Round Open Display Case

Abstract

To prevent the generation of dew condensation while excellently cooling a storage chamber.SOLUTION: A round type open showcase comprises: a case body 10 having openings 11 on a front face and left and right both side faces and a storage chamber 12 in the inside; a ventilation pass constitution part 13 extending to the storage chamber 12 along a vertical direction and having an inner ventilation pass 13a communicated with an air outlet (17a or the like) and an air inlet (15a or the like); commodity mounting shelves 20 disposed on a plurality of stages on the front face and left and right both side faces of the ventilation pass constitution part 13; a blower fan (18L or the like) for circulating air between the storage chamber 12 and the ventilation pass 13a; an evaporator 19 installed in the ventilation pass 13a; and an acryl guard 30 installed in the case body 10 in a form of closing a part of the openings 11 to be left and right both side areas of the plurality of commodity mounting shelves 20 disposed in the front face of the ventilation pass constitution part 13. The acryl guard 30 includes a plurality of passing holes (32) formed in a prescribed site in the vicinity of the air inlet, and passing partial air blown from the air outlet through the outside.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a round-type open showcase. [Background technology]

[0002] Conventionally, a round open showcase is provided with a case body having openings formed on the front and both left and right sides in a manner that they are continuous with each other. In this case body, a storage chamber is defined in a manner that faces the opening, and a ventilation passage component is provided in the center of the storage chamber, extending in the vertical direction. Inside the ventilation passage component, a ventilation passage is formed that communicates with an air outlet formed in the upper edge of the opening and an intake port formed in the lower edge of the opening. On the front and both left and right sides of this ventilation passage component, a plurality of product placement shelves are provided in the vertical direction with the same height level. These product placement shelves are used to place products to be stored on the upper surfaces of the shelf boards. An evaporator is also provided on the path from the air sucked in through the intake port to the ventilation passage.

[0003] In such a round open showcase, air from the storage room is sucked in through the intake port by driving a blower fan installed inside the case body, cooled in the evaporator, and then blown out from the exhaust port after passing through a ventilation passage. The air blown out from the exhaust port is sucked into the intake port and circulated, so that the products placed on each product placement shelf are adjusted to and maintained at a desired temperature (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2005-241136 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, although not explicitly stated in the above-mentioned Patent Document 1, it is known that, due to the structure of a round-type open showcase, the corners of the storage room, i.e., the left and right side areas of the multiple product storage shelves provided in front of the ventilation passage component, are difficult to cool sufficiently compared to other areas.

[0006] In view of this, a round open showcase has been proposed in which a flat guard member is installed on the case body in such a manner as to close a part of the opening of the case body that corresponds to both the left and right side areas of the multiple product placement shelves in front of the ventilation passage configuration part. The guard member prevents outside air from entering and promotes cooling of the both left and right side areas.

[0007] However, in a round open showcase equipped with such a guard member, condensation occurs at a specific portion of the guard member near the air inlet, resulting in a poor appearance.

[0008] Regarding the occurrence of this condensation, it is believed that when the blower fan is operated, some of the outside air is sucked into the suction port, and as this part of the outside air is sucked into the suction port it is cooled as it passes over the surface of the guard member near the suction port, causing condensation.

[0009] SUMMARY OF THE PRESENT EMBODIMENT In view of the above-mentioned circumstances, an object of the present invention is to provide a round-type open showcase that can effectively cool a storage compartment while preventing the occurrence of condensation. [Means for solving the problem]

