WO2014178312A1 - オープンショーケース - Google Patents
オープンショーケース Download PDFInfo
- Publication number
- WO2014178312A1 WO2014178312A1 PCT/JP2014/061389 JP2014061389W WO2014178312A1 WO 2014178312 A1 WO2014178312 A1 WO 2014178312A1 JP 2014061389 W JP2014061389 W JP 2014061389W WO 2014178312 A1 WO2014178312 A1 WO 2014178312A1
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- WIPO (PCT)
- Prior art keywords
- outlet
- air
- cold air
- opening
- duct
- Prior art date
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0439—Cases or cabinets of the open type
- A47F3/0443—Cases or cabinets of the open type with forced air circulation
- A47F3/0447—Cases or cabinets of the open type with forced air circulation with air curtains
Definitions
- Embodiments of the present invention relate to an open showcase provided with a display room including a plurality of shelves for placing goods.
- An open showcase having a display room including a plurality of shelves for placing products is known.
- the display room is normally open only at the front. When a person stands in front of the display room, it becomes difficult to see the products in the display room, and it is difficult for other people to take out the products in the display room. It is difficult to see the products in the display room, so the display effect of the products is low. It is difficult to take out the products in the display room, and the sales efficiency of the products is low.
- an open showcase having a display room in which three surfaces of the front side, the left side, and the right side are opened in order to enhance the display effect and sales efficiency of products is known (for example, Japanese Patent Application Laid-Open No. 2005-55069). And JP-A-2005-55121).
- a store in which this kind of open showcase is installed products in the display room can be seen and taken out from three directions corresponding to the three front, left and right sides of the display room. This is convenient for both sellers and buyers.
- an open showcase having a display chamber in which the three surfaces of the front surface, the left side surface, and the right side surface are opened as described above has a considerably long dimension in the front-rear depth direction compared to the dimension in the left-right width direction of the front surface. Since such a large open showcase has a large installation area and a large mass, the installation location is limited, and it takes time to load and carry in the installation location.
- An open showcase includes a main body, a display room disposed in the main body, and a cooling unit that supplies cold air to the display room.
- the relationship between the dimension Fa in the left-right width direction and the dimension Fb in the front-rear depth direction is Fa ⁇ Fb.
- the display chamber has a front opening, a left side opening, and a right side opening, and is exposed outside the main body through the front opening, the left side opening, and the right side opening.
- the cooling unit supplies cool air into the display chamber.
- the figure which looked at the ceiling part of the display room in the embodiment from diagonally downward.
- the figure which looked at the bottom part of the display room in the embodiment from diagonally upward.
- the external appearance perspective view of the adjustment board in the embodiment The figure which shows the relationship between each blowing part and air volume of the cold air outlet in the same embodiment.
- the figure which shows the modification of the steel plate of FIG. The figure which shows the other modification of the steel plate of FIG.
- FIG. 1 is a view of the appearance of the open showcase as viewed from the front
- FIG. 2 is a view of the appearance of the open showcase as viewed from the side.
- the display room of the open showcase is a three-sided open type in which the front, left, and right sides are open.
- the main body 1 of the open showcase has a rectangular shape in front view and in plan view.
- the main body 1 includes a top plate 2 at the top, a machine room 3 at the bottom, and a display chamber 4 for displaying products between the top plate 2 and the machine room 3.
- the back surface 1a of the main body 1 is constituted by a rectangular flat plate.
- the shape of the top plate 2 viewed from the front is a rectangle having a thin thickness in the vertical direction and a dimension of Fa in the horizontal direction.
- a ceiling surface 4 b of the display chamber 4 is formed by the lower surface of the top plate 2.
- the shape of the machine room 3 viewed from the front is a rectangle having a certain thickness in the vertical height direction and a dimension in the horizontal width direction of Fa.
- a bottom surface 4 c of the display chamber 4 is formed by the upper surface of the machine room 3.
- the shape of the display chamber 4 viewed from the front is a rectangle which is long in the vertical height direction and whose dimension in the horizontal width direction is Fa.
- the shape of the top plate 2 viewed from the side surface is a rectangular shape having a small thickness in the vertical height direction and protruding from the back surface 1a to the front surface side and having a predetermined dimension in the front-rear depth direction.
