JPH06265255A - Open showcase ventilation structure - Google Patents

Abstract

(57) [Summary] [Purpose] A case and a partition lined with this case are surrounded by air outlets and suction ports along both the front and bottom edges of the case front opening at both ends. A front opening of the case that circulates in the case after being sucked by a blower from the suction port into the ventilation path where a dead end is formed between the evaporator and the partition wall that communicates with the downstream side of the evaporator and cooled by the evaporator. Displaying in the case by forming an air curtain that covers the inside of the case. A part of the circulation flow that cools and keeps the products displayed in the case cool The displayed products, including the lower part of the case, are uniformly cooled to a predetermined temperature. [Composition] A partition in which the front end face is in contact with the back surface of the partition wall 6 in such a manner that the bag passage 26 is vertically divided just below the lowest ventilation hole 19 in the ventilation hole 19 formed in the partition wall 6 facing the dead end passage 26. 32, and the front opening 2 of the case 1 is covered with a plurality of air curtains 28, 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case whose front surface is open and a partition wall which is lined at intervals along the inner surface of the case, and which is formed on the upper and lower edges of the front opening of the case facing each other. The products displayed in the case are displayed in the case, including multiple display shelves arranged vertically in the case by the circulation flow of air that circulates in the case and becomes cold air that flows through the ventilation passage that opens along It relates to the ventilation passage structure of an open showcase that is refrigerated.

[0002]

2. Description of the Related Art In an open showcase for refrigerating products displayed and displayed in a case with an opening on the front, the case where the products are displayed and displayed inside is formed of a heat insulating wall,
In this case, partition walls are generally lined at intervals along the inner surface of the case. A space surrounded by the partition wall and the case forms an air passage, and the air passage has openings along both upper and lower edges of the front opening of the case, and the opening surfaces face each other vertically. And a suction port is formed. The air in the case is blown from the suction port by a blower installed in the ventilation passage in a pair with the evaporator, sucked into the ventilation passage, cooled by the evaporator to become cold air, and circulates in the case. Form a stream. A part of this circulation flow is blown out from a plurality of ventilation holes formed in the partition wall to cool the products displayed and displayed in the case including a plurality of display shelves arranged vertically in the case. Also,
A part of the circulating flow forms an air curtain that covers the front opening of the blowing case from the air outlet to thermally block the inside and outside of the case and keep the products displayed and displayed in the case cool.
However, a part of the circulation flow forming the air curtain entrains the hot and humid air outside the case, which causes an increase in frost on the outer peripheral surface of the evaporator and reduces the cooling performance and cooling performance of the case. In addition, the amount of hot and humid air outside the case, which is caught by the air curtain, increases as it approaches the suction port where the circulating flow is sucked again. As a result, the heat insulation effect of the air curtain is reduced toward the lower part of the case, so that the products displayed in the case are not uniformly cooled to a predetermined temperature, resulting in uneven temperature. Cooling of the products displayed on the front side tends to be insufficient.

On the other hand, this type of open showcase is
It is a self-service device that allows customers to pick up and purchase the products that are displayed and displayed in the case by stacking them in the lower part of the case or displaying them on a display shelf. Therefore, even if the product that was initially displayed evenly in the case was purchased,
When it is taken out from the case, the piles will collapse and it will be evenly displayed in the case. As a result, some of the air inlets and ventilation holes are blocked or blocked by the products displayed in the case, and the heat insulation effect of the air curtain is not fully exerted, and the circulation flow is sufficient from the ventilation holes. The part that does not blow out easily occurs in the case, especially in the lower part of the case. This also causes the products displayed in the lower part of the case to be unevenly cooled to a predetermined temperature, resulting in uneven temperature, and the products that are not cooled to a predetermined temperature may deteriorate in quality quickly and lose their commercial value early. become.