[0010] In order to achieve the above object, the round type open showcase according to the present invention comprises a case body having openings formed on a front surface and on both left and right sides in a manner that they are continuous with each other, and a storage chamber defined therein facing the openings; an air passage forming section extending in a vertical direction in the center of the storage chamber, and an air passage formed therein communicating with an air outlet formed on an upper edge of the opening and an intake port formed on a lower edge of the opening; a product placement shelf provided in a plurality of stages in a vertical direction with the same height level on the front surface and on both left and right sides of the air passage forming section, on which products to be stored are placed; and a product placement shelf for placing products to be stored, the product placement shelf including: an air intake port for intakeing the air from the storage chamber through the intake port, and passing the air through the air passage before being placed in a storage chamber; This round open showcase comprises a blower fan that circulates air by blowing it out from the air outlet into the storage chamber, an evaporator that is installed in the ventilation duct and cools the air by heat exchange between a refrigerant supplied to it and the air passing around it, and a flat guard member that is installed on the case body in a manner that blocks a portion of the opening on both the left and right sides of a plurality of product mounting shelves provided on the front of the ventilation duct component, and maintains products placed on the product mounting shelves at a desired temperature, wherein the guard member is formed at a predetermined position near the suction port and has a plurality of passage holes that allow a portion of the air blown out from the air outlet to pass to the outside.

[0011] Furthermore, the present invention is characterized in that, in the round type open showcase, the plurality of passage holes are formed in a rear portion of the guard member near the suction port.

[0012] Furthermore, the present invention is characterized in that, in the round open showcase, the plurality of passage holes are formed in a dispersed manner over the entire area of ​​the rear portion.

[0013] Furthermore, according to the present invention, in the round type open showcase, the guard member is made of a light-transmitting material. Effect of the Invention

[0014] According to the present invention, a flat guard member is installed on the case body in a manner that blocks a portion of the opening on both the left and right sides of a plurality of product loading shelves provided on the front surface of the ventilation passage component, thereby making it possible to cool both the left and right sides, and furthermore, a plurality of passage holes formed in a specific portion of the guard member near the intake port allow a portion of the air blown out from the exhaust port to pass to the outside, thereby cooling the surface of the specific portion, thereby achieving the effect of preventing the occurrence of condensation while effectively cooling the storage chamber. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a perspective view showing a round open showcase according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view showing a round open showcase according to the embodiment of the present invention. [Diagram 3] FIG. 3 is a cross-sectional side view showing a schematic view of the round open showcase according to the embodiment of the present invention as viewed from the left. [Figure 4] FIG. 4 is a cross-sectional side view showing a schematic view of the round open showcase according to the embodiment of the present invention as viewed from the right. [Diagram 5] FIG. 5 is a cross-sectional view showing the round open showcase according to the embodiment of the present invention as viewed from the front. [Figure 6] FIG. 6 is an enlarged left side view showing the main part of the round open showcase shown in FIGS. 1 to 5, and partially shows the internal structure. [Figure 7] FIG. 7 is an enlarged left side view showing a main part of the acrylic guard shown in FIG. [Figure 8] FIG. 8 is an enlarged right side view showing the main part of the round open showcase shown in FIGS. 1 to 5, and partially shows the internal structure. [Figure 9] FIG. 9 is an enlarged cross-sectional view showing a main part of the acrylic guard shown in FIG. [Figure 10]FIG. 10 is an enlarged cross-sectional view showing a main part of a modified example of the acrylic guard shown in FIG. [Figure 11] FIG. 11 is an enlarged cross-sectional view showing a main part of a modified example of the acrylic guard shown in FIG. [Figure 12] FIG. 12 is an enlarged cross-sectional view showing a main part of a modified example of the acrylic guard shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a round-type open showcase according to the present invention will be described in detail below with reference to the accompanying drawings.

[0017] Fig. 1 to Fig. 5 each show a round type open showcase according to an embodiment of the present invention, with Fig. 1 and Fig. 2 being perspective views, Fig. 3 being a cross-sectional side view showing the round type open showcase as viewed from the left, Fig. 4 being a cross-sectional side view showing the round type open showcase as viewed from the right, and Fig. 5 being a cross-sectional view showing the round type open showcase as viewed from the front. The round type open showcase 1 exemplified here includes a case body 10.

