Cooling storage

Abstract

To provide a refrigerated storage unit that simplifies cleaning. [Solution] The cooling storage facility comprises an insulating wall, a display room on which display items can be displayed, a cooling duct provided between the insulating wall and the display room so as to surround the display room and through which cold air circulates, a cold air outlet provided at one end of the cooling duct for blowing out cold air, and a cold air intake provided at the other end of the cooling duct through which the cold air blown out from the cold air outlet passes, wherein the cooling duct is provided with a tray near the cold air intake capable of receiving foreign objects that may enter through the cold air intake.

Description

Technical Field

[0001] The present disclosure relates to a cold storage. Background Art

[0002] Patent Document 1 discloses a technology for a cold storage provided, on one side, with a cold air outlet that blows cold air toward the other side, and having a cold air inlet on the other side. In Patent Document 1, a slit is provided in an inlet kit provided at the cold air inlet and in a partition plate between a product display room and a cooling duct. Prior Art Literature Patent Literature

[0003] [Patent Document 1] Japanese Unexamined Patent Publication No. 2001-324251 Summary of the Invention Problem to be Solved by the Invention

[0004] The present disclosure provides a cold storage that allows easy cleaning work. Means for Solving the Problem

[0005] The cold storage according to the present disclosure is a cold storage comprising: a heat insulating wall; a display room capable of displaying displayed articles; a cooling duct provided between the heat insulating wall and the display room so as to surround the display room, through which cold air circulates; a cold air outlet provided at one end of the cooling duct and blowing out cold air; and a cold air inlet provided at the other end of the cooling duct, through which the cold air blown out from the cold air outlet passes, wherein the cooling duct is provided with a receiving tray capable of catching foreign matter that may enter from the cold air inlet, downstream of the cold air inlet and in the vicinity of the cold air inlet with reference to the flow of cold air. Effect of the Invention

[0006] The cooling storage unit in this disclosure can prevent foreign matter from entering the cooling duct by having a receiving tray catch any foreign matter that may enter through the cold air intake, and can also simplify cleaning work. [Brief explanation of the drawing]

[0007] [Figure 1] Perspective view of the cooling storage unit in Embodiment 1 [Figure 2] Side cross-sectional view of the cooling storage unit in Embodiment 1 [Figure 3] Enlarged view of the area around the upper end of the front cooling duct in Embodiment 1 [Figure 4] Cross-sectional view of the cooling storage unit in Embodiment 1, viewed from the rear. [Figure 5] Cross-sectional view of the cooling storage unit in Embodiment 1, viewed from the rear. [Figure 6] A diagram showing the fixing of the perforated metal and the air intake cover in Embodiment 1. [Modes for carrying out the invention]

[0008] (Knowledge and other information that formed the basis of this disclosure) At the time the inventors conceived of this disclosure, there was a technology for a cooling storage unit having a cold air outlet on one side that blows cold air outwards and a cold air intake on the other side, in which foreign matter could be prevented from entering by providing a member with a slit formed in the intake. However, the inventors discovered that with the conventional technology, foreign matter that passed through the slit would accumulate at the bottom of the unit, so cleaning required removing the cover down to the bottom of the unit and cleaning it. To solve this problem, the subject of this disclosure was established. Therefore, this disclosure provides a cooling storage unit that simplifies cleaning operations.

[0009] The embodiments will be described in detail below with reference to the drawings. However, some unnecessarily detailed explanations may be omitted. For example, detailed explanations of already well-known matters or redundant explanations of substantially identical configurations may be omitted. The attached drawings and the following description are provided to enable those skilled in the art to fully understand this disclosure and are not intended to limit the subject matter described in the claims.

[0010] The directions shown in each diagram—forward, left, and upward—are based on the orientation of the cooling storage unit when it is installed on the mounting surface and in its normal operating state.

[0011] (Embodiment 1) [1-1. Structure] [1-1-1. Configuration of the Cooling Storage Room] Figure 1 is a perspective view of the cooling storage unit 1 in Embodiment 1. Figure 2 is a side cross-sectional view of the cooling storage unit 1. In Figure 2, arrow S1 indicates the airflow within the cooling duct 21 and the cooling storage unit 1 generated by the operation of the cooling fan 23. Arrow S2 indicates the airflow in the machine room 40 generated by the operation of the blower fan 43.