- the shape of the machine room 3 viewed from the side surface is a rectangular shape having a certain thickness in the vertical height direction and a dimension Fb in the front-rear depth direction.
- the dimension Fb in the depth direction of the machine room 3 is slightly longer than the dimension in the depth direction of the top plate 2.
- the back side 4a on the back side of the display room 4 is arranged with a gap of a predetermined dimension between the back side 1a of the main body 1 of the open showcase.
- the upper part of the back surface 4a is substantially parallel to the back surface 1a.
- the part excluding the upper part of the back surface 4a is slightly inclined so as to gradually protrude toward the front side as it goes downward.
- the display room 4 is a three-sided open type in which the three surfaces of the front surface, the left surface, and the right surface except for the back surface 4a, the ceiling surface 4b, and the bottom surface 4c are open, and includes a front surface opening 41, a left surface opening 42, and a right surface. An opening 43 is provided.
- the display chamber 4 is exposed outside the main body 1 through the front opening 41, the left side opening 42, and the right side opening 43.
- the dimensions in the left-right width direction of the main body 1 are the same Fa as the dimensions in the left-right width direction of the top plate 2 and the dimensions in the left-right width direction of the machine room 3.
- the dimension of the main body 1 in the front-rear depth direction is the same Fb as the dimension of the machine room 3 in the front-rear depth direction.
- FIG. 3 is a diagram schematically showing a longitudinal section of the main body 1.
- FIG. 4 is a view of the ceiling surface 4b of the display room 4 as viewed obliquely from below.
- FIG. 5 is a view of the back surface 4a of the display chamber 4 as viewed from the front.
- FIG. 6 is a view of the bottom surface 4c of the display chamber 4 as viewed obliquely from above.
- the hatched portions in FIGS. 4 to 6 indicate the mounting positions of the shelves 5.
- the back surface 4a of the display chamber 4 is inclined so as to gradually protrude toward the front opening 41 from the ceiling surface 4b to the bottom surface 4c.
- a plurality of, for example, four stages of product placement shelves 5 are vertically arranged at predetermined intervals.
- the dimension in the left-right width direction of each shelf 5 is slightly shorter than the dimension in the left-right width direction of the back surface 4a.
- Each shelf 5 protrudes toward the front opening 41 while maintaining a state substantially parallel to the bottom surface 4c.
- merchandise for sale such as a large number of can drinks and bottle drinks are placed and displayed.
- the space existing between the shelves 5 is a space for storing products and a cooling space on each shelf 5.
- a cold air outlet 7 that blows out cooling air (referred to as cold air) is formed at a position corresponding to the cooling space between the shelves 5.
- These cold air outlets 7 are U-shaped openings as shown in FIGS. 1, 4, and 5.
- the cold air outlet 7 is a horizontally long extending in the left-right width direction between the left side blowing part 7ax and the right side blowing part 7ay that are vertically long in the vertical direction and the side blowing parts 7ax, 7ay.
- a center outlet 7b having a shape.
- the left side blowing portion 7ax is formed at the left end edge portion 4x of the back surface 4a.
- the left end edge 4x is adjacent to the left side opening 42.
- the right side blowing portion 7ay is formed at the right end edge portion 4y of the back surface 4a.
- the right end edge 4 y is adjacent to the right side opening 43.
- the center blowing portion 7b is disposed at a position facing the upper portion of the cooling space and is continuous with the upper portions of the side blowing portions 7ax and 7ay.
- the dimensions in the left-right width direction of the openings of the side blowing parts 7ax, 7ay are substantially equal to the dimensions in the vertical direction of the opening of the center blowing part 7b.
- the dimension in the vertical height direction of the opening of the side blowing parts 7ax, 7ay is several times the dimension in the vertical height direction of the opening of the center blowing part 7b.
- each cold air outlet 7 is sent to the product on each shelf 5.
- the dimension from the left end to the right end of each cold air outlet 7 is the same as or slightly larger than the dimension of each shelf 5 in the left-right width direction.
- the width from the left end to the right end of each cold air outlet 7 is slightly larger than the dimension of each shelf 5 in the left-right width direction.
- the side blowing portions 7ax, 7ay and the center blowing portion 7b are formed as one continuous opening, as shown in a partially enlarged view in FIG. 7, the side plate is formed by a steel plate so-called punching metal in which a large number of openings are formed. You may comprise blowing part 7ax, 7ay and the center blowing part 7b.