[0018] The case body 10 is a heat-insulated housing having openings 11 formed in a manner continuous with each other on the front surface and both left and right side surfaces. For convenience of explanation, the opening 11 formed on the front surface of the case body 10 will also be referred to as a front opening 11a, the opening 11 formed on the left side surface of the case body 10 will also be referred to as a left side opening 11b, and the opening 11 formed on the right side surface of the case body 10 will also be referred to as a right side opening 11c. Inside the case body 10, a storage chamber 12 is defined in a manner facing the openings 11 (the front opening 11a, the left side opening 11b, and the right side opening 11c).

[0019] A columnar ventilation passage component 13 extending along the vertical direction is provided in the central region of the storage chamber 12. This ventilation passage component 13 has a ventilation passage 13a formed therein that extends along the vertical direction.

[0020] The ventilation passage 13a communicates with a front intake port 15a through a front lower duct 14a located outside the storage chamber 12 and below the storage chamber 12, and also communicates with a front exhaust port 17a through a front upper duct 16a located outside the storage chamber 12 and above the storage chamber 12. Here, the front intake port 15a is an opening formed at the lower edge of the front opening 11a. The front exhaust port 17a is an opening formed at the upper edge of the front opening 11a.

[0021] Further, ventilation passage 13a communicates with left suction port 15b through left lower duct 14b located outside storage chamber 12 and below storage chamber 12, and communicates with left outlet 17b through left upper duct 16b located outside storage chamber 12 and above storage chamber 12. Here, left suction port 15b is an opening formed in the lower edge of left side opening 11b. Left outlet 17b is an opening formed in the upper edge of left side opening 11b.

[0022] Furthermore, the ventilation passage 13a communicates with a right suction port 15c through a right lower duct 14c located outside the storage room 12 and on the lower side of the storage room 12, and communicates with a right outlet 17c through a right upper duct 16c located outside the storage room 12 and on the upper side of the storage room 12. Here, the right suction port 15c is an opening formed in the lower edge of the right side opening 11c. The right outlet 17c is an opening formed in the upper edge of the right side opening 11c.

[0023] A left blower fan 18L is disposed in the left lower duct 14b. The left blower fans 18L are provided in a number of, for example, four, and are driven by a drive command given from a control unit (not shown) to circulate air.

[0024] Further, a right blower fan 18R is disposed in the right lower duct 14c. The right blower fans 18R are provided in a number of, for example, four, and are driven by a drive command given from the control unit to circulate air.

[0025] Meanwhile, a plurality of evaporators 19 are installed in the lower part of the ventilation passage 13a. Although not shown in the figure, these evaporators 19 are sequentially connected to a compressor, a condenser, and an electronic expansion valve through refrigerant pipes to form a refrigerant circuit that circulates the refrigerant.

[0026] The compressor is driven by a drive command given from the control unit, and when driven, compresses the refrigerant. The condenser condenses the refrigerant by exchanging heat between the refrigerant compressed by the compressor and the surrounding air. The electronic expansion valve has its opening adjusted according to an opening command given from the control unit, and adiabatically expands the refrigerant passing through it and circulates it to the evaporator 19. The evaporator 19 exchanges heat between the refrigerant adiabatically expanded by the electronic expansion valve and the air passing around it, thereby cooling the air.

[0027] A plurality of product placement shelves 20 are provided lined up in the vertical direction on the front surface and both the left and right sides of the ventilation passage component 13. Each of these product placement shelves 20 is for placing products thereon.

[0028] A front fence member 21a is provided in an upwardly protruding manner over the entire front edge portion (the lower edge portion of the front opening 11a) of the front suction port 15a. The front fence member 21a is made of a light-transmitting material such as acrylic resin, and is a long, flat member whose longitudinal direction is in the left-right direction.

[0029] A left fence member 21b is provided in an upwardly protruding manner over the entire left edge portion (the lower edge portion of the left side opening 11b) of the left suction port 15b. The left fence member 21b is made of a light-transmitting material such as acrylic resin, and is a long, flat member whose longitudinal direction is the front-to-rear direction. The front end portion of the left fence member 21b is connected to the left end portion of the front fence member 21a via a connecting member 22.

