating display shelves are cooled.

(C) Problems to be Solved by the Invention However, in the conventional refrigerating showcase disclosed in this publication, the cold air after cooling the goods on the uppermost shelf of the rotating display shelf is the same as the outer circumference of the shelf. The cold air flows through the gap between the inner surface of the showcase and the next shelf, then descends to the shelf below and reaches the bottom shelf. Therefore, even with the same cold air, the lower ones get warmer, and eventually, the products on the uppermost shelf are cooled best, and the lower ones are not sufficiently cooled. Further, since the cool air blown from the upper part is descended from the gaps in the outer peripheral portions of the respective shelves described above, the cool air current slowly descends, and the time of staying on the respective shelves of the cool air is relatively long. Can be said to be a thing. Therefore, in the uppermost shelf, a short cycle is likely to occur in which the blown-out cool air passes through the uppermost shelf and is sucked into the cooling chamber through the blowing port. Therefore, due to the phenomenon of such a short cycle, there is a drawback in that a bad cooling situation can be said to be such that almost no cold air circulation is performed in the compartment below the uppermost stage.

The present invention has been made in view of the above points, and while the cold air is in a low temperature state, it flows so as to reach the respective shelves and establishes a cooling circulation flow path that is recovered by the cooler again to make the inside of the refrigerator uniform. In addition, it is an object of the present invention to provide a refrigerated showcase that can be cooled efficiently.

(D) Means for Solving the Problems In the refrigerated showcase of the present invention, a cool air discharge port provided with a rectifying section for directing the discharged cool air to a position directly below is provided in the center of the upper portion of the showcase body, and the discharged cool air is more easily discharged. In order to be able to descend, the circular display hole is provided in the center of each shelf except the lowest shelf in the rotary display shelf, and a cold air guide tube wall is formed at the periphery of this ventilation hole. .

Further, in the present invention, the cold air that reaches the respective shelves through the ventilation holes, and the temperature of the product or the cold air whose temperature has risen after cooling rises along the entire circumference of the showcase and returns as a return flow,
A cool air intake opening is installed on the upper peripheral wall of the showcase body and above the showcase body so that it flows into the cooler arranged above the showcase body, and the cool air discharge port and the cold air circulation are provided in the center. A plurality of cooling fans are provided on the side where there is no door between the top plate and the outer peripheral part of the top plate, and the cooling is performed in the cold air flow that is sucked from the suction opening and heads for the cool air discharge port at the center of the top plate. The vessels are arranged respectively.

Further, the present invention has a hexagonal shape in which the showcase body is transparent on each side and three doors are arranged every other side, and three coolers are provided above the inside of the showcase body on the three sides without the doors. A hexagonal top plate equipped with a cool air circulation fan and a cool air discharge port is installed in the center with a recess on the top surface for receiving drain water from each cooler, and the door of this top plate is present. Not formed between the side edges of the three surfaces and the upper peripheral wall of the showcase body corresponding to the side edges, so that each of the three cool air suction openings is located outside the cooler. Is.

And, in the above refrigerated showcase having a hexahedron shape, the present invention sets the drain water receiving recess on the top plate to an inclined recess having the bottommost portion on one door side, and from the pump draining the drain water. The drain hose of No. 1 is inserted into a column cover attached to one of the corner columns of the showcase body near the door.

(E) Action With the above-described configuration, the cool air is rectified and converged by the rectifying unit in the cool air discharge port and blows out almost directly below. And
The discharged cool air reaches the spoodies one by one through the ventilation hole in the center of each shelf to each shelf and the lowest shelf. The guide tube wall further enhances its reaching action. And the return air, which has been heated by cooling the items on each shelf and exchanging heat,
It is sucked up along the entire circumference of the showcase by the cool air circulation fan, further sucked through each suction opening, ventilated to each cooler, blown out from the cool air discharge port as sufficiently cooled cold air, and the outward and return paths of cold air. Is reliably formed.