[0012] The refrigerated storage unit 1 in this embodiment is a flat-type refrigerated storage unit that displays products while freezing them. The cooling storage unit 1 comprises a cooling storage unit body 5 and a hinged door 12. The cooling storage unit 1 is rectangular in plan view, and the cooling storage unit body 5 comprises a box-shaped enclosure 10 with an internal space. An opening 11 that opens upward is formed on the top surface of the cooling storage unit body 5. The cooling storage unit body 5 supports the hinged door 12. Users of the cooling storage unit 1 can freely open and close the opening 11 using the hinged door 12. The housing 10 has an intake port 44 at its lower part through which air flows into the machine room 40, which will be described later. Also, as shown in Figure 2, an exhaust port 45 is formed at the lower front of the housing 10 through which air from the machine room 40 is exhausted.

[0013] The cooling storage unit body 5 is equipped with an insulated chamber 20. The insulated chamber 20 is a box-shaped body surrounded by insulated walls 19 and is located inside the housing 10.

[0014] A machine room 40 is provided below the heat insulation chamber 20. An exhaust duct 47 is provided between the housing 10 and the heat insulation chamber 20, and behind the heat insulation chamber 20. A compressor (not shown), a condenser 42, and a blower fan 43 are arranged in the machine room 40.

[0015] The heat insulation chamber 20 comprises a display room 30, and a cooling duct 21 provided between a heat insulation wall 19 and the display room 30. The cooling duct 21 is provided along the heat insulation wall 19 across the entire side surface and bottom surface of the display room 30. An evaporator 22 and a cooling fan 23 are arranged in the cooling duct 21. The evaporator 22 is connected to the compressor and the condenser 42 in the machine room 40 via a refrigerant pipe (not shown) to form a cooling circuit. Cooled air circulates through the cooling duct 21. The heat insulation wall 19 comprises a front heat insulation wall 19a located on the front side of the cooled storage main body 5, a lower heat insulation wall 19b located at the lower part of the cooled storage main body 5, and a rear heat insulation wall 19c located on the rear side of the cooled storage main body 5.

[0016] The display room 30 according to the present embodiment is substantially L-shaped in a side view. The display room 30 has a deep front display portion 31 provided at a front portion of the display room 30, and a shallow rear display portion 32 provided at a rear portion of the display room 30. An interior of the cooling duct 21 below the rear display portion 32 serves as a space where the cooling fan 23 is arranged. Further, as shown in FIG. 1, the display room 30 is partitioned into four spaces in the left-right direction by partition plates 33.

[0017] A cold air outlet 24 for blowing out cooled air is formed at an upper rear end of the cooling duct 21. A cold air inlet 25 through which air blown out from the cold air outlet 24 passes is formed at an upper front end of the cooling duct 21. An inlet cover 26 is provided at the cold air inlet 25. The inlet cover 26 is a flat metal plate formed with a plurality of elliptical slits arranged in the left-right direction. The inlet cover 26 is an example of "a flat metal plate".

[0018] [1-1-2. Structure of the foreign object receiving section] As shown in Figure 2, the cooling duct 21 includes a front cooling duct 21a extending vertically in front of the front display section 31, a lower cooling duct 21b extending rearward from below the front cooling duct 21a, a blower chamber 21c where a cooling fan 23 is located behind the lower cooling duct 21b, and a rear cooling duct 21d extending vertically behind the blower chamber 21c. An evaporator 22 is located in the rear cooling duct 21d.

[0019] Figure 3 is an enlarged view of the area around the upper end of the front cooling duct 21a. Some parts are omitted from Figure 3. An upper tray 61 is provided at the top of the cooling duct 21, positioned on the rear surface 19ab side of the front insulating wall 19a. The upper tray 61 is an example of a "tray" and "the uppermost tray." Inside the cooling duct 21, below the upper tray 61, there is a lower tray 62 positioned on the front 30a side of the display room 30. The lower tray 62 is an example of a "tray" and "the second tray from the top."

[0020] The upper tray 61 and the lower tray 62 are formed in a shape that can receive foreign matter entering from the cold air intake port 25. In this embodiment, the upper tray 61 and the lower tray 62 are formed in a substantially rectangular shape.

[0021] The upper tray 61 and the lower tray 62 (trays) are detachably mounted from the cooling duct 21. The upper tray 61 and the lower tray 62 are located near the cold air intake 25 of the cooling duct 21. Preferably, the location is within a range where a maintenance worker of the cooling storage unit 1 can reach in through the cold air intake 25 and directly remove the upper tray 61 and the lower tray 62. In this case, maintenance of dust and other debris collected by the upper tray 61 and the lower tray 62 becomes easier.