In order to prevent this, there is an open showcase in which a dead-end path communicating with the downstream side of the evaporator is formed between the evaporator and the partition wall in the lower part of the ventilation path. Such an open showcase is constructed so that the circulation flow immediately after being cooled by the evaporator is blown out from the ventilation holes through the blind alley toward the products displayed and displayed in the lower part of the case. FIG. 2 shows one of conventional examples of the air passage structure of a showcase. FIG. 2 shows a structure of a ventilation path structure of a conventional open showcase, (A) is a left side vertical sectional view showing an internal structure of the open showcase, and (B) is an enlarged view of a main part of (A). The right side of the figure is the front side.

In FIG. 2, reference numeral 1 denotes a case having a front opening 2 formed of a heat insulating wall and opening to the front. The case 1 is composed of a case body 3 which is formed of a heat insulating wall and which has front and left and right side surfaces open and has a C-shaped side vertical cross section, and side plates 4 which cover the left and right side surface openings of the case body 3. Has been done. In the case 1, partition walls 5 and 6 having a C-shaped vertical cross-section, which are open at the front surface and both left and right side surfaces, are provided with the partition wall 6 as an inner side and with the inner peripheral surface of the case body 3 and a space therebetween. The case body 3 is placed and lined along the inner peripheral surface of the case body 3. The partition wall 6 lined with the case main body 3 includes a back plate 7 forming a ceiling surface and a depth side wall surface and having a substantially vertical L-shaped side cross section, a flat bottom plate 8 forming a bottom surface, and a rising surface on the front side. Is formed of a guard 9 having a substantially vertical L-shaped cross section. On the other hand, the partition wall 5 lined with the case body 3 forms a ceiling surface, a depth side wall surface and a depth side bottom surface, and a partition body 10 having a substantially C-shaped side vertical cross section, and a rising surface on the front side and a side vertical cross section. Is composed of a substantially J-shaped guard 11.
A space surrounded by the partition wall 5 having the guard 11 as a component and the case 1 forms an air passage 12, and a space surrounded by the partition walls 5, 6 and the case 1 forms an air passage 13. At both ends of each of the ventilation passages 12 and 13,
Suction ports 14 and 15 which open along the upper and lower edges of the front opening 2 and whose opening surfaces face each other vertically and which open on the upper surface along the lower edge of the front opening 2 and on the lower surface along the upper edge of the front opening 2. Opening air outlets 16 and 17 are formed, respectively. The outlets 16 and 17 are covered with a honeycomb-shaped rectifying body 18 whose upper and lower end surfaces are open, and the vertical portion of the back plate 7 has a plurality of air passages 13 that communicate with the front face of the back plate 7. Ventilation holes 19 are formed. Further, in the vertical portion of the back plate 7, vertically arranged in the case 1,
A plurality of display shelves 20 that display and display products are cantilevered at their rear ends. This display shelf 20 has this display shelf 2
An illumination lamp 21 for illuminating the products displayed and displayed on the lower side of 0 is suspended and supported on the lower side of the front end portion.
Supports 22 each having a chevron cross section are fixed to the surfaces facing each other. The pair of supports 22 support a shelf-like shelf plate 23 on which a product is placed, the front and rear ends thereof being supported.
An evaporator 25 is provided at the inner bottom of the case 1, which is in the lower part of the lower part 3, in a pair with the blower 24 provided on the front side and with the rear surface along the inner surface of the partition body 10. The upper end of this evaporator 25 is located higher than the lowest display shelf 20, and
And the back plate 7 forming the partition wall 6 between the evaporator 25.
An up-down bag path 26 is formed that communicates with the ventilation path 13 on the further downstream side. A plurality of ventilation holes 19 are also formed in the portion of the back plate 7 facing the dead end 26, and the rear end of the support member 27 that supports the blower 24 is fixed to the upper surface of the lower end front end of the partition body 10. The end is in contact with the front surface of the evaporator 25.