In addition, since the cold air suction openings are arranged at equal intervals in three surrounding areas, the return air flows in a concentrated manner through the suction openings, forming a considerably vigorous air flow, and each of them is formed there. Since the cooler is provided, heat exchange is efficiently performed. Further, since the suction opening does not exist on the door surface side, the door can be opened and closed without worrying about the influence of outside air infiltration.

Furthermore, drain water from the cooler is collected in the lowest part of the recess to facilitate drainage by the pump, and the drain hose is passed through the column cover from the pump and the outer circumference is improved so that it cannot be seen from the outside at all. is doing.

(F) Embodiments FIGS. 1 to 5 show an embodiment of the present invention. FIG. 1 is an external perspective view of a refrigerated showcase, FIG. 2 is a vertical AA ′ sectional view of the refrigerated showcase, and FIG. 2 is an enlarged sectional view taken along the line BB ′ in FIG. 2, and FIG. 4 is an exploded perspective view of a cool air circulation fan and a cool air discharge port installed on the upper part of the refrigerating showcase,
FIG. 5 is an external perspective view from above and the bottom of the cold air discharge port and an external perspective view showing a cross section of a main part.

In these figures, 1 is a showcase main body having a hexagonal cross-sectional shape, and among the glass-covered hexagonal windows, doors 2, 2 ', 2 "are provided on every other side, and three doors are provided on the lower machine room 3. Is provided with a compressor 4+, a condenser 5, and an evaporation tray 6. A flat hexagonal top plate 7 is attached to an upper portion inside the showcase body 1.
A separate cold air discharge port 8 is fitted and fixed to a circular hole formed in the center of. As shown in FIG. 5, the cold air discharge port 8 has a radial wall that functions as a rectifying unit inside.
9 and 9 and inner and outer double concentric annular walls 10 and 10 'having different heights, and these radial walls 9 and 9 and concentric annular walls 10 and 10' define the inside of the cool air discharge port 8. Multiple small outlets 8 ', 8'
It is divided into two parts. Therefore, the cool air discharged from each discharge port 8 ', 8', the radial wall 9, 9 and the concentric annular wall 10, 1.
With 0 ', it is rectified and converged, and becomes a cold air stream heading directly below.

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

15 is a rotating display shelf provided in the showcase body 1,
The upper and lower circular shelves 16, 16 are equally spaced, and the display shelf 15 itself has a central rotation shaft 17 connected to a motor (not shown) via a reduction gear mechanism 18 so that it can rotate at a low speed. ing. And, except for the lowermost shelf 16, circular ventilation holes 19 and 19 are formed at the center of each of the shelves 16 and 16, and the cold air guide tube wall 20 is provided at the periphery of the ventilation holes 19 and 19. 20 are erected. Therefore, the cool air blown out from the cool air discharge port 8 directly below the air vent holes 1 as shown by the arrows in FIG.
Easily reach on the lowest shelf 16 through 9,19. In addition, the cold air flowing upwards on the shelves 16 and 16 is also connected to the ventilation holes 19 and 19 respectively.
The cold air uniformly flows through the inside of the refrigerator while maintaining a constant low temperature. And this flow of cold air is made easier to flow by each cold air guide tube wall 20, 20,
It also functions as a stopper member so that the products on the shelves do not go too far and block the ventilation holes 19,19.

By the way, the hexagonal top plate 7 having the cool air discharge port 8 and the cool air circulation fan 11 at the center is the showcase body 1
It is installed above, but there are 6 sides at the time of installation.
Of the 1,21 ..., the three sides 2 corresponding to the doors 2,2 ', 2 "
1,21,21 have almost no gap between the upper hexagonal peripheral wall 7'of the showcase body 1 and the remaining three side portions 21,2.
1, 21 have a gap between them and the hexagonal peripheral wall 7 '. Therefore, this gap portion circulates in the refrigerator to cool the goods on the shelves, and when the heat-exchanged cold air rises and is returned, the cold air suction openings 22, 22, 22 are formed. Become.