[0030] A right fence member 21c is provided in an upwardly protruding manner over the entire right edge portion (the lower edge portion of the right side opening 11c) of the right suction port 15c. The right fence member 21c is made of a light-transmitting material such as acrylic resin, and is a long, flat member whose longitudinal direction is the front-rear direction. The front end portion of the right fence member 21c is connected to the right end portion of the front fence member 21a via a connecting member 23.

[0031] A pair of acrylic guards (guard members) 30 are attached to the case body 10 in a left-right pair. The acrylic guards 30 are flat members made of a light-transmitting material such as acrylic resin, and are attached to the front surface of the ventilation passage configuration section 13 in a manner that they partially close a left side opening 11b and a right side opening 11c which are on both the left and right sides of the multiple product placement shelves 20.

[0032] More specifically, the left-side acrylic guard 30 has its lower end portion attached to a part of the left fence member 21b via mounting member 24a, and its upper end portion attached to a part of the left edge of the left air outlet 17b via mounting member 24b.

[0033] Meanwhile, the right-side acrylic guard 30 has its lower end portion attached to a part of the right fence member 21c via a mounting member 25a, and its upper end portion attached to a part of the right edge of the right air outlet 17c via a mounting member 25b.

[0034] In the left acrylic guard 30, a plurality of passage holes 32 are formed in a dispersed manner over the entire area of ​​the rear part 31 of the lower end portion near the left suction port 15b, as shown in Fig. 6. As shown by the two-dot chain line arrow in Fig. 6, the left surface (front surface) of the rear part 31 of the lower end portion of the left acrylic guard 30 serves as a passage area for outside air that is drawn into the left suction port 15b by the drive of the left blower fan 18L.

[0035] The passage holes 32 formed in the rear portion 31 of the left acrylic guard 30 are circular with a diameter R of 4.5 mm or less, as shown in FIG. 7, and the separation distance D between the passage holes 32 is about 20 mm.

[0036] Meanwhile, in the right acrylic guard 30, a plurality of passage holes 32 are formed in a dispersed manner throughout the rear region 31 of the lower end portion near the right suction port 15c, as shown in Fig. 8. As shown by the two-dot chain line arrow in Fig. 8, the right surface (front surface) of the rear region 31 of the lower end portion of the right acrylic guard 30 serves as a passage area for outside air that is drawn into the right suction port 15c by the drive of the right blower fan 18R.

[0037] The through hole 32 formed in the rear portion 31 of the right-side acrylic guard 30 is not shown in the figure, but like the through hole 32 formed in the left-side acrylic guard 30 described above, it is circular and has a diameter of 4.5 mm or less, and the distance between the through holes 32 is approximately 20 mm.

[0038] In the round type open showcase 1 having the above-mentioned configuration, the products in the storage compartment 12 can be cooled and maintained at a desired temperature in the following manner.

[0039] When the left blower fan 18L and the right blower fan 18R are driven by a drive command given from the control unit, the air sucked in through the front intake port 15a passes through the front lower duct 14a, is cooled by the evaporator 19 and passes through the ventilation passage 13a, the air sucked in through the left intake port 15b passes through the left lower duct 14b, is cooled by the evaporator 19 and passes through the ventilation passage 13a, and the air sucked in through the right intake port 15c passes through the right lower duct 14c, is cooled by the evaporator 19 and passes through the ventilation passage 13a.

[0040] In this way, the air that passes through the ventilation passage 13a and passes through the front upper duct 16a is blown out from the front outlet 17a and then sucked back into the front inlet 15a, forming an air curtain, thereby cooling the products in the front area of ​​the storage chamber 12 while suppressing the intrusion of heat from the front opening 11a.