- the side blowing portions 7ax and 7ay and the center blowing portion 7b include a large number of elongated holes 7g.
- Each blowing hole 7g of the side blowing portions 7ax, 7ay is arranged in a direction in which the longitudinal direction is along the vertical height direction and along the vertical height direction. A plurality of rows (two strips) are formed along the horizontal width direction.
- the blowout holes 7g of the center blowout part 7b are arranged in the direction in which the longitudinal direction is along the left-right width direction and along the left-right width direction. A plurality of rows (four strips) are formed along the vertical height direction. In place of the punching metal, a synthetic resin plate in which a large number of blowing holes 7g are formed may be used.
- each blowout hole 7g of the center blowout part 7b falls on the entire area of the shelf 5 with the spread in the vertical width direction, and cools all the products on the shelf 5.
- the cool air blown out from the blowout holes 7g of the side blowout portions 7ax and 7ay flows toward both ends in the left-right width direction of the shelf 5, and cools the products placed on both ends in the left-right width direction in a concentrated manner.
- the products on each shelf 5 are made uniform and efficient by blowing out such cold air. Can cool well.
- an illumination unit 8 using a fluorescent lamp or a light emitting diode (LED) is disposed on the top plate 2 that constitutes the ceiling surface 4 b of the display chamber 4. .
- the illumination unit 8 has a length along the upper edge 41 a of the front opening 41 of the display chamber 4, and illuminates the display chamber 4 and illuminates the front surface of the top plate 2.
- the name of the product accommodated in the display room 4 is written. The description of this product name emerges due to the illumination of the illumination unit 8.
- An air curtain outlet 10 is formed on the ceiling surface 4 b of the display room 4. As shown in FIG. 4, the air curtain outlet 10 is an opening formed in a U shape.
- the air curtain outlet 10 is a horizontally long extending in the left-right width direction between the left side outlet 10ax and the right side outlet 10ay that are elongated in the longitudinal direction and between the side outlets 10ax, 10ay.
- a center outlet 10b having a shape.
- the left side blowing portion 10ax is formed along the upper edge 42a of the left side opening 42.
- the right side blowing portion 10 ay is formed along the upper edge 43 a of the right side opening 43.
- the center blowing portion 10b is formed along the upper edge 41a of the front opening 41 and is connected to the front side end portions of the side blowing portions 10ax and 10ay.
- the cool air blown from the center blowing portion 10 b flows from the upper side to the lower side along the front opening 41 of the display chamber 4.
- the cool air blown out from the side blowing portions 10 ax and 10 ay flows downward along the left side opening 42 and the right side opening 43 of the display chamber 4.
- the positions of the side blowing parts 10ax, 10ay are outside the positions of the side blowing parts 7ax, 7ay of the cold air outlet 7.
- the position of the center blowing portion 10b is outside the position of the front end portion of each shelf 5. Therefore, the cold air blown from the side blowing portions 10ax, 10ay and the center blowing portion 10b flows downward without hitting the cold air blown from the side blowing portions 7ax, 7ay, and without hitting each shelf 5.
- the flow of cool air blown out from the side blowing portions 10ax and 10ay and the center blowing portion 10b becomes an air curtain along the front opening 41, the left side opening 42, and the right side opening 43 of the display chamber 4. By this air curtain, entry of external air from the outside of the main body 1 to the display chamber 4 is prevented.
- the side blowing portions 10ax, 10ay and the center blowing portion 10b are formed as one continuous opening, a large number of openings are formed in the same manner as the side blowing portions 7ax, 7ay and the center blowing portion 7b of the cold air outlet 7.
- the side blowing portions 10ax and 10ay and the center blowing portion 10b may be formed of a steel plate so-called punching metal. Instead of the punching metal, a synthetic resin plate having a large number of openings may be used.
- a duct 11 communicating with the air curtain outlet 10 is formed inside the top plate 2.
- the duct 11 guides the cool air supplied from the duct 12 on the back side of the back surface 4 a to the air curtain outlet 10.
- a suction port 13 is formed on the bottom surface 4 c of the display chamber 4. As shown in FIG. 6, the suction port 13 is an opening formed in a U shape, and sucks cold air blown from each cold air outlet 7 and cold air for the air curtain blown from the air curtain outlet 10.