[0022] Furthermore, it is preferable that the upper tray 61 and the lower tray 62 (trays) be placed near the upper limit position of the products to be displayed in the display room 30. In this embodiment, in a side view, they are positioned below the lower end of the cold air intake 25 and below the upper limit position of the products to be displayed. This allows the upper tray 61 and the lower tray 62 to be positioned in a location that can receive foreign objects that enter from the cold air intake 25 and fall into the front cooling duct 21a, and that can be easily removed by maintenance personnel.

[0023] Note that the upper tray 61 and the lower tray 62 are just examples of "trays," so multiple trays, such as a third tray and a fourth tray, may be provided below the lower tray 62.

[0024] The upper tray 61 and the lower tray 62 are positioned vertically offset from each other in a side view. That is, there is a gap S3 between the lower end of the upper tray 61 and the upper end of the lower tray 62. Furthermore, the upper tray 61 and the lower tray 62 are not completely overlapping in a plan view, but are provided so that they partially overlap. In a plan view, the combined length of the upper tray 61 and the lower tray 62 in the front-to-back direction is the same as the length of the upper part of the front cooling duct 21a, that is, the passage near the cold air intake port 25 of the cooling duct 21, in the front-to-back direction.

[0025] Furthermore, there is a gap S4 between the upper tray 61 and the front of the display room 30. In addition, there is a gap S5 between the lower tray 62 and the front insulating wall 19a. Therefore, the upper tray 61 and the lower tray 62 do not completely obstruct the flow of cold air in the cooling duct 21.

[0026] Figure 4 is a cross-sectional view of the cooling storage unit 1 from the rear. Figure 5 is a cross-sectional view of the cooling storage unit 1 from the rear, showing the state with the perforated metal 28 removed. As described above, the display room 30 is divided into four spaces by three partition plates 33. The display room 30 comprises the first display room 30S1, which is the space at the far right end of the display room 30 (the far left end when viewed from the front); the second display room 30S2, which is the space adjacent to the left of the first display room 30S1; the third display room 30S3, which is the space adjacent to the left of the second display room 30S2; and the fourth display room 30S4, which is adjacent to the left of the third display room 30S3 and is the space at the far left end.

[0027] In this embodiment, each of the display compartments 30S1, 30S2, 30S3, and 30S4 is provided with one upper tray 61 and one lower tray 62 in the front cooling duct 21. Therefore, the entire cooling storage unit 1 is provided with four upper trays 61 and four lower trays 62.

[0028] Furthermore, within the cooling duct 21, the length of the upper tray 61 positioned in front of the first display chamber 30S1 in the left-right direction is approximately the same as the length of the first display chamber 30S1 in the left-right direction. Similarly, the length of the lower tray 62 positioned in front of the first display chamber 30S1 in the left-right direction is approximately the same as the length of the first display chamber 30S1 in the left-right direction.

[0029] The relationship between the second display room 30S2, the third display room 30S3, and the fourth display room 30S4 and the upper tray 61 and lower tray 62 positioned in front of them is the same as the relationship between the first display room 30S1 and the upper tray 61 and lower tray 62 positioned in front of the first display room 30S1.

[0030] In this embodiment, the four upper trays 61 are positioned at the same height, and their heights from the mounting surface are all equal. Similarly, the four lower trays 62 are positioned at the same height, and their heights from the mounting surface are all equal. Furthermore, the placement of the upper trays 61 is not limited to the same height position; as long as a gap can be created between them and the lower trays 62 which overlap in a plan view, the upper trays 61 may be at different height positions. Furthermore, the placement of the lower tray 62 is not limited to the same height position; as long as a gap can be created between it and the upper tray 61 which overlap in a plan view, the height positions of the lower tray 62 may be different.

[0031] The "receiving trays," such as the upper receiving tray 61 and the lower receiving tray 62, do not have to extend in a single line in the width direction. When viewed from above, if all the receiving trays are superimposed, they may be arranged so that the receiving trays extend in the width direction by all of them. In other words, the upper receiving tray 61 and the lower receiving tray 62 can be arranged in any way as long as they are provided across the entire width direction within the cooling duct 21 when viewed from above. Furthermore, the upper tray 61 and the lower tray 62 do not necessarily need to be provided across the entire width of the cooling duct 21 in a plan view. For example, in a rear view, the upper tray 61 and the lower tray 62 do not need to be provided in the area that overlaps with the partition plate 33.