In the conventional open showcase thus constructed, the air in the case 1 sucked into the ventilation passages 12 and 13 from the suction ports 14 and 15 by the blower 24 is blown out from the air outlets 16 and 17, respectively. Is rectified by the rectifying body 18 and blows out as a laminar flow. Then, the air curtains 28 and 29 that cover the front opening 2 are formed, and the suction ports 14 and 29 are formed again.
Circulation flows 30, 3 that are sucked from 15 and circulate in the case 1
1 is formed. The circulation flow 31 is cooled by the evaporator 25 to become cold air and circulates in the case 1, and a part of the circulation flow 31 is blown out from the air outlet 17 to cover the front opening 2.
9 is formed, and a part thereof is blown out forward from the inside of the ventilation passage 13 through the ventilation hole 19. Due to a part of the circulation flow 31 blown out from the inside of the ventilation passage 13, the display shelf 2
0, the products displayed on the shelf board 23, etc. are cooled and refrigerated in the case 1. Among the products that are refrigerated in the case 1, the products displayed and displayed in the lower part of the case 1 such as on the shelf plate 23 enter the bag alley 26, and the part of the back plate 7 where the back surface faces the bag alley 26. It is cooled in the portion of the circulation flow 31 immediately after being cooled in the evaporator 25, which is blown out forward from the formed ventilation hole 19.

[0007]

By the way, in such a conventional ventilation structure for an open showcase, the ventilation passage 12 is formed in the space surrounded by the partition wall 5 and the case 1, and the partition walls 5, 6 and the case 1 are connected together. Ventilation paths 13 are formed in the space surrounded by. Further, a suction port 15 and a blowout port 17 which are opened along both upper and lower edges of the front opening 2 of the case 1 and whose opening surfaces face each other vertically are formed at both ends of the ventilation passage 13, respectively. Ventilation holes 19 leading from the inside of the ventilation passage 13 to the front side of the rear plate 7 are formed in the vertical portion of the rear plate 7, and a blower 24 and an uppermost display shelf at the bottom are provided at the bottom of the ventilation passage 13. Evaporator 25 higher than 20
Is provided. Further, the ventilation passage 13 has an evaporator 2
5 and the back plate 7 forming the partition wall 6 between the ventilation passages 13
A dead end 26 is formed which communicates with the downstream side of the evaporator 25.

As a result, the circulation flow 3 is circulated in the case 1 through the ventilation passage 13 and is cooled by the evaporator 25 to become cool air.
In the part of 1 which blows out from the inside of the ventilation path 13 through the ventilation hole 19, the products displayed on the display shelf 20, the shelf board 23 and the like and displayed in the case 1 are cooled. In addition, this product has a front opening 2 formed by a circulation flow 31 and a circulation flow 30 that circulates in the case 1 through the ventilation passage 12.
It is kept cool by the air curtains 28 and 29 covering it.

However, the airflow formed by a part of the circulation flow 31 that cools the products displayed in the blowing case 1 forward from the ventilation passage 13 including the dead end 26 through the ventilation hole 19 is from the left side. Looking, it flows while turning in the case 1. Then, the direction of this turning is based on the display shelf 2 at the bottom.
Above 0, the flow is clockwise along the flow of the air curtains 28 and 29, but below the display shelf 20 at the bottom, it is counterclockwise against the flow of the air curtains 28 and 29.
Therefore, the air curtains 28 and 29 are not disturbed so much above the lowermost display rack 20 by the airflow formed by a part of the circulation flow 31 that is blown forward from the inside of the ventilation passage 13 through the ventilation holes 19, Under the lower display shelves 20, it is greatly disturbed. On the other hand, the air curtains 28 and 29 are the case 1
Suck in the outside hot and humid air, or the suction ports 14, 15
Is partially blocked by the products displayed in the case 1, and the heat insulation effect of the air curtains 28, 29 becomes insufficient as the air curtains 28, 29 are approached. The air flow, which should compensate for this, formed by a part of the circulation flow 31 that flows into the dead end 26 immediately after being cooled by the evaporator 25 and blows out forward from the ventilation hole 19, acts in reverse, and the suction ports 14, 15 The heat insulation effect of the air curtains 28 and 29 is further made insufficient as the temperature approaches. As a result, the cold insulation performance of the case 1 is reduced to increase the amount of frost on the outer peripheral surface of the evaporator 25, and the cooling performance of the case 1 is degraded to cause uneven temperature in the products displayed in the case 1. There is a problem.
Immediately after being cooled by the evaporator 25, it is directly exposed to the airflow formed by a part of the circulation flow 31 that enters the dead end 26 and blows forward from the ventilation hole 19 and is supercooled and frozen. There is also a problem that the quality of the above-mentioned products, the products on the front side of the shelf plate 23 that are not cooled to a predetermined temperature, deteriorates quickly, and the commercial value is lost early.