23 is housed in a space 25 between the top plate 7 and the top wall 24 of the main body of the showcase, and for circulating cool air from around the top plate 7 through the respective cold air suction openings 22, 22, 22. fan
With the same cooler installed in the cold air flow toward the cold air discharge port 8 in the top plate by 11, each of the doors 2, 2 ',
It is arranged on the opposite side of 2 ″ facing each other. These coolers 23, 23, 23 are composed of cooling fins 26, 26, 26 and meandering refrigerant pipes 27, 27, 27 orthogonal to them. The method of circulating the refrigerant flowing through the refrigerant pipes 27, 27, 27 depends on each cooler.
In order to make the frosting of 23, 23, 23 uniform, the three refrigerant pipes are sequentially reciprocated, the outward path of the refrigerant flowing into the cool air circulation fan 11 side, the outgoing path to the cold air suction opening 22 side. It is plumbed.

Reference numeral 28 is a drain water receiving recess formed on the top surface of the top plate 7, and is provided with gutter-shaped surfaces 29, 29, 29 for allowing the drain water from the respective coolers 23, 23, 23 to flow down. , This recess 28
In order to collect drain water on the side of one door 2, the method has an inclined recess with the bottom.

Reference numeral 30 denotes a drainage pump having a water intake port 31 facing the bottom of the recess 28. 32 is a drain hose connected to the discharge port of the drain pump 30. Among the column covers 34, 34 attached to the columns 33, 33 of the showcase body 1, there are columns adjacent to the door 2. Through the inside of the cover 34, it is guided to the machine room 3 so as not to be seen from the outside, and drain water is stored in the evaporation tray 6 there. Also, the water accumulated at the bottom of the compartment is guided to the evaporation tray by another hose 35.

With the above configuration, when the cool air circulation fan 11 is operated, cool air is blown downward from the cool air discharge port 8, part of which flows to each shelf 16 and the rest of which flows through the ventilation holes 19 and 19. , Evenly spreads to the bottom shelf 16 in a short time, and evenly cools the products on each shelf 16. Furthermore, the air whose temperature has risen after cooling rises and is sucked up from the cooling suction openings 22,22, flows into the coolers 23,23 and is sufficiently cooled, and low temperature cold air is again blown out from the discharge port 8, It circulates uniformly in the refrigerator.
As for taking out the merchandise, when the desired merchandise on the shelf is rotated to a position facing any of the doors 2, 2, 2 ″, the rotating display rack 15 is stopped when the door is opened, so that the merchandise can be taken out thereafter. , The door 2,2,2 ″ is opened and closed
Since there is no gap between the hexagonal top plate 7 and the side facing,
It is difficult for outside air to enter the inside of the refrigerator, and the effect of temperature rise inside the refrigerator due to opening and closing the door is small.

(G) Effect of the Invention As described above, according to the present invention, the cool air is rectified from the cool air discharge port in the upper part of the inside of the cabinet and blows downward, and further, through the ventilation hole at the center of each shelf of the rotating display shelf. On the shelf,
In addition, since it reaches the bottom shelf quickly and evenly, the inside of the refrigerator can be kept in a low temperature evenly. Furthermore, the return air, which circulates in the chamber and has risen in temperature, returns through a plurality of cold air intake openings provided in the outer peripheral portion above the chamber, and heat is generated by the coolers respectively arranged in this return flow. The replacement is efficiently performed, and the sufficiently cooled cold air can be discharged from the discharge port.

In this way, since the reciprocating circulation path of the cool air is surely formed in the refrigerator, the refrigerating showcase has an extremely excellent cooling effect as compared with the conventional structure. In addition, the top plate surrounding the inside of the refrigerator can be used to create an opening for cold air intake with an installation method that has a partial gap to the upper wall of the showcase body, so it is structurally simple. It has become.