[0032] Figure 6 shows how the perforated metal 28 and the intake cover 26 are fixed together. The intake port cover 26 comprises, in a side view, a cover body portion 26a extending in the vertical direction, a cover inclined portion 26b extending rearward and downward from the lower end of the cover body portion 26a, and a cover base portion 26c extending downward from the cover inclined portion 26b. As shown in Figures 5 and 6, vertically elongated slits 26a1 and 26b1 are formed in the cover body portion 26a and the cover inclined portion 26b. Multiple slits 26a1 and 26b1 are formed in a horizontal direction. The cover base 26c of the air intake cover 26 is fixed to the front surface 30a of the display room 30 by fastening members (not shown).

[0033] As shown in Figure 3, the length of the front cooling duct 21a in the front-to-back direction (depth direction) at the upper end of the cooling duct 21 is shorter than that of other parts. Specifically, a sloped air intake cover 26 is provided at the upper end of the display room 30, and the upper end of the display room 30 is shaped to extend forward of the cooling storage unit 1. Therefore, as shown in Figure 3, in the front-to-back direction of the cooling storage unit 1, the length L1 between the rear surface 19ab of the front insulating wall 19a that forms the front of the insulating room 20 and the cover body 26a is longer than the length L2 from the rear surface 19ab of the front insulating wall 19a to the cover base 26c. By forming it in this way, the cold air intake 25 is located away from the display room 30, making it difficult for foreign objects to enter the cooling duct 21, and at the same time, preventing the air intake cover 26 from getting in the way when taking products displayed in the display room 30.

[0034] As shown in Figure 6, perforated metal 28 is placed on the outside of the air intake cover 26 (on the side facing the display room 30). Perforated metal 28 is an example of "a plate formed by punching holes so that smaller circular holes than the slits are arranged at predetermined intervals." The perforated metal 28 and the intake cover 26 are supported to block the opening of the cooling duct 27. The perforated metal 28 is a flat plate formed by bending along the intake cover 26 when viewed from the side. The perforated metal 28 is formed by punching holes so that multiple round holes are arranged at predetermined intervals. The number, shape, and arrangement of the holes in the perforated metal 28 are not particularly limited.

[0035] In detail, the perforated metal 28 comprises, in a side view, a perforated metal main body portion 28a extending in the vertical direction, a perforated metal inclined portion 28b extending from the lower end of the perforated metal main body portion 28a toward the rear and downward of the cooling storage unit 1, and a perforated metal base portion 28c extending downward from the perforated metal inclined portion 28b.

[0036] One of the holes in the perforated metal 28 is formed to be smaller than the slits 26a1 and 26b1 of the intake port cover 26 shown in Figure 5. This prevents the entry of fine foreign matter that cannot be prevented by the intake port cover 26 alone.

[0037] As shown in Figure 6, the perforated metal 28 is fixed by an upper support member 29 formed at the upper end of the front cooling duct 21a and a lower support member 34 formed at the upper end of the cover base 26c of the intake port cover 26.

[0038] The upper support member 29 is composed of an upper surface portion 29a that extends in the front-rear direction of the cooling storage compartment 1 when viewed from the side, and an upper support portion 29b that extends downward in a substantially vertical direction at the rear end of the upper surface portion 29a. A gap S6 is formed between the upper support portion 29b and the air intake cover 26.

[0039] The lower support member 34 is composed of a lower support portion 34a that is substantially L-shaped in side view, and a lower fixing portion 34b that extends substantially vertically downward from the front end of the lower support portion 34a. The lower fixing portion 34b is fixed to the cover base 26c, and a gap S7 is created between the lower support portion 34a and the cover base 26c.

[0040] The perforated metal 28 is fixed to the upper support member 29 and the lower support member 34 by inserting the upper end of the perforated metal body portion 28a into the gap S6 and the lower end of the perforated metal base portion 28c into the gap S7.

[0041] When the perforated metal 28 is supported, the length L3 between the upper surface portion 29a and the upper end portion 28a1 of the perforated metal body portion 28a is greater than or equal to the vertical length of the perforated metal base portion 28c. As a result, when removing the perforated metal 28, the lower end of the perforated metal 28 can be removed from the lower support member 34 by lifting the perforated metal 28, and then the perforated metal 28 can be removed by sliding the lower part forward to release it from the upper support member 29.