- the suction port 13 has a vertically long left side suction part 13ax and a right side suction part 13ay that are long in the front-rear depth direction, and a horizontally long shape that extends in the left-right width direction between the side suction parts 13ax and 13ay.
- Center suction portion 13b The left side suction portion 13ax is formed along the lower edge 42b of the left side opening 42.
- the right side suction portion 13ay is formed along the lower edge 43b of the right side opening 43.
- the center suction portion 13b is formed along the lower edge 41b of the front opening 41 and is connected to the front side end portions of the side suction portions 13ax and 13ay.
- the positions of the side suction portions 13ax, 13ay and the center suction portion 13b of the suction port 13 are outside the peripheral edge portion of each shelf 5.
- the positions of the side suction portions 13ax, 13ay of the suction port 13 are outside in the left-right width direction than the positions of the side blowout portions 7ax, 7ay of each cold air outlet 7. Due to this positional relationship, there is no obstacle on the cool air flow path between the air curtain outlet 10 and the suction port 13, and the air curtain cool air blown from the air curtain outlet 10 is smoothly and efficiently supplied to the suction port 13. Well inhaled. As a result, the air curtain can be formed stably.
- the length of the side suction portions 13ax, 13ay of the suction port 13 in the front-rear depth direction is shorter than the length of the bottom surface 4c in the front-rear depth direction. That is, the positions of the end portions on the non-front side of the side suction portions 13ax and 13ay are separated from the back surface 4a by a predetermined interval. If the positions of the end portions on the non-front side of the side suction portions 13ax and 13ay are close to the back surface 4a, the cool air blown out from the side blow-out portions 7ax and 7ay of the cool air blowout port 7 at the bottom is the bottom shelf.
- a so-called short circuit is generated in which the product on the lowest shelf 5 is sucked into the side suction portions 13ax and 13ay without cooling.
- the positions of the end portions on the non-front side of the side suction portions 13ax, 13ay are separated from the back surface 4a by a predetermined interval.
- the side suction portions 10ax, 10ay and the center suction portion 10b of the air curtain outlet 10 are positioned outside the peripheral edge of each shelf 5, but the side suction portions 13ax, 13ay, and Only a part of each of the center suction portions 13b may be located outside the peripheral edge of each shelf 5.
- the air curtain outlet 10 includes a left side outlet 10cx, a right side outlet 10cy, and a center outlet 10b.
- the positions of the side blowing parts 10cx and 10cy are inside the positions of the side blowing parts 10ax and 10ay in the left-right width direction. Further, the width from the left end of the left side blowing portion 10cx to the right end of the right side blowing portion 10cy is substantially the same as the width from the left end of the left side blowing portion 7ax of the cold air outlet 7 to the right end of the right side blowing portion 7ay. .
- the preferred relationship between the dimension of the shelf 5 in the left-right width direction, the dimension of the cool air outlet 7 in the left-right width direction, and the dimension of the air curtain outlet 10 in the left-right width direction is “the dimension of the shelf 5 in the left-right width direction”.
- ⁇ “Dimension in the left-right width direction of the cold air outlet 7” ⁇ “Dimension in the left-right width direction of the air curtain outlet 10” and “Dimension in the left-right width direction of the shelf 5” ⁇ “Left-right width direction of the air curtain outlet 10” Dimensions ”.
- the cold air blown out from the air curtain outlet 10 has a low temperature and a high wind speed immediately after being blown out.
- the cool air blown out from the side blowing portions 10cx and 10cy hits the uppermost (first stage) shelf 5, and the uppermost cool air outlet.
- the cold air blown out from the seven side blowout portions 7ax, 7ay is supplied to the uppermost shelf 5.
- the product placed on the uppermost shelf 5 may be too cold.
- the side blowing portions 7ax and 7ay of the cold air outlet 7 facing the cooling space between the uppermost shelf 5 and the second shelf 5 from the top may be closed or removed.
- the cold air for the air curtain blown from the air curtain outlet 10 increases in temperature as the air goes down, and the wind speed also decreases. In this state, the action of the air curtain on the lower part of the display chamber 4 may be weakened. However, the cold air blown out from the side blowing portions 7ax, 7ay of each cold air outlet 7 flows down from both ends in the left-right width direction of each shelf 5 while falling downward with its own weight. The cold air that flows down merges with the cold air for the air curtain blown from the side blowing portions 10ax, 10ay (or the side blowing portions 10cx, 10cy) of the air curtain blower outlet 10. By this merging, the action of the air curtain on the lower part of the display chamber 4 can be maintained sufficiently and stably.
