CN105208898A - Open showcase - Google Patents

Abstract

The present invention makes the open display cabinet compact and has a small installation area, so as to facilitate loading work and transportation to the installation place. In the open display case main body (1), the relationship between the dimension (Fa) in the left-right width direction and the dimension (Fb) in the front-back depth direction is Fa≧Fb.

Description

open display cabinet

technical field

An embodiment of the present invention relates to an open display case including a showroom including shelves for placing products in multiple stages.

Background technique

An open display case having a showroom including shelves for placing products in multiple stages is known. The aforementioned showrooms are usually only open to the front. When someone stands in front of the showroom, it is not easy to see the products in the showroom, and it is also inconvenient for other people to take out the products in the showroom. The goods in the showroom are not easy to see clearly, and the display effect of the goods is poor. It is inconvenient to take out the goods in the showroom, and the sales efficiency of the goods is low.

On the other hand, in order to improve the display effect and sales efficiency of products, there are known open display cabinets (such as JP-A-2005-55069 and JP-A-2005-55069A and Publication No. 2005-55121). In a store where such an open display case is installed, products in the showroom can be viewed from three directions corresponding to the front, left side, and right side of the showroom, and can be taken out. This is convenient for both sellers and buyers.

Contents of the invention

Small-scale convenience stores and relatively small-scale supermarkets and other stores cannot ensure a large open display cabinet installation area. In particular, an open display case having a showroom having three open front, left, and right sides as described above has a considerably longer dimension in the front-rear depth direction than the dimension in the front left-right width direction. Such a large-scale open display cabinet has a large installation area and a large mass, so the installation place is limited, and it is troublesome to simultaneously load and transport to the installation place.

Due to such a situation, it is required to have an open display cabinet that is compact, has a small installation area, is easy to load and transport to the installation site, and has a good product display effect and high sales efficiency.

An open display case according to an embodiment of the present invention includes a main body, a showroom arranged in the main body, and a cooling unit for supplying cool air to the showroom. The relationship between the dimension Fa in the left-right width direction of the main body and the dimension Fb in the front-back depth direction is Fa≧Fb. The showroom has a front opening, a left side opening, and a right side opening, and is exposed to the outside of the main body through these front openings, left side openings, and right side openings. The cooling unit supplies cool air to the showroom.

Description of drawings

FIG. 1 is a front view of a main body of an embodiment.

Fig. 2 is a side view of the main body of the above-mentioned one embodiment.

Fig. 3 is a schematic view showing a longitudinal section of the main body of the above-mentioned one embodiment.

Fig. 4 is a diagram of the ceiling portion of the showroom according to the above-mentioned one embodiment viewed obliquely from below.

Fig. 5 is a front view of the rear wall of the showroom according to the above-mentioned one embodiment.

Fig. 6 is a view of the bottom portion of the showroom according to the above-mentioned one embodiment viewed obliquely from above.

FIG. 7 shows a modified example of the cool air outlet of the above-mentioned one embodiment.

Fig. 8 is a view of the attached state of each guide plate in the above-mentioned one embodiment viewed from above.

Fig. 9 shows the dimensions of each guide plate in Fig. 8 .

Fig. 10 is a side view of the mounted state of the adjustment plate according to the above-mentioned one embodiment.

FIG. 11 is an enlarged view of a main part of FIG. 10 .

Fig. 12 is an external perspective view of the adjustment plate of the above-mentioned one embodiment.

Fig. 13 shows the relationship between each blowing part of the cold air blowing outlet and the air volume in the above-mentioned one embodiment.

Fig. 14 is an external perspective view of the shelf according to the above one embodiment.

Fig. 15 is an external perspective view of a modified example of the shelf of the above-mentioned one embodiment.

Fig. 16 shows the configuration of the steel plates disposed on the cold air outlets, air curtain outlets, and suction ports of the above-mentioned one embodiment.

Fig. 17 shows a modified example of the steel sheet shown in Fig. 16 .

Fig. 18 shows another modified example of the steel sheet shown in Fig. 16 .

Fig. 19 shows still another modified example of the steel sheet shown in Fig. 16 .

Fig. 20 shows still another modified example of the steel sheet shown in Fig. 16 .

Fig. 21 shows the relationship between the air curtain air volume ratio and the product temperature in the above-mentioned one embodiment.

Fig. 22 shows the relationship between the central air volume ratio and product temperature in the above-mentioned one embodiment.

Fig. 23 is a front view of a modified example of the main body of the above-mentioned one embodiment.

Fig. 24 is a side view of the main body of Fig. 23 .

Detailed ways

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a view of the appearance of the open display case viewed from the front, and FIG. 2 is a view of the appearance of the open display case viewed from the side. The showroom of the open display cabinet is a three-sided open showroom that is open on the front, left, and right sides.

The main body 1 of the open display cabinet is rectangular in front view and top view. The main body 1 has a top plate 2 at the uppermost part, a machine room 3 at the lowermost part, and a showroom 4 for displaying products between the top plate 2 and the machine room 3 . The back surface 1a of the main body 1 is formed of a rectangular flat plate.

The shape of the top plate 2 seen from the front is a rectangle whose thickness in the vertical height direction is small, and the dimension in the lateral width direction is Fa. The ceiling surface 4b of the showroom 4 is formed by the lower surface of the top plate 2 . The shape of the machine room 3 viewed from the front is a rectangle having a certain thickness in the vertical height direction and Fa in the lateral width direction. With the upper surface of the machine room 3, the bottom surface 4c of the showroom 4 is formed. The shape of the showroom 4 viewed from the front is a rectangle whose vertical height direction is long and whose lateral width direction is Fa.

The shape of the top plate 2 seen from the side is thinner in the vertical height direction, protrudes from the back surface 1a toward the front side, and has a rectangular shape with a predetermined dimension in the front-rear depth direction. The shape of the machine room 3 viewed from the side is a rectangular shape with a certain thickness in the vertical height direction and Fb in the front-back depth direction. The dimension Fb of the machine room 3 in the depth direction is slightly longer than the dimension of the top plate 2 in the depth direction.

The rear surface 4a of the showroom 4 is arranged with a gap of a predetermined size between the rear surface 1a of the main body 1 of the open showcase. The upper part of the back surface 4a is substantially parallel to the back surface 1a. The portion other than the upper portion of the back surface 4a is slightly inclined so as to gradually protrude toward the front side as it goes downward.

The showroom 4 is a three-sided open type in which the front, left, and right sides are open except the back 4a, the ceiling 4b, and the bottom 4c, and has a front opening 41, a left opening 42, and a right side. opening 43 . The showroom 4 is exposed to the outside of the main body 1 through the front opening 41 , the left side opening 42 , and the right side opening 43 .