[0042] As shown in Figure 5, in this embodiment, when viewed from the rear, the air intake cover 26 is divided and provided above the first display compartment 30S1 and the second display compartment 30S2, and above the third display compartment 30S3 and the fourth display compartment 30S4. Alternatively, it may be a single air intake cover 26 that covers the entire cold air intake 25, or it may be divided into four parts so as to cover the cold air intake 25 above each of the display compartments 30S1, 30S2, 30S3, and 30S4. Thus, the air intake cover 26 may be a single unit, or it may be divided based on any position of the partition plate 33 and provided as a group.

[0043] Furthermore, as shown in Figure 4, the perforated metal 28 is divided into four sections and provided in a rear view so as to cover the cold air intake 25 above the first display room 30S1, the cold air intake 25 above the second display room 30S2, the cold air intake 25 above the third display room 30S3, and the cold air intake 25 above the fourth display room 30S4. The perforated metal 28 may be a single intake cover 26 that covers the entire cold air intake 25, or it may be divided into two parts to cover the upper parts of the first display room 30S1 and the second display room 30S2, and the upper parts of the third display room 30S3 and the fourth display room 30S4. Thus, the perforated metal 28 may be a single unit, or it may be divided into multiple units based on the position of any of the partition plates 33.

[0044] [1-2. Action, action] When the cooling storage unit 1 is activated, refrigerant is discharged from the compressor, condensed in the condenser 42, and then supplied to the evaporator 22. The refrigerant evaporated in the evaporator 22 is returned to the compressor. At this time, heat exchange occurs between the refrigerant and the surrounding air in the evaporator 22 and the condenser 42, cooling the air around the evaporator 22 and heating the air around the condenser 42. The cooled air around the evaporator 22 is blown out by the cooling fan 23 in the cooling duct 21. That is, as shown by arrow S1 in Figure 2, above the display room 30, cold air is blown forward from the cold air outlet 24 at the upper end of the rear cooling duct 21d, passes through the cold air intake 25 at the upper end of the front cooling duct 21a, and returns into the front cooling duct 21a, thereby circulating cold air around the display room 30 and cooling the inside of the display room 30.

[0045] In such a cooling storage unit 1, dust can enter the cooling duct 21 by being carried by the airflow through the holes in the perforated metal 28 and the slits 26a1 in the air intake cover 26, or scraps of food from the display room 30 may enter the cooling duct 21. In this embodiment, if such foreign matter enters the cooling duct 21, the upper tray 61 and the lower tray 62 can catch the foreign matter.

[0046] Furthermore, when cleaning the upper tray 61 and lower tray 62, the perforated metal 28 and the intake cover 26 can be removed, allowing the maintenance worker to remove the upper tray 61 and lower tray 62 for cleaning. Therefore, during cleaning, it is not necessary to clean the bottom of the cooling duct 21, and only the upper tray 61 and lower tray 62 need to be removed and cleaned, making cleaning easy.

[0047] Furthermore, since only the perforated metal 28 can be removed for cleaning, the air intake cover 26 can be left attached while cleaning the perforated metal 28, making it difficult for foreign objects to enter during cleaning.

[0048] [1-3. Effects, etc.] As described above, according to this embodiment, the cooling storage unit 1 comprises an insulating wall 19, a display room 30 on which display items can be displayed, a cooling duct 21 provided between the insulating wall 19 and the display room 30 so as to surround the display room 30 and through which cold air circulates, a cold air outlet 24 provided at one end of the cooling duct 21 for blowing out cold air, and a cold air intake 25 provided at the other end of the cooling duct 21 through which the cold air blown out from the cold air outlet 24 passes, wherein the cooling duct 21 is provided with an upper tray 61 and a lower tray 62 near the cold air intake 25 that can receive foreign objects that may enter from the cold air intake 25. According to this, the upper tray 61 and the lower tray 62 receive foreign objects that may enter from the cold air intake port 25, thereby preventing foreign objects from entering the cooling duct 21 and simplifying the cleaning process.

[0049] The upper tray 61 and the lower tray 62 are in contact with the side wall of the insulating wall 19. According to this, the cold air drawn in from the cold air intake 25 tends to flow along the side of the insulated wall 19, making it easier to efficiently catch any foreign matter that may enter through the cold air intake 25.