- a partition plate 19 formed of a heat insulating material such as polystyrene foam is disposed in a space between the back surface 4 a of the display chamber 4 and the back surface 1 a of the main body 1.
- the partition plate 19 divides the space between the back surface 4a and the back surface 1a into a cool air circulation duct 12 and an exhaust duct 20. These ducts 12 and 20 extend along the vertical height direction of the main body 1.
- the upper part of the duct 12 communicates with the air curtain outlet 10 through the duct 11 in the top plate 2.
- the lower part of the duct 12 communicates with a duct 14a described later.
- Each cold air outlet 7 communicates with a midway portion of the duct 12.
- the upper portion of the duct 20 communicates with an opening portion 21 formed between the top plate 2 and the back surface 1a.
- the lower part of the duct 20 communicates with the internal space of the machine room 3.
- Compressor 15, condenser 16, expansion valve 17 and fan 18 are arranged in the internal space of machine room 3.
- the partition wall 14 is disposed in a state parallel to the upper surface of the machine room 3 (the bottom surface 4 c of the display chamber 4).
- a duct 14 a is formed on the back side of the upper surface of the machine room 3.
- the duct 14 a communicates the suction port 13 and the lower part of the duct 12.
- a fan 22 for circulating cold air is arranged in the duct 14a. The fan 22 sucks air from the suction port 13 and sends the sucked air to the lower part of the duct 12 through the duct 14a.
- the evaporator 23 is arranged at the lower part of the duct 12.
- the position of the evaporator 23 is below the side outlets 7ax, 7ay of the lowermost cool air outlet 7.
- the dimension of the left-right width direction of the evaporator 23 is substantially the same as the dimension from the left end of the left side blowing part 7ax to the right end of the right side blowing part 7ay.
- a large number of punching holes 27 for introducing outside air are formed in the plate constituting the front portion of the machine room 3.
- outside air is introduced into the machine chamber 3 through the punching holes 27.
- the introduced outside air rises in temperature through the condenser 16 and further cools the compressor 15 to become high temperature.
- the hot air flows through the duct 20 to the opening 21 and is discharged out of the main body 1 from the opening 21.
- the compressor 15, the condenser 16, the expansion valve 17, and the evaporator 23 are sequentially connected through a refrigerant pipe. This connection constitutes a refrigeration cycle.
- FIG. 8 is a cross-sectional view of the main body 1.
- guide plates (first guide plates) 25ax are arranged in the duct 12 at the upper edge of the opening of each left side blowing portion 7ax, and above the opening of each right side blowing portion 7ay.
- a guide plate (first guide plate) 25ay is arranged at each edge, and a guide plate (second guide plate) 25b is arranged at each upper opening edge of each center outlet 7b.
- the guide plates 25ax, 25ay, 25b are L-shaped steel plates as shown in FIG. 9, the standing portion A is fixed to the back surface of the back surface 4a by, for example, welding, and the flat surface portion (baffle plate portion) B is the duct 12. Project into the inner space.
- the flat portion B of the guide plates 25ax, 25ay guides a part of the cold air passing through the duct 12 to the side blowing portions 7ax, 7ay.
- the flat portion B of the guide plate 25b guides a part of the cool air passing through the duct 12 to each center blowing portion 7b.
- the vertical dimension H of the standing portion A of the guide plates 25ax, 25ay is about 10 mm.
- the protruding length T in the front-rear depth direction of the flat portion B of the guide plates 25ax, 25ay is about 20 mm.
- the dimension (full length) L in the left-right width direction of the standing portion A of the guide plates 25ax and 25ay and the dimension (full length) L in the left-right width direction of the plane portion B are about 40 mm.
- the dimension H in the vertical height direction of the standing portion A of the guide plate 25b is about 10 mm.
- the protruding length T in the front-rear depth direction of the flat portion B of the guide plate 25b is about 10 mm.
- the dimension (full length) L in the left-right width direction of the standing portion A of the guide plate 25b and the dimension (full length) L in the left-right width direction of the plane portion B are about 1600 mm.