The dimension in the left-right width direction of the main body 1 is Fa which is the same as the dimension in the left-right width direction of the top plate 2 and the dimension in the left-right width direction of the machine room 3 . The dimension in the front-back depth direction of the main body 1 is Fb which is the same as the dimension in the front-back depth direction of the machine room 3 .

The relationship between the dimension Fa in the left-right width direction of the main body 1 and the dimension Fb in the front-back depth direction of the main body 1 is Fa>Fb in the drawings, but Fa=Fb may also be used. That is, the relationship between the dimension Fa in the left-right width direction of the main body 1 and the dimension Fb in the front-back depth direction of the main body 1 is Fa≧Fb.

Each part constituting the main body 1 will be described in detail below.

FIG. 3 is a schematic diagram of a longitudinal section of the main body 1 . FIG. 4 is a view of the ceiling surface 4b of the showroom 4 viewed obliquely from below. FIG. 5 is a view of the rear surface 4a of the showroom 4 viewed from the front. FIG. 6 is a view of the bottom surface 4c of the showroom 4 viewed obliquely from above. The hatched parts in these FIGS. 4 to 6 indicate the installation positions of the respective shelves 5 .

The rear surface 4a of the showroom 4 is gradually inclined toward the front opening 41 from the ceiling surface 4b to the bottom surface 4c as described above. On the rear surface 4a, a plurality of stages, for example, four stages of shelves 5 for product placement are arranged at predetermined intervals in the vertical direction. The dimension in the left-right width direction of each shelf 5 is slightly shorter than the dimension in the left-right width direction of the rear surface 4a. Each shelf 5 protrudes toward the front opening 41 while keeping the bottom surface 4c in a substantially parallel state. Merchandise for sale, such as many canned beverages, bottled beverages, etc., are placed and displayed on these shelves 5 . The space between the shelves 5 constitutes a space for storing products on the shelves 5 and a space for cooling.

On the rear surface 4a of the showroom 4, at a position corresponding to the cooling space between the shelves 5, a cold air outlet 7 for blowing out cooling air (cold air) is formed. These cold air outlets 7 are openings formed in a U-shape as shown in FIGS. 1 , 4 , and 5 .

Specifically, the cold air outlet 7 includes a vertically elongated left blowing portion 7ax and a right blowing portion 7ay that are long in the vertical height direction, and a horizontally long blowing portion extending in the left and right width directions between the side blowing portions 7ax and 7ay. Center blowing part 7b. The left blowing part 7ax is formed in the left edge part 4x of the back surface 4a. The left end edge 4x is adjacent to the left side opening 42 . The right blow-out part 7ay is formed in the right edge part 4y of the back surface 4a. The right end edge portion 4y is adjacent to the right side opening portion 43 . The center blowing part 7b is arranged at a position close to the upper part of the above-mentioned cooling space, and is connected to the upper parts of the respective side blowing parts 7ax and 7ay.

The dimension of the left-right width direction of the opening of each side blowout part 7ax, 7ay is substantially equal to the dimension of the vertical height direction of the opening of the center blowout part 7b. The dimension of the vertical height direction of the opening of each side blowout part 7ax, 7ay is several times the dimension of the vertical height direction of the opening of the center blowout part 7b.

The cool air blown out from each cool air outlet 7 is sent to the merchandise on each shelf 5 . In particular, the dimension from the left end to the right end of each cold air outlet 7 is equal to or slightly larger than the dimension in the left-right width direction of each shelf 5 . In this embodiment, the width from the left end to the right end of each cool air outlet 7 is slightly larger than the left-right width direction dimension of each shelf 5 . With such a structure, each side blowing part 7ax, 7ay corresponds to the both ends of the left-right width direction of each shelf 5, and the outer side. As a result, the cool air blown out from the side blowing portions 7ax and 7ay can come into contact with the products placed on both ends of the shelf 5 in the left-right width direction while flowing.

In addition, the side blowout parts 7ax, 7ay and the center blowout part 7b are formed as one continuous opening, but they may also be constructed by using a steel plate forming a plurality of openings, that is, a so-called perforated metal plate, as shown in a partially enlarged manner in FIG. 7 . Each side blowout part 7ax, 7ay and the center blowout part 7b. In this case, each side blowing part 7ax, 7ay, and the center blowing part 7b contain the several blowing hole 7g of long hole shape. 7g of each blowing hole of each side blowing part 7ax, 7ay is arranged along the direction of the vertical height direction along the longitudinal direction, and also along the vertical height direction. The rows of this arrangement form a plurality of rows (two rows) along the left-right width direction. Each blowing hole 7g of the center blowing part 7b is arranged in the direction along the left-right width direction along the longitudinal direction, and also along the left-right width direction. This queuing queue forms a plurality of rows (4 rows) along the vertical height direction. In addition, instead of a perforated metal plate, a synthetic resin plate formed with a plurality of blowing holes 7g may be used.

The cold air blown out from each blowing hole 7g of the central blowing portion 7b spreads in the vertical width direction, falls on the whole area of the shelf 5, and cools all the commodities on the shelf 5. The cold air blown out from the respective blowing holes 7g of the side blowing portions 7ax, 7ay flows toward both ends of the shelf 5 in the left and right width direction, and intensively cools the products placed on the left and right width ends thereof.

Utilize the cold wind that blows out like this, even if it is the three-sided opening type showroom 4 that has front opening 41, left side opening 42, right side opening 43, also can uniformly and efficiently cool the products on each shelf 5. Allow to cool.

On the other hand, as shown in FIG. 2, FIG. 3, and FIG. 4, on the ceiling 2 constituting the ceiling surface 4b of the showroom 4, an illuminating unit 8 using a fluorescent lamp or a light emitting diode (LED) is arranged. The lighting unit 8 has a length along the upper edge 41 a of the front opening 41 of the showroom 4 , and illuminates the showroom 4 and transmits light to the front of the top plate 2 . On the front surface of the top plate 2, the product name etc. of the goods accommodated in the showroom 4 are described. The description of the product name appears by the illumination of the illumination unit 8 .

The air curtain outlet 10 is formed in the ceiling surface 4b of the showroom 4. As shown in FIG. As shown in FIG. 4 , the air curtain outlet 10 is a U-shaped opening.

Specifically, the air curtain outlet 10 includes a vertically elongated left blowing portion 10ax and a right blowing portion 10ay that are long in the front and rear depth directions, and a horizontally long shape that extends in the left and right width directions between these side blowing portions 10ax and 10ay. The central blowing part 10b. The left blowing portion 10ax is formed along the upper edge 42a of the left side opening 42 . The right blowing portion 10ay is formed along the upper edge 43a of the right side opening 43 . The center blowout part 10b is formed along the upper edge 41a of the front opening part 41, and is connected to the front side end parts of each side blowout part 10ax, 10ay.

The cool air blown out from the center blowing portion 10 b flows from above to below along the front opening portion 41 of the showroom 4 . The cold air blown out from both side blowing parts 10ax and 10ay flows downward along the left side opening part 42 and the right side opening part 43 of the showroom 4 .