[0050] The upper tray 61 and the lower tray 62 are positioned offset from each other in the height direction, and the uppermost tray 61 is in contact with the side wall on the side of the insulating wall 19. According to this, the cold air drawn in from the cold air intake 25 tends to flow along the side of the insulated wall 19, making it easier to efficiently catch any foreign matter that may enter through the cold air intake 25.

[0051] The lower tray 62 of the second shelf from the top is in contact with the side wall of the display room 30. According to this, both the uppermost tray 61 and the lower tray 62, which is the second from the top, can efficiently catch foreign objects that may enter through the cold air intake 25.

[0052] Multiple trays are provided, staggered in the height direction. These trays are arranged alternately, with some trays touching the side wall on the side of the insulating wall 19 and others touching the side wall on the side of the display room 30. According to this, by arranging the trays alternately, it becomes easier to efficiently catch foreign objects that may enter through the cold air intake 25.

[0053] The multiple upper trays 61 and lower trays 62 are characterized in that, when viewed from above, they are arranged continuously in the width direction. According to this, by covering the entire width direction with multiple upper trays 61 and lower trays 62, it becomes possible to efficiently receive foreign objects that may enter from the cold air intake 25.

[0054] The cold air intake port 25 is provided with an intake port cover 26 formed with multiple oval-shaped slits 26a1 and 26b1 arranged in a left-right direction, and a perforated metal 28 formed by drilling holes smaller than the slits 26a1 and 26b1 arranged at predetermined intervals. According to this, the entry of foreign matter into the cooling duct 21 can be suppressed, and cleaning work can be simplified.

[0055] (Other embodiments) As described above, Embodiment 1 has been presented as an example disclosed in this application. However, the technology in this disclosure is not limited to this and can be applied to embodiments that have been modified, replaced, added, or omitted. Furthermore, it is possible to create new embodiments by combining the components described in Embodiment 1. Therefore, other embodiments are illustrated below.

[0056] In the embodiment described above, four upper trays 61 and lower trays 62 were arranged corresponding to the display compartments 30 divided by the partition plates 33. However, the upper trays 61 and lower trays 62 may also be configured by providing one upper tray that extends across the left-right direction of the display compartments 30 of the cooling storage unit 1, and one lower tray that extends across the left-right direction of the display compartments 30 of the cooling storage unit 1.

[0057] Furthermore, the above-described embodiment described a configuration with two trays: an upper tray 61 and a lower tray 62. However, a configuration with three or more trays is also possible by providing additional trays in addition to the upper tray 61 and the lower tray 62. For example, when three trays are provided, the uppermost tray is placed on the insulated wall side in a side view, the tray below the uppermost tray is placed on the display room side, and the tray below that is also placed on the insulated room side. In this way, each tray is arranged alternately on the insulated wall side and the display room side, with the uppermost tray facing the insulated wall side.

[0058] Since the embodiments described above are for illustrative purposes of the technology described herein, various modifications, substitutions, additions, omissions, etc., can be made within the claims or their equivalents.

[0059] (Note) Based on the above description of embodiments, the following technologies are disclosed.

[0060] (Technical 1) A cooling storage facility comprising an insulating wall, a display room on which display items can be displayed, a cooling duct provided between the insulating wall and the display room so as to surround the display room and through which cold air circulates, a cold air outlet provided at one end of the cooling duct for blowing out cold air, and a cold air intake provided at the other end of the cooling duct through which the cold air blown out from the cold air outlet passes, wherein the cooling duct is provided with a tray near the cold air intake capable of receiving foreign matter that may enter through the cold air intake. According to this, the receiving tray catches any foreign objects that may enter through the cold air intake, thereby preventing foreign objects from entering the cooling duct and simplifying the cleaning process.

[0061] (Technical 2) The cooling storage facility according to Technical 1, characterized in that the receiving tray is in contact with the side wall on the side of the insulating wall. According to this, the cold air drawn in through the cold air intake tends to flow along the insulated wall, making it easier to efficiently catch any foreign matter that may enter through the cold air intake.

[0062] (Technical 3) The cooling storage facility according to Technical 1, characterized in that multiple trays are provided with their positions offset in the height direction, and the uppermost tray is in contact with the side wall on the side of the insulating wall. According to this, the cold air drawn in through the cold air intake tends to flow along the insulated wall, making it easier to efficiently catch any foreign matter that may enter through the cold air intake.