- the protruding length T of the flat portion B of the guide plates 25ax and 25ay is about 20 mm, whereas the protruding length T of the flat portion B of the guide plate 25b is about 10 mm.
- the side blowing portions 7ax and 7ay in the left-right width direction respectively.
- an appropriate amount of cold air can be taken into the side outlets 7ax, 7ay and the center outlet 7b. The cold air taken into the side blowing parts 7ax, 7ay and the center blowing part 7b is blown into the display chamber 4.
- the compressor 15 sucks, compresses and discharges the refrigerant.
- the high-temperature and high-pressure gas refrigerant discharged from the compressor 15 flows to the condenser 16.
- the gas refrigerant that has flowed to the condenser 16 is condensed by exchanging heat with the outside air sucked by the operation of the fan 18.
- the liquid refrigerant flowing out of the condenser 16 flows to the evaporator 23 through the expansion valve 17.
- the liquid refrigerant that has flowed to the evaporator 23 is evaporated by exchanging heat with the air sent from the fan 22.
- the gas refrigerant flowing out from the evaporator 23 is sucked into the compressor 15.
- the air heated by cooling the products on each shelf 5 by the operation of the fan 22 and the air curtain air flowing along the front opening 41, the left side opening 42, and the right side opening 43 are sucked in. It is taken into the mouth 13.
- the air taken into the suction port 13 flows to the evaporator 23 through the duct 14a.
- the air that has flowed into the evaporator 23 is deprived of heat by the refrigerant in the evaporator 23 and decreases in temperature to become cold.
- the cold air that has passed through the evaporator 23 rises in the duct 12.
- a part of the cool air rising in the duct 12 is guided to each cool air outlet 7 by the guide plates 25ax, 25ay, 25b, and blown out from each cool air outlet 7 to the display chamber 4.
- the cold air blown out cools the products on each shelf 5.
- the cold air can be efficiently guided to each cold air outlet 7 by the action of the guide plates 25ax, 25ay, 25b.
- the protruding length T of the flat portion B of the guide plates 25ax and 25ay is different from the protruding length T of the flat portion B of the guide plate 25b, the side blowing portions 7ax, 7ay of the cold air outlets 7 and An appropriate amount of cold air is blown out from the center blowing portion 7b.
- the protruding length T of the flat portion B of the guide plates 25ax and 25ay is the same as the protruding length T of the flat portion B of the guide plate 25b, the per-unit area at the opening of the side blowing portions 7ax and 7ay.
- the amount of ventilation becomes smaller than the amount of ventilation per unit area at the opening of the center outlet 7b.
- the projection length T of the planar portion B of the guide plates 25ax, 25ay corresponding to the side blowing portions 7ax, 7ay is the projection length T of the planar portion B of the guide plate 25b corresponding to the center blowing portion 7b. Since it is made longer, the air flow per unit area in the opening of the side blowing portions 7ax, 7ay can be set to be equal to or more than the air flow per unit area in the opening of the center blowing portion 7b. With this setting, a sufficient amount of cold air can be sent to the products placed on the front corners of each shelf 5. That is, all the commodities on each shelf 5 can be appropriately cooled.
- a cooling unit that supplies cold air into the display chamber 4 by the refrigeration cycle, the cold air outlet 7, the duct 12, the suction port 13, the duct 14a, the fan 22, the guide plates 25ax, 25ay, 25b, the adjusting plate 25z described later, and the like. Is configured.
- the cold air reaching the upper part of the duct 12 flows into the duct 11 in the top plate 2.
- the cold air that has flowed into the duct 11 is guided to the air curtain outlet 10 and blown downward from the side outlets 10ax and 10ay and the center outlet 10b of the air curtain outlet 10.
- the flow of the cool air blown from the side blowing portions 10ax, 10ay and the center blowing portion 10b becomes an air curtain along the front opening 41, the left side opening 42, and the right side opening 43 of the display chamber 4.
- This air curtain By this air curtain, entry of external air from the outside of the main body 1 to the display chamber 4 is prevented. Since the penetration of external air can be prevented, the cooling efficiency for the products in the display chamber 4 is improved.
- the cool air blown out from the air curtain outlet 10 and flows downward, and the cold air blown out from the cold air outlet 7 to cool the products on the shelves 5 are in a negative pressure state due to the operation of the fans 22. 13 is efficiently sucked in a mixed state.