The position of each side blowout part 10ax, 10ay is further outside than the position of each side blowout part 7ax, 7ay of the cool air outlet 7. As shown in FIG. The position of the center blowing part 10b is further outside than the position of the front side end part of each shelf 5. As shown in FIG. Therefore, the cool air blown out from the side blowout parts 10ax, 10ay and the center blowout part 10b flows downward without encountering the cool air blown out from the side blowout parts 7ax, 7ay, and without hitting each shelf 5. The cold airflow blown out from these side outlets 10ax and 10ay and the center outlet 10b constitutes an air curtain along the front opening 41 , left side opening 42 , and right side opening 43 of the showroom 4 . By means of the air curtain, external air is prevented from intruding into the display room 4 from outside the main body 1 .

Also, although it is possible to form one opening that connects each side blowout portion 10ax, 10ay and the center blowout portion 10b, it can also be the same as each side blowout portion 7ax, 7ay of the cold air outlet 7 and the center blowout portion 7b. A steel plate formed with a plurality of openings, that is, a so-called perforated metal plate constitutes the side blowout parts 10ax and 10ay and the center blowout part 10b. Instead of a perforated steel plate, a synthetic resin plate formed with a plurality of openings may also be used.

As shown in FIG. 3 , a duct 11 communicating with the curtain air outlet 10 is formed inside the top plate 2 . The duct 11 guides the cool air supplied from the duct 12 on the back side of the rear surface 4 a to the air curtain outlet 10 .

On the other hand, the suction port 13 is formed in the bottom surface 4c of the showroom 4. As shown in FIG. The suction port 13 is a U-shaped opening as shown in FIG.

Specifically, the suction port 13 includes a vertically elongated left suction portion 13ax and a right suction portion 13ay that are long in the front-rear depth direction, and a horizontally long center that extends in the left-right width direction between these side suction portions 13ax and 13ay. Suction part 13b. The left suction portion 13ax is formed along the lower edge 42b of the left side opening 42 . The right suction portion 13ay is formed along the lower edge 43b of the right side opening 43 . The center suction part 13b is formed along the lower edge 41b of the front opening part 41, and is connected to the front side end parts of each side suction part 13ax, 13ay.

The position of each side suction part 13ax, 13ay of the suction port 13, and the center suction part 13b is outside the peripheral edge part of each shelf 5. As shown in FIG. The position of each side suction part 13ax, 13ay of the suction port 13 is outer than the position of each side blowout part 7ax, 7ay of each cool air blower port 7 in the left-right width direction. Due to this positional relationship, there is no obstacle in the cold air flow path between the air curtain outlet 10 and the suction port 13 , and the cold air for the air curtain blown out from the air curtain outlet 10 is smoothly and efficiently sucked into the suction port 13 . As a result, an air curtain can be stably formed.

The length of each side suction part 13ax, 13ay of the suction port 13 in the front-back depth direction is shorter than the length of the bottom surface 4c in the front-back depth direction. That is, the position of the non-front side edge part of each side suction part 13ax, 13ay maintains predetermined space|interval from the back surface 4a. If the position of the non-front side end portion of each side suction portion 13ax, 13ay is closer to the back surface 4a, in this case, the cold air blown out from each side blowout portion 7ax, 7ay of the cold air blowout port 7 at the bottom will occur. Flowing to the outside of the lowest shelf 5, the products on the lowest shelf 5 are not cooled, so the cold air is sucked by the side suction parts 13ax and 13ay, so-called short circuit. In order to prevent such a short circuit, the positions of the non-front side end portions of the side suction portions 13ax and 13ay are kept at a predetermined distance from the rear surface 4a.

Also, in the above-mentioned embodiment, the side suction portions 10ax, 10ay and the center suction portion 10b of the air curtain outlet 10 are configured to be positioned outside the peripheral edge portions of the shelves 5, but only the side suction portions 13ax, 13ay and a part of each of the central suction portion 13b is located outside the peripheral portion of each shelf 5 .

An example of such a structure is shown by the 2-point lock line in Fig. 4 . That is, the air curtain outlet 10 includes a left blowout part 10cx, a right blowout part 10cy, and a center blowout part 10b. The position of each side blowing part 10cx, 10cy is inside rather than the position of each said side blowing part 10ax, 10ay in the left-right width direction. Also, the width from the left end of the left blowout part 10cx to the right end of the right blowout part 10cy is approximately the same as the width from the left end of the left blowout part 7ax to the right end of the right blowout part 7ay of the cool air outlet 7 . That is, only a part of each side blowing part 10cx, 10cy is located outside the both end parts of the left-right width direction of each shelf 5. As shown in FIG. A part of the cold air blown out from each side blower part 10cx, 10cy flows through the outer side of both ends of the left-right width direction of each shelf 5, and is sucked by each side suction part 13ax, 13ay. Create a full air curtain.

The ideal relationship between the dimension of the left and right width direction of the shelf 5, the dimension of the left and right width direction of the cold air outlet 7, and the dimension of the left and right width direction of the air curtain outlet 10 is that "the dimension of the left and right width direction of the shelf 5"≦"cool air blowing outlet 10". Dimensions in the lateral width direction of the outlet 7"≦"dimensions in the lateral width direction of the air curtain outlet 10", and "dimensions in the lateral width direction of the shelf 5"<"dimensions in the lateral width direction of the air curtain outlet 10".

In addition, the cold air blown out from the air curtain outlet 10 has a low temperature and a fast wind speed when it is just blown out. Again, in the case of adopting the above-mentioned side blowing parts 10cx, 10cy, the cold air blown out from the side blowing parts 10cx, 10cy encounters the uppermost (first stage) shelf 5, and is blown out from each side of the uppermost cold air outlet 7. The cool air blown out from the parts 7ax and 7ay is supplied to the uppermost shelf 5 . In this case, there is a possibility that the products placed on the uppermost shelf 5 may cool down excessively. In order to prevent this from happening, it is sufficient to block or remove the side outlets 7ax and 7ay of the cold air outlet 7 facing the cooling space between the uppermost shelf 5 and the second shelf 5 from above.

The temperature of the cold air for the air curtain blown out from the air curtain outlet 10 increases as it goes down, and the wind speed also decreases. If kept like this, the effect of the air curtain on the lower portion of the showroom 4 may be weakened. However, the cool air blown out from the side outlets 7ax and 7ay of the cool air outlets 7 falls downward by its own weight, and flows downward from both ends in the left and right width direction of each shelf 5 . The cool air flowing downward merges with the cool air for the air curtain blown out from the side blowout parts 10ax and 10ay (or the side blowout parts 10cx and 10cy) of the air curtain blowout port 10 . The air curtain effect on the lower portion of the showroom 4 can be maintained sufficiently and stably by the merged cool air.