On the other hand, since the door for taking out the product is arranged in the portion without the gap, even if the door is opened / closed, the influence of outside air flowing into the top of the top plate is small.

Further, by passing a hose that drains drain water through a single column cover, various practical effects such as not being exposed to the outside and not impairing the external appearance can be obtained.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is an external perspective view of a refrigerated showcase, and FIG. 2 is a vertical view of the refrigerated showcase.
AA 'sectional view, FIG. 3 is an enlarged horizontal sectional view taken along the line BB' in FIG. 2, and FIG. 4 is an exploded perspective view of a cool air circulation fan and a cool air discharge port installed on the upper part of the refrigerated showcase. Figure, Figure 5
(a), (b) and (c) are an external perspective view from above and the bottom of the cool air discharge port and an external perspective view showing a cross section of a main part. 1 ... Showcase body, 2, 2 ', 2 "... Door, 7
... Top plate, 8 ... Cold air outlet, 9,10,10 '... Radial wall and concentric annular wall to be rectifying section, 11 ... Cool air circulation fan, 15 ... Rotary display Shelf, 16 ... Shelf, 19 ...
・ Ventilation hole, 20 ・ ・ ・ Cold air guide cylinder wall, 22 ・ ・ ・ Cold air suction opening, 23 ・ ・ ・ Cooler, 28 ・ ・ ・ Drain water receiving recess, 30 ・ ・ ・ Drainage pump, 32 ・..Drainage hoses, 33 ..
..Supports, 34 ... support covers.

Front page continuation (72) Inventor Hidetada Haruna 2-18 Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. JP, Y1) Actual public Sho 62-38202 (JP, Y2)

Claims (4)

[Claims] 1. A revolving display shelf having a multi-tiered shelf therein,
In a refrigerated showcase with a cooler placed at the top,
In the center of the upper part of the showcase body, a cool air discharge port with a rectifying part that directs the discharge cold air is provided directly below, and the center of each shelf except the bottom shelf so that this discharge cold air becomes a further descending cold air flow. A refrigerating showcase in which circular ventilation holes are provided in the room and cold air guide cylinder walls are formed at the periphery of each ventilation hole. 2. A transparent showcase body having a door on at least one surface thereof is provided with a circular blower hole at the center of each shelf except for the lowermost shelf, and cold air guides are provided at the periphery of each ventilation hole. Having a rotating display shelf with multi-tiered shelves forming a cylinder wall,
In a refrigerated showcase with a cooler placed at the top,
A top plate having a cool air circulation fan and a cool air discharge port in the center is arranged above the showcase main body, and between the outer peripheral portion of the top plate and the upper peripheral wall of the showcase main body, the circulation of the inside of the refrigerator is maintained. A plurality of period cool air blowing openings are provided on the side where the door does not exist, and the cooler is arranged in each cold air flow flowing from each of these suction openings toward the cool air discharge port at the center of the top plate. Refrigerated showcase. 3. The three coolers are respectively arranged on three surfaces without the doors above the inside of a hexahedron-shaped showcase body in which the doors are transparent and the doors are arranged every other surface. A hexagonal top plate that has a recess for receiving drain water from the cooler on the top surface and has a cool air circulation fan and a cool air discharge port is arranged in the center, and the side surfaces of the three surfaces where the door of the top plate does not exist. Section and the upper peripheral wall of the showcase body corresponding to this side portion, three openings for sucking in the return cool air after circulation in the refrigerator are formed at positions outside the respective coolers. Refrigerated showcase. 4. The method according to claim 3, wherein the recess on the top plate for receiving drain water is an inclined recess having a bottom on one door side, and a water intake port at the bottom. A refrigerated showcase in which the drain hose from the pump facing the above is inserted into the prop cover attached to the showcase prop near this door.