[0041] Of the air that passes through the ventilation passage 13a, the air that passes through the left upper duct 16b is blown out from the left air outlet 17b and is sucked back into the left air inlet 15b, forming an air curtain that cools the merchandise in the left area of ​​the storage room 12 while suppressing the intrusion of heat from the left side opening 11b.

[0042] In addition, the air that passes through the ventilation passage 13a and passes through the right upper duct 16c is blown out from the right outlet 17c and is sucked back into the right inlet 15c, forming an air curtain that cools the products in the right area of ​​the storage room 12 while suppressing the intrusion of heat from the right side opening 11c.

[0043] Incidentally, most of the air blown out from the left air outlet 17b and passing downward along the right surface (back surface) of the left-side acrylic guard 30 is sucked into the left air inlet 15b, thereby cooling the left side area of ​​the multiple product placement shelves 20 in front of the ventilation path component 13.

[0044] In addition, a portion of the air blown out from the left air outlet 17b and passing downward along the right side of the left acrylic guard 30 passes through the passage hole 32 and passes over the surface (left side) of the left acrylic guard 30, as shown in Figure 9, and can cool the surface of the rear portion 31 of the lower end of the left acrylic guard 30.

[0045] Most of the air blown out from the right air outlet 17c and passing downward along the left surface (back surface) of the right-side acrylic guard 30 is sucked into the right air inlet 15c, thereby cooling the right side area of ​​the multiple product placement shelves 20 in front of the ventilation path component 13.

[0046] In addition, although not shown in the figure, a portion of the air that is blown out from the right air outlet 17c and passes downward along the left side of the right-side acrylic guard 30 passes through the passage hole 32 and passes over the right side (surface) of the right-side acrylic guard 30, just like the left-side acrylic guard 30 described above, and can cool the surface of the rear portion 31 of the lower end of the right-side acrylic guard 30.

[0047] As described above, in the round open showcase 1 which is an embodiment of the present invention, a pair of left and right acrylic guards 30 are installed on the case body 10 in a manner that blocks a portion of the openings 11 (left side opening 11b and right side opening 11c) which are on the left and right side areas of the multiple product storage shelves 20 provided on the front side of the ventilation passage component 13, so that both left and right side areas can be cooled, and further, a plurality of through holes 32 formed in a distributed manner over the entire rear area 31 at the lower end of the pair of left and right acrylic guards 30 allow a portion of the air blown out from the left air outlet 17b and the right air outlet 17c to pass to the outside, so that the surface of the rear area 31 can be cooled, thereby preventing the occurrence of condensation while effectively cooling the storage chamber 12.

[0048] Although the preferred embodiment of the present invention has been described above, the present invention is not limited to this and various modifications can be made.

[0049] In the embodiment described above, a plurality of circular passage holes 32 are formed over the entire area of ​​the rear portion 31 at the lower end of the acrylic guard 30, but the present invention can also be modified as follows.

[0050] That is, as shown in Fig. 10, each of the through holes 34 may be formed so as to gradually incline downward toward the surface of the acrylic guard 33 (the left surface in the left acrylic guard 33, and the right surface in the right acrylic guard 33). This makes it easier for air passing downward along the back surface of the acrylic guard 33 (the right surface in the left acrylic guard 33, and the left surface in the right acrylic guard 33) to pass through each of the through holes 34, making it possible to cool the surface of the acrylic guard 33 more effectively and prevent condensation from occurring.

[0051] 11, guide parts 37 may be provided on the back surface side of the lower edge of each passage hole 36, and these guide parts 37 may be formed so that the further below the acrylic guard 35 they are formed, the greater their extending length. In this way, the guide parts 37 act as resistance and guide the air passing downward along the back surface of the acrylic guard 35 to the passage holes 36, making it possible to further cool the surface of the acrylic guard 35 and prevent condensation from occurring.

[0052] 12, the acrylic guard 38 may be formed of multiple plate-like components 38a, with steps provided at the joints of each component, and these steps may form the passage holes 39. This allows the air passing downward along the back surface of the acrylic guard 38 to more easily pass through each passage hole 39, making it possible to cool the surface of the acrylic guard 38 more effectively and preventing condensation from occurring.