On the other hand, as shown in FIG. 3 , in the space between the rear surface 4 a of the showroom 4 and the rear surface 1 a of the main body 1 , a partition 19 formed of a heat insulating material such as foamed styrene is disposed. The space between the rear surface 4 a and the rear surface 1 a is partitioned by the partition plate 19 into the duct 12 for cooling air circulation and the duct 20 for exhausting. The pipes 12 , 20 extend along the vertical height direction of the main body 1 .

The upper part of the pipeline 12 communicates with the air curtain outlet 10 through the above-mentioned pipeline 11 in the top plate 2 . The lower portion of the duct 12 communicates with a duct 14a described below. Each cold air outlet 7 is connected in the middle of the duct 12 . The upper portion of the duct 20 communicates with the opening 21 formed between the top plate 2 and the rear surface 1a. The lower part of the pipe 20 communicates with the inner space of the machine room 3 .

A compressor 15 , a condenser 16 , an expansion valve 17 , and a fan 18 are arranged in the inner space of the machine room 3 . Moreover, in the internal space of the machine room 3, the partition wall 14 is arrange|positioned parallel to the upper surface of the machine room 3 (bottom surface 4c of the showroom 4). A duct 14 a is formed on the inner side of the upper surface of the machine room 3 by the partition wall 14 . This duct 14 a communicates the suction port 13 with the lower part of the duct 12 . A fan 22 for cooling air circulation is disposed in the duct 14a. The fan 22 sucks air from the suction port 13, and sends the sucked air to the lower part of the duct 12 through the duct 14a.

An evaporator 23 is arranged at the lower part of the pipeline 12 . This evaporator 23 is located below each side blowing part 7ax, 7ay of the cold air blowing port 7 of the lowest part. Moreover, the dimension of the left-right width direction of the evaporator 23 is substantially the same as the dimension from the left end of the left blowing part 7ax to the right end of the right blowing part 7ay.

A plurality of punched holes 27 for introducing outside air are formed in the plate body constituting the front portion of the machine room 3 . External air is introduced into the machine compartment 3 through the punched holes 27 by the operation of the above-mentioned fan 18 . The temperature of the introduced outside air is raised through the condenser 16, and then the compressor 15 is cooled to raise the temperature. The high-temperature air flows through the duct 20 to the opening 21 and is discharged from the opening 21 to the outside of the main body 1 .

The above-mentioned compressor 15, condenser 16, expansion valve 17, and evaporator 23 are sequentially connected through refrigerant pipes. This connection constitutes a refrigeration cycle.

FIG. 8 is a cross-sectional view of the main body 1 . As shown in this FIG. 8 and FIG. 3 , in the duct 12, guide plates (first guide plates) 25ax are respectively arranged on the opening upper edges of each left blowing portion 7ax, and guide plates (first guide plate) 25ax are respectively arranged on the opening upper edges of each right blowing portion 7ay ( 1st guide plate) 25ay, and guide plate (2nd guide plate) 25b is arrange|positioned at the opening upper edge of each center blowing part 7b, respectively. The guide plates 25ax, 25ay, and 25b are "L"-shaped steel plates as shown in Figure 9, and the vertical part A is fixed on the inside of the back surface 4a by, for example, welding, and the flat part (shielding plate part) B protrudes into the space in the pipe 12. .

The flat parts B of the guide plates 25ax, 25ay guide a part of the cool air passing through the duct 12 to the respective side blowout parts 7ax, 7ay. The flat part B of the guide plate 25b guides a part of the cool air passing through the duct 12 to each center blowing part 7b.

The vertical dimension H of the upright portion A of the guide plates 25ax and 25ay is about 10 mm. The protruding length T of the planar portion B of the guide plates 25ax, 25ay in the front-back depth direction is about 20 mm. The horizontal dimension (full length) L of the upright portion A of the guide plates 25ax and 25ay and the horizontal dimension (full length) L of the planar portion B are approximately 40 mm.

The vertical dimension H of the upright portion A of the guide plate 25b is about 10 mm. The protrusion length T of the front-back depth direction of the flat part B of the guide plate 25b is about 10 mm. The dimension (full length) L of the vertical width direction of the vertical part A of the guide plate 25b and the dimension (full length) L of the horizontal width direction of the flat part B are about 1600 mm.

The dimension L (= about 40 mm) of each of the guide plates 25ax and 25ay in the left and right width direction is substantially the same as the dimension of each of the side blowout parts 7ax and 7ay in the left and right width direction. The dimension L (=about 1600mm) of the guide plate 25b in the left-right width direction is substantially the same as the dimension of the center blowing part 7b in the left-right width direction.

The protruding length T of the flat portion B of the guide plates 25ax and 25ay is about 20 mm, and the protruding length T of the flat portion B of the guide plate 25b is about 10 mm. By making the protruding length T of the planar portion B of the guide plate 25ax, 25ay different from the protruding length T of the planar portion B of the guide plate 25b in this way, although the dimensions in the left and right width direction of each side blowout portion 7ax, 7ay are different from the central blowout portion 7b. The dimensions in the left and right width directions are different, but the side blowout parts 7ax, 7ay and the center blowout part 7b can still suck in a proper amount of cold air respectively. The cold air taken in by each side blowout part 7ax, 7ay and the center blowout part 7b is blown to the showroom 4. As shown in FIG.

In addition, the dimension of the left-right width direction of each shelf 5 is about 1700 mm. This is more than the sum 2L of the dimension L (= about 40 mm) of the left and right width direction of the guide plate 25ax corresponding to the left blowing part 7ax and the dimension L (= about 40 mm) of the guide plate 25ay corresponding to the right blowing part 7ay. (=approximately 80mm) plus the length (=approximately 1680mm) corresponding to the dimension L (=approximately 1600mm) of the guide plate 25b in the left-right width direction of the center blowout portion 7b is slightly longer.

The above-mentioned compressor 15 sucks in refrigerant and compresses it, and then discharges it. As shown in FIG. 3 , the high-temperature and high-pressure gas refrigerant discharged from the compressor 15 flows into the condenser 16 . The gas refrigerant flowing into the condenser 16 is condensed after exchanging heat with the outside air taken in by the operation of the fan 18 . Liquid refrigerant flowing from the condenser 16 flows into the evaporator 23 through the expansion valve 17 . The liquid refrigerant flowing into the evaporator 23 evaporates after exchanging heat with the air sent by the fan 22 . The gas refrigerant flowing out of the evaporator 23 is drawn into the compressor 15 .