[0010]

In order to solve the above-mentioned problems, according to the present invention, the case is surrounded by a case whose front surface is open and a partition lined along the inner surface of the case with a space therebetween. At the same time, an air passage is formed along the opposite upper and lower edges of the front opening of the case, each of which has an air outlet and an air inlet with the opening surfaces facing vertically. Circulation in which air in the case, which is blown by a blower arranged in a pair with the device and sucked into the ventilation passage from the suction port, is cooled by the evaporator to become cold air and circulates in the case. Forming a flow, a plurality of the ventilation passages formed between the evaporator and the partition wall, a plurality of which are formed in the partition wall, including a portion facing the vertical dead end, which communicates with the downstream side of the evaporator, Connects inside and outside the passage An air curtain that blows out from the ventilation hole and cools the products displayed and displayed in the case including a plurality of display shelves arranged vertically arranged in the case, and blows out from the air outlet to cover the front opening. In the ventilation path structure of an open showcase that forms and keeps the product cool, in the ventilation holes formed in the partition wall portion facing the bag alley, the bag alley is vertically moved just below the lowest ventilation hole. A partition shall be provided.

In addition to the above, it is assumed that the partition is a partition in which the front end surface of the partition is in contact with the back surface of the partition wall. Further, in addition to the above, the front opening of the case is covered with a plurality of air curtains.

[0012]

The present invention is surrounded by a case having an open front surface and partition walls lined at intervals along the inner surface of the case, and is opened along both upper and lower edges of the front opening of the case facing each other. Then, the air is blown by the blower installed in the lower part of the ventilation passage formed with the outlet and the suction opening whose upper and lower surfaces face each other vertically and paired with the evaporator, and is sucked into the ventilation passage from the suction inlet. It cools by the evaporator and becomes cold air to form a circulating flow that circulates in the case, and cools the products displayed in the case including a plurality of display shelves arranged vertically in the case. In addition, an air curtain that blows out from the air outlet to cover the front opening is formed to keep the product cool, the air in the case is blown out, and a ventilation hole communicating with the inside and outside of the passage is provided with the evaporator. The partition wall formed between the partition wall and a plurality of partition walls formed in the ventilation path, which communicates with the downstream side of the evaporator and faces the dead end in the vertical direction, is formed in a portion facing the dead end. Since a partition for partitioning the dead end into upper and lower parts of the ventilation hole is provided directly below the lowest ventilation hole, a portion of the circulation flow that flows into and flows down into the dead end immediately after being cooled by the evaporator. Can be blocked by a partition, which increases the static pressure of the part of the circulation flow that is blocked by this partition, so this part can be blocked from the ventilation holes formed in the partition wall facing the dead end. It can be blown out almost horizontally to the front inside. As a result, the products displayed on the lower side of the lowermost display shelf in the blowing case are blown forward from the ventilation hole through the dead end in the ventilation passage, and the circulation flow immediately after being cooled by the evaporator is reduced. The airflow formed by a part of the airflow can be made to follow the flow of the air curtain by turning the airflow in the case clockwise from the left side and directly to the products displayed in the case. You can prevent it from spraying.