[0053] In the above-described embodiment, a plurality of passage holes 32 are formed in the rear portion 31 of the lower end portion of the acrylic guard 30. However, in the present invention, the passage holes 32 are not necessarily limited to the rear portion, so long as they are any predetermined portion near the suction port of the guard member.

[0054] In the above-described embodiment, the acrylic guard 30 is made of a light-transmitting material, but in the present invention, the guard member does not have to be made of a light-transmitting material. [Explanation of symbols]

[0055] 1...round open showcase, 10...case body, 11...opening, 12...storage room, 13...ventilation passage component, 13a...ventilation passage, 15a...front intake port, 15b...left intake port, 15c...right intake port, 17a...front outlet, 17b...left outlet, 17c...right outlet, 18L...left blower fan, 18R...right blower fan, 19...evaporator, 20...product placement shelf, 21a...front fence member, 21b...left fence member, 21c...right fence member, 30...acrylic guard, 31...rear portion, 32...passage hole.

Claims

1. a case body having openings formed in a manner such that the openings are continuous with each other on the front surface and on both the left and right sides, and a storage chamber is defined inside the case body so as to face the openings; a ventilation passage component extending in the vertical direction in the central portion of the storage chamber and having a ventilation passage formed therein communicate with an air outlet formed in an upper edge portion of the opening and an air inlet formed in a lower edge portion of the opening; a product placement shelf provided in a plurality of stages in a vertical direction with the height levels being the same on the front surface and on both the left and right sides of the ventilation passage configuration portion, on which products to be stored are placed; a blower fan that circulates air by sucking in air from the storage chamber through the suction port, passing the air through the ventilation passage, and then blowing the air out of the air outlet into the storage chamber; an evaporator that is installed in the ventilation passage and exchanges heat between a refrigerant supplied thereto and air passing around the evaporator to cool the air; a flat guard member installed on the case body in a manner to completely block both left and right areas of a plurality of product placement shelves provided on the front surface of the ventilation passage configuration portion; Equipped with A round-type open showcase that maintains products placed on the product placement shelf at a desired temperature, a guard member that blocks the entire left side area of ​​a plurality of product placement shelves provided on the front surface of the ventilation passage configuration portion, the guard member being formed at a predetermined position near a left intake port formed on a lower edge portion of the left side opening of the case body, and having a plurality of passage holes that allow a portion of the air blown out from a left outlet port formed on an upper edge portion of the left side opening to pass to the outside; A round open showcase characterized in that a guard member that blocks the entire right side area of ​​a plurality of product placement shelves provided on the front side of the ventilation passage component is formed at a predetermined location near a right intake port formed on the lower edge of the right side opening of the case body, and is provided with a plurality of passage holes that allow a portion of the air blown out from a right outlet port formed on the upper edge of the right side opening to pass to the outside.

2. A plurality of passage holes formed in a guard member that blocks the entire left area of ​​a plurality of product placement shelves provided in front of the ventilation passage configuration part are formed only in a rear portion of the guard member near the left suction port, The round-type open showcase described in claim 1, characterized in that the multiple passage holes formed in the guard member that blocks the entire right side area of ​​the multiple product placement shelves provided on the front side of the ventilation passage component are formed only in the rear portion of the guard member near the right suction port.

3. A plurality of passage holes formed in a guard member that blocks the entire left area of ​​a plurality of product placement shelves provided in front of the ventilation passage configuration part are formed in a manner that is distributed throughout the entire rear area, The round-type open showcase described in claim 2, characterized in that a plurality of passage holes formed in a guard member that blocks the entire right side area of ​​a plurality of product placement shelves provided in front of the ventilation passage component are formed in a distributed manner throughout the entire rear area.

4. 4. The round open showcase according to claim 1, wherein the guard member is made of a light-transmitting material.

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