Due to the operation of the fans 22, the products on the shelves 5 are cooled, and the air with the temperature rise and the air curtain flowing along the front opening 41, the left side opening 42, and the right side opening 43 are sucked into the inlet. 13 inhalation. The air sucked by the suction port 13 flows into the evaporator 23 through the duct 14a. The air flowing into the evaporator 23 is deprived of heat by the refrigerant in the evaporator 23, and the temperature drops to become cold air. The cold air passing through the evaporator 23 rises in the duct 12 . A part of the cool air rising in the duct 12 is guided to each cool air outlet 7 by the guide plates 25ax, 25ay, and 25b, and is blown out to the showroom 4 from each cool air outlet 7 . The cold air blown out cools the merchandise on each shelf 5 .

Due to the action of the guide plates 25ax, 25ay, and 25b, cool air can be efficiently guided to the respective cool air outlets 7 . Especially because the protruding length T of the planar portion B of the guide plate 25ax, 25ay is different from the protruding length T of the planar portion B of the guide plate 25b, each side blowout portion 7ax, 7ay and the central blowout portion 7b of each cold air outlet 7 Blow out the appropriate amount of cool air respectively.

If the protruding length T of the planar portion B of the guide plate 25ax, 25ay is the same as the protruding length T of the planar portion B of the guide plate 25b, the air flow per unit area of the openings of each side blowing portion 7ax, 7ay will be larger than that of the guide plate 25b. The ventilation rate per unit area of the opening of the center blowing part 7b is small.

In the case of this embodiment, the protruding length T of the planar portion B of the guide plates 25ax, 25ay corresponding to the side blowing portions 7ax, 7ay is set to be greater than the protruding length T of the planar portion B of the guide plate 25b corresponding to the central blowing portion 7b. Since it is long, the airflow per unit area of the openings of the side blowout parts 7ax and 7ay can be set to be equal to or larger than the airflow per unit area of the opening of the central blowout part 7b. With this setting, sufficient cold air can be sent to the products placed at both corners on the front side of each shelf 5 . That is to say, all commodities on each shelf 5 can be properly cooled.

The refrigerating cycle, the cold air outlet 7, the duct 12, the suction port 13, the duct 14a, the fan 22, the guide plates 25ax, 25ay, 25b, and the adjustment plate 25z described below constitute a cooling unit for supplying cold air to the inside of the showroom 4.

On the other hand, the cool air reaching the upper part of the duct 12 flows into the duct 11 in the top plate 2 . The cold air flowing into the duct 11 is guided to the air curtain outlet 10 , and is blown downward from the side outlets 10ax and 10ay and the center outlet 10b of the air curtain outlet 10 .

The cold air flow blown out from the side outlets 10ax and 10ay and the center outlet 10b forms air curtains along the front opening 41 , left side opening 42 , and right side opening 43 of the showroom 4 . By means of the air curtain, it is possible to prevent outside air from entering the showroom 4 from the outside of the main body 1 . Since the intrusion of outside air can be prevented, the cooling efficiency of the products in the showroom 4 can be improved.

From the air curtain outlet 10, the cold air that flows downward is blown out, and the cold air that cools the commodities on each shelf 5 is blown from the cold air outlet 7, and the mixed state is drawn up by the suction port 13 that is in a negative pressure state due to the operation of the fan 22. Inhale efficiently. The mixed gas sucked into the suction port 13 flows to the evaporator 23 through the pipe 14a, and circulates through the above-mentioned path.

In this way, even in the three-sided open-type showroom 4 having the front opening 41 , the left side opening 42 , and the right side opening 43 , products on the shelves 5 can be cooled uniformly and efficiently. Products in the showroom 4 can be confirmed from any direction from the front side, the left side, and the right side, and can be seen clearly. Thereby, the display effect of products can be improved. Even if someone is standing in front of the front opening 41, the products in the showroom 4 can be easily taken out through the left side opening 42 or the right side opening 43 without being hindered. Therefore, the sales efficiency of a product can be improved.

Since the relationship between the dimension Fa in the left-right width direction of the main body 1 and the dimension Fb in the front-back depth direction of the main body 1 is Fa≧Fb, the main body 1 is very compact and the installation area of the main body 1 can be reduced. Therefore, the main body 1 can be installed even in stores such as a small-scale convenience store or a relatively small-scale supermarket. The work of shipping the main body 1 and moving it into the installation place is also easy.

However, it is necessary to optimize the distribution of the amount of cold air blown forward from the cool air outlet 7 and the amount of cold air blown downward from the curtain air outlet 10 .

Also in each cool air outlet 7, it is necessary to achieve an optimum distribution of the air volume blown from the side blowout parts 7ax and 7ay and the air blown out from the central blowout part 7b. The straightness of the wind blown out from the side blowout parts 7ax and 7ay and the center blowout part 7b is also important. In particular, the strong cold air that has just passed through the evaporator 23 is blown upward in the space in the space in the duct 12 corresponding to the lowermost cold air outlet 7 . Most of the upward cold air flows against the surface of the smooth partition 19 . The amount of cool air flowing toward each cool air outlet 7 is small.

In order to slightly reduce these problems, guide plates 25ax, 25ay, 25b are provided in the duct 12 . However, as described above, most of the cold air flowing upward flows against the smooth surface of the partition plate 19, and the amount of cold air flowing toward each of the cold air outlets 7 is small. As a result, the amount of cool air blown from each cool air outlet 7 into the showroom 4 is insufficient.

As a countermeasure, it is necessary to adjust so that the cold air flowing against the surface of the partition plate 19 also flows toward the respective guide plates 25ax, 25ay, and 25b. Then, as shown in FIG. 10 , FIG. 11 , and FIG. 12 , the adjusting plate 25z is arranged in the duct 12 . In addition, FIG. 10 is a schematic diagram showing a partial longitudinal section of the main body 1 . FIG. 11 is an enlarged view of a part of FIG. 10 . Fig. 12 shows the appearance of the adjustment plate 25z.

Adjusting plate 25z is the same as guide plate 25ax, 25ay, 25b " L " font steel plate, and upright part C is fixed on the surface of dividing plate 19 by welding for example, and flat part (shielding plate part) D faces to the inside of pipeline 12. The space stands out. The attachment position of this adjustment plate 25z is the opposite side to the guide plate 25ax, 25ay, 25b arrange|positioned at the opening upper edge of the cold air outlet 7 of the lowest part. The cold air outlet 7 at the lowermost part blows cold air to the cooling space on the lowermost shelf 5Z shown in FIG. 10 .

The guide plates 25ax, 25ay, 25b are attached to the inside of the rear surface 4a, and the adjustment plate 25z is attached to the surface of the partition plate 19. As shown in FIG. The flat portion B of the guide plates 25ax, 25ay, 25b and the flat portion D of the adjustment plate 25z protrude into the space in the duct 12 while facing each other.

As shown in the enlarged view of FIG. 11 , the vertical height position of the planar portion D of the adjustment plate 25z is slightly higher than the vertical height position of the planar portion B of the guide plates 25ax, 25ay, 25b. In addition, when the position of the vertical height direction of the flat surface part D of the adjustment plate 25z is the same as the vertical height direction position of the flat surface part B of the guide plates 25ax, 25ay, 25b, the adjustment plate 25z and the guide plates 25ax, 25ay, 25b The air path between them is narrow and the ventilation resistance is large. This is not ideal.