In addition to the above, since the partition is a partition whose front end surface abuts against the back surface of the partition wall, the partition wall reinforces the strength of the partition wall so that the partition wall is bent, distorted or warped. Can be prevented. Furthermore, in addition to the above, since the front opening of the case is covered with a plurality of air curtains, it is possible to greatly improve the cold insulation performance of the case, which keeps the products displayed in the case cold.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows the structure of the ventilation path structure of an open showcase according to one embodiment of the present invention. (A) is a left-side longitudinal sectional view showing the internal structure of the open showcase, and (B) is a main part of (A). In the enlarged views, the right side of each figure is the front side. The same or similar parts as in FIG. 2 are designated by the same reference numerals.

In FIG. 1, reference numeral 1 denotes a case formed of a heat insulating wall and having a front opening 2 opening to the front. This case 1 is formed of a heat insulating wall and has both front and left and right side surfaces open. Body 3 and this case body 3
The side plate 4 covers the openings on both the left and right sides. In the case 1, the partition walls 5 and 6 are provided on the case body 3 along the inner peripheral surface of the case main body 3 with the partition wall 6 inside and with the inner peripheral surface of the case main body 3 and a space therebetween. It is lined. The partition wall 6 lined in the case body 3 is composed of the back plate 7, the bottom plate 8 and the guard 9, and the partition wall 5 lined in the case body 3 is composed of the partition wall body 10 and the guard 11. A space surrounded by the partition wall 5 having the guard 11 as a component and the case 1 forms an air passage 12, and a space surrounded by the partition walls 5, 6 and the case 1 forms an air passage 13. This ventilation path 12,13
Suction ports 14 and 15 and blowout ports 16 and 17 are formed at both ends of the front opening 2 along the upper and lower edges of the front opening 2 and the opening surfaces face each other vertically. The air outlets 16 and 17 are covered with a rectifying body 18, and the rear plate 7
A plurality of ventilation holes 19 communicating from the inside of the ventilation passage 13 to the front surface side of the back plate 7 are formed in the vertical portion of. Further, a vertical portion of the back plate 7 cantilever-supports the rear ends of a plurality of display shelves 20 arranged vertically in the case 1. This display shelf 2
An illuminating lamp 21 for illuminating the products displayed and displayed on the lower side of 0 is suspended and supported on the lower side of the front end of the display shelf 20.
Supports 22 are fixed to the surfaces of the guard 9 and the surfaces of the guard 9 facing each other. The pair of supports 22 supports both front and rear ends of a shelf plate 23 on which products are placed, and the inner bottom of the case 1 in the lower part of the ventilation passage 13 is paired with a fan 24 arranged on the front side to form a partition wall. An evaporator 25 is arranged along the rear surface of the main body 10. The upper end of the evaporator 25 is located at a position higher than the lowest display rack 20, and between the evaporator 25 and the back plate 7 forming the partition wall 6 is provided in the ventilation passage 13 on the downstream side of the evaporator 25. A vertically extending blind path 26 is formed. A plurality of ventilation holes 1 are also provided in the part of the back plate 7 facing the dead end 26.
9 is formed, the upper end of the dead end is directly under the lowest ventilation hole 19 in this ventilation hole 19, and the front end is the partition wall 6.
It is divided into upper and lower parts by a partition 32 having an L-shaped side vertical cross section, which is brought into contact with the rear surface and the rear end is fixed to the front surface of the evaporator 25. Further, on the front surface of the evaporator 25, a support member 2 for supporting the blower 24, having a front end fixed to the lower end front surface of the partition main body 10, is provided.
The rear end of the case 7 is in contact, and the other internal structure of the case 1 is the same as that of the conventional example described above.