[0063] (Technical 4) The cooling storage unit according to Technical 3, characterized in that the second tray from the top is in contact with the side wall of the display room. According to this design, both the top tray and the second-to-last tray from the top can efficiently catch any foreign objects that may enter through the cold air intake.

[0064] (Technical 5) The cooling storage facility according to Technical 1, characterized in that a plurality of trays are provided with their positions offset in the height direction, and the plurality of trays are arranged alternately, with trays in contact with the side wall on the insulating wall side and trays in contact with the side wall on the display room side. According to this method, by arranging the trays alternately, it becomes easier to efficiently catch foreign objects that may enter through the cold air intake.

[0065] (Technical 6) The cooling storage facility according to any one of Technical 3 to Technical 5, characterized in that the plurality of receiving trays are arranged continuously in the width direction when viewed in plan. According to this, by using multiple trays to cover the entire width, it becomes easier to efficiently catch foreign objects that may enter through the cold air intake.

[0066] (Technical 7) The cooling storage facility according to Technical 1 to 6, characterized in that the cold air intake is provided by a metal flat plate formed with multiple oval slits arranged in a left-right direction, and a plate formed by drilling holes so that smaller circular holes are arranged at predetermined intervals. According to this, the entry of foreign objects into the cooling duct can be suppressed, and cleaning work can be simplified. [Industrial applicability]

[0067] As described above, the cooling storage unit according to the present invention can be used to simplify the cleaning of cooling ducts. [Explanation of Symbols]

[0068] 1 Cooling storage 5. Cooling storage unit 10 cabinets 11 Aperture 12. Folding door 19 Insulated Wall 19a Front insulated wall 19ab rear 20 Insulated Room 21 Cooling duct 21a Front cooling duct 21b Lower cooling duct 21c ventilation room 21d Rear cooling duct 22 Evaporator 23 Cooling fan 24 Cold air outlet 25 Cold air intake 26. Air intake cover (metal plate) 26a Cover body 26a1 Slit 26b Cover inclined section 26b1 Slit 26c Cover base 27 Cooling duct 28. Perforated metal (a plate formed by a perforation process in which smaller circular holes than the aforementioned slits are arranged at predetermined intervals) 28a Perforated metal main body 28a1 Upper end 28b Perforated metal inclined section 28c Perforated metal base 29 Upper support member 29a Top part 29b Upper support part 30 Exhibition room 30S1 1st exhibition room 30S2 2nd exhibition room 30S3 3rd exhibition room 30S4 4th display room 30a front 33 Partition Plates 34 Lower support member 34a Lower support part 34b Lower fixing part 40 Machine room 42 Condenser 43. Blower fan 44 Inlet 45 Exhaust vent 47 Exhaust duct 61 Upper tray (tray, the uppermost tray) 62 Lower tray (tray, the second tray from the top)

Claims

1. A cooling storage facility comprising: an insulated wall; a display room in which display items can be displayed; a cooling duct provided between the insulated wall and the display room so as to surround the display room and through which cold air circulates; a cold air outlet provided at one end of the cooling duct for blowing out cold air; and a cold air intake provided at the other end of the cooling duct for the cold air blown out from the cold air outlet to pass through. A cooling storage facility characterized in that the cooling duct is provided with a tray near the cold air intake that can receive foreign matter that may enter from the cold air intake.

2. The cooling storage cabinet according to claim 1, characterized in that the receiving tray is in contact with the side wall on the side of the insulating wall.

3. Multiple receiving trays are provided, with their positions offset in the height direction. The cooling storage cabinet according to claim 1, characterized in that the uppermost tray is in contact with the side wall on the side of the insulating wall.

4. The cooling storage unit according to claim 3, characterized in that the second tray from the top is in contact with the side wall of the display room.

5. Multiple receiving trays are provided, with their positions offset in the height direction. The cooling storage facility according to claim 1, characterized in that the plurality of trays are arranged alternately, with trays in contact with the side wall on the insulating wall side and trays in contact with the side wall on the display room side.

6. The cooling storage cabinet according to any one of claims 3 to 5, characterized in that the plurality of receiving trays are arranged continuously in the width direction when viewed in plan.

7. The cooling storage unit according to claim 1, characterized in that the cold air intake is provided with a metal flat plate having multiple oval-shaped slits arranged in a left-right direction, and a plate having smaller circular holes arranged at predetermined intervals by a perforation process.

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