Between the front edge Dn of the planar part D of the adjustment plate 25z and the front end Bm of the planar part B of the guide plates 25ax, 25ay, 25b, a predetermined interval is ensured in the left-right width direction so as not to hinder the progress of the cool air.

The cold air whose temperature has been lowered by exchanging heat with the evaporator 23 rises in the duct 12 . A part of the rising cold air collides with the lowermost guide plates 25ax, 25ay, and 25b, and is guided to the lowermost cold air outlet 7 . The cool air guided to the lowermost cool air outlet 7 is blown out from the lowermost cool air outlet 7 to the cooling space on the lowermost shelf 5 . The cold air blown out cools the merchandise on the lowest shelf 5 .

The remaining cold air that has not flowed into the lowermost cold air outlet 7 passes through the gap between the front edge Bm of the flat surface B of the lowermost guide plates 25ax, 25ay, 25b and the front edge Dn of the flat surface D of the adjusting plate 25z. As it rises, a part hits the flat part D of the adjustment plate 25z.

The cold air colliding with the flat surface portion D of the adjusting plate 25z is reduced in flow velocity and merges with the rising cold air through the gap. The cold air after merging also flows toward each guide plate 25ax, 25ay, and 25b side (near the center of the duct 12 ) without deflecting to the surface of the partition plate 19 . In this way, the cool air in the duct 12 is also efficiently guided from below to the cool air outlets 7 in the second stage and later.

If it is considered that the position in the vertical height direction of the plane part D of the adjustment plate 25z is lower than the position in the vertical height direction of the plane part B of the lowermost guide plates 25ax, 25ay, 25b, a part of the cold air rising through the evaporator 23 is first The flat portion D of the impact adjustment plate 25z. The cold airflow which collided with this adjustment plate 25z flows to the direction where the guide plate 25ax, 25ay, 25b of the lowermost part exists.

In this case, most of the cold air flows into the lowermost cold air outlet 7 along the lowermost guide plates 25ax, 25ay, and 25b. Of course, the amount of cool air guided to the air curtain outlet 10 decreases. In order to avoid such inconvenience, it is necessary to set the vertical height position of the planar portion D of the adjustment plate 25z higher than the vertical height position of the planar portion B of the guide plates 25ax, 25ay, 25b.

The adjustment plate 25z does not have to be arranged for every cool air outlet 7, and it is sufficient to arrange only the cold air outlet 7 at the lowest stage. That is to say, as mentioned above, the cold air passing through the adjustment plate 25z does not deflect to the surface of the partition plate 19, but flows through the center of the duct 12. Therefore, the adjustment plate 25z is not used, and only the guide plates 25ax, 25ay, and 25b can be used. Sufficient cold air is introduced from below to each cold air outlet 7 after the second stage.

By appropriately setting the protrusion dimensions of the guide plates 25ax, 25ay, and 25b of the respective cold air outlets 7, a sufficient amount of cold air for the air curtain can be guided to the air curtain outlet 10.

But, in order to be able to cool evenly the merchandise on each shelf 5 in the three-sided open-type showroom 4, as shown in FIG. The volume of air blown out from the center blowout part 7b of each cool air blowout port 7 is larger.

In order to achieve this, as shown in FIG. 12 , a notch Di is formed at a substantially central portion in the left-right width direction of the planar portion D of the adjustment plate 25z. Then, the protruding length T1 in the front-back depth direction of the flat portion D, the notch depth T2 in the front-back depth direction of the notch Di, the dimension Dz in the left-right width direction of the notch Di, and the length of the flat portion D other than the notch Di are appropriately adjusted. Dimensions Dx and Dy in the left and right width direction of the part.

Utilize this structure, as shown in FIG. Overall, the amount of cold air blown out from each cool air outlet 7 can be increased while preventing the amount of cold air reaching the air curtain outlets 10 from decreasing.

By appropriately setting the protruding length T1 of the front-rear depth direction of the planar portion D and the notch depth T2 of the notch Di in the front-rear depth direction, it is not necessary to make the protruding length T of the planar portion B of the guide plates 25ax and 25ay be the same as that of the guide plate 25b. The protruding length T of the planar part B is different. For example, if the protruding length T of the planar portion B of the guide plates 25ax, 25ay is the same as the protruding length T of the planar portion B of the guide plate 25b, the guide plates 25ax, 25ay and the guide plate 25b can be formed by bending a single plate.

Specific examples of each shelf 5 arranged in the showroom 4 are shown in FIGS. 14 and 15 .

The plan view shape of the frame 5 in FIG. 14 is generally rectangular, and especially the two corners Ga on the front side near the front opening 41 are chamfered to form a curved so-called R-shape. The frame 5 in FIG. 15 is generally rectangular in plan view, and especially the two corners Gb on the front side near the front opening 41 are chamfered to form a straight so-called C-shape.

By appropriately selecting the shape of these shelves 5 and the shape of the air curtain outlets 10 , it is possible to improve the air flow of the air curtain and improve the cooling efficiency of the products on each shelf 5 .

When the cold air outlet 7 , the air curtain outlet 10 , and the suction port 13 are single openings, foreign objects may be inserted into the cold air outlet 7 , the air curtain outlet 10 , and the suction port 13 intentionally or accidentally. If a foreign object is inserted, the cold air flow will be blocked, and the cooling efficiency will decrease.

As a countermeasure, it is necessary to make the cold air outlet 7 , the air curtain outlet 10 , and the suction inlet 13 as inconspicuous as possible, and to prevent foreign matter from being inserted into the cold air outlet 7 , the air curtain outlet 10 , and the suction inlet 13 .

Then, as shown in FIG. 16 , a steel plate 51 formed with a plurality of circular air holes Pa with relatively small diameters aligned vertically and horizontally is arranged at the cool air outlet 7 , the air curtain outlet 10 , and the suction inlet 13 .

As shown in FIG. 17 , instead of the steel plate 51 , a steel plate 52 forming a plurality of circular air holes Pb with relatively small diameters arranged in a zigzag may be used. As shown in FIG. 18 , instead of the steel plate 51 , a steel plate 53 formed with a plurality of elliptical air holes Pc of relatively small diameter arranged vertically and horizontally may be used. Alternatively, as shown in FIG. 19 , instead of the steel plate 51 , a steel plate 54 formed with a plurality of elliptical air holes Pd with relatively small diameters arranged vertically and horizontally may be used. Alternatively, as shown in FIG. 20 , instead of the steel plate 51 , a steel plate 55 forming a plurality of cross-shaped air holes Pe with relatively small diameters aligned vertically and horizontally may be arranged. The longitudinal direction of each vent hole Pc is along the left-right width direction of the main body 1 . The longitudinal direction of each vent hole Pd is along the direction orthogonal to the left-right width direction of the main body 1 .