In the above-described structure, in the open showcase provided with the ventilation path structure of the open showcase of the present invention, the products displayed in the case 1 are cooled, and the ventilation path structure of the open showcase of the present invention. The function of will be described below. In the ventilation channel structure of the open showcase according to the present invention, the ventilation channel 12 is formed in the space surrounded by the partition wall 5 and the case 1, and the ventilation channel 13 is formed in the space surrounded by the partition walls 5, 6 and the case 1. There is. In addition, the suction ports 14 and 15 and the blowout ports 16 that open along the upper and lower edges of the front opening 2 and have their opening surfaces facing upward and downward,
17 are formed at both ends of the ventilation paths 12 and 13, respectively. Further, a plurality of ventilation holes 19 communicating from the inside of the ventilation passages 12 and 13 to the front side of the back plate 7 are also formed in the vertical portion of the back plate 7, and the blower 24 and the evaporator are provided at the bottom of the ventilation passage 13. 25 and the like are provided. Furthermore, an evaporator 25,
Between the rear plate 7 that constitutes the partition wall 6 and the ventilation path 13,
A dead end 26 is formed which communicates with the evaporator 25 on the downstream side. A plurality of ventilation holes 19 are also formed in the portion of the rear plate 7 facing the dead end 26, and the ventilation holes 19 are
Immediately below the lowest ventilation hole 19, the upper end of the dead end 26 is divided into upper and lower parts by a partition 32.

As a result, the products displayed and displayed in the case 1 are ventilated from the ventilation passage 13 including the dead end 26 to the ventilation holes 19.
It is cooled in the part of the circulation flow 31 which is blown out through the through. At the same time, the circulation flow 30 that forms the air curtain 28 that covers the blowout front opening 2 from the outlet 16 and the portion of the circulation flow 31 that forms the air curtain 29 that covers the blowout front opening 2 from the outlet 17 are kept cool. . The portion of the circulating flow 31 that enters the bag alley 26 immediately after being cooled by the evaporator 25 and flows down is temporarily blocked by the partition 32 to increase the static pressure, and the back surface of the back plate 7 faces the bag alley 26. The air is blown out substantially horizontally toward the front inside the case 1 from the ventilation hole 19 formed in the portion. Then, below the lowest display shelf 20, an airflow is formed, which flows along the flow of the air curtains 28 and 29 while turning clockwise when viewed from the left side. This air flow
The air curtains 28 and 29 are not disturbed, and the shelf 2
3 The products displayed in the lower part of the case 1 such as the top are cooled uniformly from above, not locally but locally. As a result, the air curtains 28 and 29 may excessively entrap hot and humid air outside the case 1, or the products on the depth side of the shelf plate 23 may be supercooled and frozen, or the products on the front surface of the shelf plate 23 may be predetermined. It will not be cooled to the temperature of.

Therefore, the cold insulation performance of the case 1 is lowered to increase the amount of frost formed on the outer peripheral surface of the evaporator 25, or the cooling performance of the case 1 is degraded to cause uneven temperature in the products displayed in the case 1. Will not occur and the product will lose its product value early. As a result, the products displayed and displayed in the case 1, including the lower part of the case 1 such as on the shelf plate 23, can be cooled to a predetermined temperature and kept cool, and can be satisfactorily refrigerated in the case 1.

[0019]

According to the present invention, a case whose front surface is opened and a case which is surrounded by partition walls which are lined at intervals along the inner surface of the case and which are opposed to each other at upper and lower edges of the front surface opening of the case. Is blown by a blower installed in a lower part of the ventilation passage formed with a blower outlet and a suction opening, the opening surfaces of which are vertically opposed to each other and which face each other vertically, and the ventilation passage is blown from the suction opening. It is sucked in and cooled by the evaporator to become cold air, forming a circulation flow circulating in the case, and is displayed and displayed in the case including a plurality of display shelves arranged vertically in the case. Along with cooling the product, form an air curtain that blows out from the air outlet to cover the front opening to keep the product cool, air in the case blows out, and a ventilation hole communicating with the inside and outside of the passage, The portion of the partition wall formed between the evaporator and the partition wall, which communicates to the downstream side of the evaporator, including the portion facing the vertical bag path, and the partition wall facing the bag path. Among the ventilation holes formed in the above, since it is provided with a partition that vertically partitions the dead end of the bag directly below the lowest ventilation hole, the inside of the ventilation path passes through the dead end of the dead end from the ventilation hole. , The airflow that forms a part of the circulation flow immediately after being cooled by the evaporator, which cools the products displayed on the lower side of the bottom display shelf.
The swirling direction of the air flow swirling in the case can be made to follow the flow of the air curtain when viewed from the left side, and the products displayed in the case can be prevented from directly spraying. This reduces the amount of hot and humid air that the air curtain engulfs outside the case, and keeps the products displayed in the case, including those displayed in the lower part of the case including on the shelf, at a predetermined temperature. Can be cooled as well.

In addition to the above, since the partition is a partition whose front end surface abuts against the back surface of the partition wall, the partition wall reinforces the strength of the partition wall so that the partition wall is bent, warped or warped. It is possible to prevent the deterioration of the case and increase the rigidity of the case. Furthermore, in addition to the above, since the front opening of the case is covered with multiple air curtains,
It is possible to significantly improve the cold insulation performance of the case, which cools the products displayed in the case, and to reduce the temperature unevenness of the products displayed in the case.

As a result, the air curtain is not disturbed by the airflow that forms a part of the circulation flow from the ventilation passage through the blind alleys and forwards from the ventilation hole, and is displayed and displayed in the lower part of the case including on the shelf board. It is possible to provide a case in which the products displayed in the case including the above products can be uniformly cooled to a predetermined temperature, and the case having excellent cooling performance and cold storage performance and high rigidity can be provided.

[Brief description of drawings]

FIG. 1 shows a configuration of a ventilation passage structure of an open showcase according to one embodiment of the present invention, (A) is a left-side longitudinal sectional view showing an internal configuration of the open showcase, and (B) is a diagram of (A). Enlarged view of essential parts

2A and 2B show a structure of a ventilation path structure of a conventional open showcase, where FIG. 2A is a left-side vertical sectional view showing the internal structure of the open showcase, and FIG. 2B is an enlarged view of a main part of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 case 2 front opening 3 case body 4 side plate 5 partition wall 6 partition wall 7 back plate 8 bottom plate 9 guard 10 partition wall body 11 guard 12 ventilation passage 13 ventilation passage 14 suction inlet 15 suction inlet 16 blowing outlet 17 blowing outlet 18 rectifying body 19 ventilation hole 20 Display Shelf 21 Illuminating Light 22 Support 23 Shelf Board 24 Blower 25 Evaporator 26 Blind Path 27 Supporting Member 28 Air Curtain 29 Air Curtain 30 Circulating Flow 31 Circulating Flow 32 Partition

Claims (3)

[Claims] 1. A case having an open front surface, and a case which is surrounded by partition walls which are lined at intervals along the inner surface of the case, and which are open along both upper and lower edges of the front opening of the case facing each other. The air passage is provided with an air outlet and an air inlet whose opening surfaces face each other vertically, and is blown by a fan installed in a lower portion of the air passage in a pair with the evaporator, and from the air inlet to the air passage. Sucked inside,
The air in the case is cooled by the evaporator and becomes cold air to form a circulation flow that circulates in the case, and is formed between the evaporator and the partition wall, in the ventilation passage, from the evaporator. Includes a plurality of display shelves, which are formed in the partition wall including a portion that faces the downstream side blind path, which communicates to the downstream side, blows out from ventilation holes that communicate with the inside and outside of the passage and is arranged vertically in the case. In the ventilation path structure of an open showcase, which cools the products displayed in the case, forms an air curtain that blows out from the outlet to cover the front opening, and cools the products.
A ventilation passage for an open showcase, characterized in that it has a partition for vertically partitioning the blind alley immediately below the lowest ventilation hole of the ventilation holes formed in the partition wall facing the blind alley. Construction. 2. The ventilation structure for an open showcase according to claim 1, wherein the partition is a partition whose front end face abuts against the back surface of the partition wall. 3. The ventilation structure for an open showcase according to claim 1, wherein the front opening of the case is covered with a plurality of air curtains.