In addition, a steel plate having a honeycomb structure or a network structure which is not shown may also be used. It is not limited to the steel plate, and plates of other materials may be used.

As described above, the main body 1 includes the three-sided open-type showroom 4, and the relationship between the dimension Fa in the left-right width direction and the dimension Fb in the front-back depth direction of the main body 1 is Fa≧Fb. The air curtain outlet 10 includes a left blowing portion 10ax formed along the upper edge 42a of the left side opening 42, a right blowing portion 10ay formed along the upper edge 43a of the right opening 43, and a right blowing portion 10ay formed along the front opening 41. The upper edge 41a of the center blowing part 10b is formed. The showroom 4 has shelves 5 in multiple stages, for example, in four stages. Each cold air outlet 7 faces the cooling space on each shelf 5 . And each cold air outlet 7 comprises the left blowing part 7ax that forms along the left end edge part 4x of the left and right width direction of back side 4a, the right side blowing part 7ay that forms along the right end edge part 4y of the left and right width direction of back side 4a, on the back side 4a is formed in the center blowout part 7b between each side blowout part 7ax, 7ay.

The cool air blown out from the cool air outlet 7 and the cool air blown out from the air curtain outlet 10 must use the cool air flowing out from the common evaporator 23 . Also, if the amount of cold air blown out from the cold air outlet 7 is more than necessary, the cold air for the air curtain blown out from the air curtain outlet 10 will be pushed to the outside from the front of the main body 1, losing the meaning of having an air curtain. Moreover, if the amount of cold air blown off from the air curtain outlet 10 is too large, the amount of cold air blown from the cold air outlet 7 decreases, and the efficiency of cooling the products on the shelves 5 decreases.

Therefore, in the total amount of cool air blown out from each cool air outlet 7 and the air curtain outlet 10, the ratio of the amount of cold air blown out from each cool air outlet 7 to the amount of cold air blown out from the air curtain outlet 10 is appropriately set. is very important.

As a kind of idea, in the state that the total blowing volume of the cold air blown out from each cold air outlet 7 and the air curtain outlet 10 is constant, the ratio of the air volume blown out by each cold air outlet 7 to the air volume blown out by the air curtain outlet 10 is changed. In this case, it is necessary to make the temperature change of the products on the shelf 5 at the highest level (level 1) and the temperature change of the products on the shelf 5 at the lowest level (level 4) fall within the allowable range.

FIG. 21 shows the relationship between the air curtain air volume ratio and the temperature of products in the showroom 4 .

The air curtain air volume ratio (%) of the horizontal axis of Fig. 21 is the amount of cold air blown from the air curtain outlet 10, that is, the "air curtain air volume" and the total cold air volume blown from the air curtain outlet 10 and each cold air outlet 7, that is, the "total air volume" The ratio (air curtain air volume/total air volume). The average temperature of each product placed in the four corners of the lowest shelf 5 is calculated by simulation, and a straight line of obtained values is approximated as "lowest product temperature change", which is shown by a right rising solid line in FIG. 21 . The average temperature of each product placed in the four corners of the top shelf 5 is obtained by simulation, and a straight line of obtained values is approximated as "the temperature change of the top product", which is represented by a right descending solid line in FIG. 21 .

Usually, an appropriate reference value for the product temperature in the showcase is set within the range "5°C to 9°C" of ±2°C centered on a target value, for example, 7°C. The product temperature on, for example, the shelf 5 on the second stage, which is an intermediate stage, corresponds to the "change in product temperature at the top stage" in FIG. 21 . The product temperature on, for example, the shelf 5 of the third stage, which is an intermediate stage, corresponds to the "change in product temperature at the lowest stage" in FIG. 21 .

Even if you want to change the air curtain air volume ratio in the range of 40% to 85% in the "highest product temperature change" in Fig. 21, it is usually within the above-mentioned setting range "5°C to 9°C". The "product temperature change at the lowest stage" in FIG. 21 is in the above-mentioned setting range "5°C to 9°C" when the air curtain air volume ratio is a value within the range of 48% to 78%.

It is preferable to set the air curtain air volume ratio to a value in the range of 55% to 65%, so that the fluctuation of product temperature is within the range of ±1°C around the target value of 7°C, that is, in the range of "6°C to 8°C".

As a concept obtained from the data in FIG. 21 , if the amount of cool air blown out from the air curtain outlet 10 is large (the air curtain air volume ratio is large), the products on the upper shelf 5 tend to be cooled well. If the amount of cool air blown out from each cool air outlet 7 is large (the air curtain air volume ratio is small), it tends to cool the products on the shelf 5 on the lower stage side better.

On the other hand, in each shelf 5 in the showroom 4, the commodity temperature on the shelf 5 on the top 2 stages (the uppermost stage and the second stage) is more affected by the cold air for the air curtain blown out from the air curtain outlet 10 than by the cold air from each shelf. The influence of the cool air blown out from the cool air outlet 7 is large. The commodity temperature on the shelf 5 of lower 2 stages (the 3rd stage and the lowest stage) is affected by the cold air blown out from each cold air outlet 7 than by the cold air that is used for the air curtain.

FIG. 22 shows the relationship between the central air volume ratio of the air curtain outlet 10 and the product temperature in the showroom 4 . The so-called central air volume ratio refers to the amount of cold air blown out from the central blowing portion 10b of the air curtain outlet 10, that is, the “central air volume” and the total amount of cold air blown from each side blowing portion 10ax, 10ay of the air curtain outlet 10 and the central blowing portion 10b. That is, the ratio of "total air volume" (central air volume/total air volume).

The average temperature of each product placed in the four corners of the upper 2nd stage (the uppermost stage and the 2nd stage) shelf 5 that is easily affected by the air curtain is obtained by simulation, and a plurality of obtained values are represented as "product temperature changes" in FIG. 22 as The solid line indicates.

The central air volume ratio is set so that the product temperature on the shelf 5 on the upper 2nd stage (the uppermost stage and the 2nd stage) is within the range of ±2°C centered on the target value, for example, 7°C, that is, "5°C to 9°C". It may be a value included in the range of 31% to 87%.

The product temperature on the upper second-stage shelf 5 is the lowest when the center air volume ratio is 55%, and rises when the center air volume ratio is greater than this 55% or less than this 55%. When the central air volume ratio is 55%, the amount of cool air blown out from the left blowing portion 10ax and the right blowing portion 10ay is 42%.

It is preferable to set the central air volume ratio to a value within the range of 35% to 82%, so that the product temperature fluctuation is within the range of ±1°C around the target value of 7°C, that is, "6°C to 8°C".

By setting such a central air volume ratio, air curtains with appropriate air volumes can be formed on the front opening 41 , the left side opening 42 , and the right side opening 43 of the showroom 4 . With this air curtain, it is possible to prevent outside air from intruding into the showroom 4 from outside the main body 1 . Since the intrusion of external air can be prevented, the cooling efficiency of the commodities in the showroom 4 can be improved, and frost can be prevented from forming on the commodities in the showroom 4 at the same time.

On the other hand, the air path from the air curtain outlet 10 on the ceiling surface 4b to the suction inlet 13 on the bottom surface 4c is set in the vertical direction or within an angular range of ±5° based on the vertical direction. This setting can make the air curtain stable and not easy to collapse. With this, it is possible to more reliably prevent outside air from intruding into the showroom 4 and further improve the cooling efficiency of the products in the showroom 4 .

In addition, the appearance of the main body 1 which is a modification example of an open showcase is shown in FIG.23 and FIG.24. FIG. 23 shows the appearance of the main body 1 viewed from the front, and FIG. 24 shows the appearance of the main body 1 viewed from the side.

The guide plate 32 is arranged at the left side opening 42 of the main body 1 . The guide plate 33 is arranged in the right side opening 43 of the main body 1 .

The guide plate 32 closes a partial area on the rear side in the front-rear depth direction of the entire area of the right side opening 42 . The cool air flow blown out from the left blowing portion 7ax of each cool air blowing port 7 is straightened along the inner peripheral surface of the guide plate 32 . The rectified cool air flows efficiently and smoothly along the left side opening 42 , and is not easy to mix with the air outside the left side opening 42 . The space on the back side in the front-back depth direction of the showroom 4 is hidden by the guide plate 32, but the hidden space is only a part of the back side.

The guide plate 33 closes a partial area on the rear side in the front-back depth direction of the entire area of the right side opening 43 . The cool air flow blown out from the right blowing portion 7ay of each cool air blowing port 7 is straightened along the inner peripheral surface of the guide plate 33 . The rectified cold air flows efficiently and smoothly along the left side opening 43 , and is not easy to mix with the air outside the left side opening 43 . The inner space in the front-back depth direction of the showroom 4 is hidden by the guide plate 33, but the hidden space is only a part of the inner side.

By arranging the guide plates 32 and 33 in this way, the cooling efficiency of the products in the showroom 4 can be further improved. Utilizing the guide plate 32 to close the left side opening 42 is only partially closed, so the observation in the showroom 4 through the left side opening 42 can be fully guaranteed, and it is also easy to take out commodities from the left side opening 42 . Owing to utilizing guide plate 33 to close right side opening 43 is only partially closed, by right side opening 43 to the observation in showroom 4 can be fully guaranteed, also easy to take out commodity from right side opening 43 simultaneously.

Other configurations of the main body 1 are the same as those of the above-mentioned embodiment. Therefore, its description is omitted.

The above-mentioned embodiments and modifications are presented as examples, and are not intended to limit the scope of the embodiments and modifications. These new embodiments and modified examples can be implemented in other various forms, and various omissions, substitutions, and changes are possible without departing from the gist. These embodiments and modified examples are included in the scope or gist of the invention, and are also included in the invention described in the claims and the equivalent range thereof.

Industrial applicability

The open display case according to the embodiment of the present invention can be used in shops such as small-scale convenience stores and small-scale supermarkets.

Claims (9)

1. An open display cabinet, characterized in that it has The relationship between the dimension Fa in the left and right width direction and the dimension Fb in the front and rear depth direction is the main body of Fa≧Fb, Arranged in the main body, and has a front opening, a left side opening, and a right side opening, through which the front opening, left side opening, and right side opening are exposed to the outside of the main body room, and A cooling unit that supplies cool air to the showroom. 2. The open display cabinet according to claim 1, characterized in that, The cooling section contains A refrigeration cycle composed of compressors, condensers, expansion valves, and evaporators, a fan that draws air in the showroom to the evaporator, and A duct directing cold air passing through the evaporator to the showroom. 3. The open display cabinet according to claim 2, wherein the cooling unit also includes It is arranged on the back of the showroom, and the cold air in the pipe is blown to a plurality of cold air outlets in the showroom, An air curtain outlet for blowing cold air in the duct as cold air for an air curtain flowing along the front opening, the left side opening, and the right side opening arranged on the ceiling surface of the showroom, and The suction port is arranged on the bottom surface of the showroom and sucks the air in the showroom and the cold air for the air curtain. 4. The open display cabinet according to claim 3, characterized in that, The plurality of cool air outlets include a vertically elongated left blowing portion formed adjacent to the left side opening, and a vertically elongated left blowing portion formed adjacent to the right side opening. At the position, the vertically elongated right blowing part that is longer in the vertical height direction, and the horizontally long central blowing part that is formed between these left blowing parts and the right blowing parts and extends in the left and right width direction, The air curtain blowing outlet includes a vertically elongated left blowing portion formed along the upper edge of the left side opening and having a longer front-rear depth direction, and formed along the upper edge of the right side opening. The vertically elongated right blowing part which is long in the direction, and the horizontally long center blowing part which is arranged between these left blowing parts and the right blowing parts and extends in the left and right width direction, The suction port includes a vertically elongated left blowing portion formed along the lower edge of the left side opening and formed along the lower edge of the right side opening. The long vertically elongated right blowout part and the horizontally long center blowout part which are arranged between these left blowout parts and the right blowout parts and extend in the left-right width direction. 5. The open display cabinet according to claim 3, characterized in that, The cooling unit also includes A part of the cold air in the duct is guided to a plurality of first guide plates of the left blowing part and the right blowing part of each cold air blowing port, and A part of the cold air in the duct is guided to a plurality of second guide plates at the center blowout portions of the cool air blowout ports. 6. The open display cabinet according to claim 5, characterized in that, The cooling unit also includes It is adjusted so that the cold airflow in the duct also flows to at least one adjustment plate on the side of each of the first guide plates and each of the second guide plates. 7. The open display cabinet according to claim 3, characterized in that, It also includes a multi-stage shelf for product placement that is arranged in the showroom and has chamfered corners on the front side near the front opening, The cooling air outlets are arranged at positions corresponding to the cooling spaces on the shelf plates. 8. The open display cabinet according to claim 3, characterized in that, The ratio of the amount of cold air blown out from the air curtain outlet to the total amount of cold air blown out from the air curtain outlet and each of the cold air outlets is in the range of 48% to 78%, preferably 55% to 65%. %In the range. 9. The open display cabinet according to claim 3, characterized in that, The ratio of the amount of cold air blown out from the center blowout part of the air curtain outlet to the total amount of cold air blown out from the left blowout part, right blowout part, and center blowout part of the air curtain outlet, that is, the central air volume/total air volume is 31% to 31%. In the range of 87%, preferably in the range of 35% to 82%.