- the air-fuel mixture sucked into the suction port 13 flows through the duct 14a to the evaporator 23 and circulates in the above-described path.
- the products on each shelf 5 can be cooled uniformly and efficiently. Can do.
- the product in the display room 4 can be confirmed with good visibility from any of the front side, the left side, and the right side. Therefore, the display effect of goods improves. Even when a person stands in front of the front opening 41, the product in the display chamber 4 can be easily taken out through the left side opening 42 or the right side opening 43 without any trouble. Therefore, the sales efficiency of the product is improved.
- the main body 1 Since the relationship between the dimension Fa in the left-right width direction of the main body 1 and the dimension Fb in the front-rear depth direction of the main body 1 is Fa ⁇ Fb, the main body 1 becomes very compact and the installation area of the main body 1 can be reduced. Therefore, the main body 1 can be installed even in a store such as a small-scale convenience store or a relatively small supermarket. The loading work of the main body 1 and the carrying-in work to the installation place are also facilitated.
- each cold air outlet 7 it is necessary to aim at an optimal distribution of the blown air volume from the side blowing parts 7ax, 7ay and the blown air quantity from the center blowing part 7b.
- the straightness of the blowing air from the side blowing portions 7ax, 7ay and the center blowing portion 7b is also important.
- strong cold air immediately after passing through the evaporator 23 blows upward. Most of the cold air flowing upward flows near the surface of the smooth partition plate 19. The amount of cold air flowing to each cold air outlet 7 side is small.
- guide plates 25ax, 25ay, 25b are arranged in the duct 12.
- most of the cool air flowing upward flows toward the surface of the smooth partition plate 19, and the amount of cool air flowing to each cool air outlet 7 side is reduced.
- the amount of cool air blown out from each cool air outlet 7 into the display chamber 4 becomes insufficient.
- FIG. 10 schematically shows a partial longitudinal section of the main body 1.
- FIG. 11 is an enlarged view of a part of FIG.
- FIG. 12 shows the appearance of the adjustment plate 25z.
- the adjustment plate 25z is an L-shaped steel plate similar to the guide plates 25ax, 25ay, 25b, the standing portion C is fixed to the surface of the partition plate 19, for example, by welding, and the flat surface portion (baffle plate portion) D is the duct 12. Project into the inner space.
- the mounting position of the adjusting plate 25z is opposite to the guide plates 25ax, 25ay, 25b disposed on the upper edge of the opening of the lowermost cold air outlet 7.
- the lowermost cold air outlet 7 blows out cold air into the cooling space on the lowermost shelf 5Z shown in FIG.
- the guide plates 25ax, 25ay, and 25b are attached to the back surface of the back surface 4a, whereas the adjustment plate 25z is attached to the surface of the partition plate 19.
- the flat portion B of the guide plates 25ax, 25ay, 25b and the flat portion D of the adjustment plate 25z protrude into the space in the duct 12 in a state of facing each other.
- the position in the vertical height direction of the flat surface portion D of the adjustment plate 25z is slightly higher than the position in the vertical height direction of the flat surface portion B of the guide plates 25ax, 25ay, 25b. .
- the adjustment plate 25z and the guide plate 25ax are the same, the adjustment plate 25z and the guide plate 25ax, The air path between 25ay and 25b is narrowed and the ventilation resistance is increased. This is not preferred.
- the cold air whose temperature has been lowered by exchanging heat with the evaporator 23 rises in the duct 12. A part of the rising cold air is led to the lowermost cold air outlet 7 by colliding with the lowermost guide plates 25ax, 25ay, 25b. The cold air led to the lowermost cold air outlet 7 is blown out from the lowermost cold air outlet 7 to the cooling space on the lowermost shelf 5. The blown-out cool air cools the products on the lowest shelf 5.
- the remaining cold air that does not flow into the lowermost cold air outlet 7 passes through the gap between the front edge Bm of the flat surface portion B of the lowermost guide plates 25ax, 25ay, 25b and the front edge Dn of the flat surface portion D of the adjustment plate 25z. And partly collides with the flat surface portion D of the adjustment plate 25z.
- the cold air that has collided with the flat portion D of the adjustment plate 25z joins the flow of the cold air that rises through the gap after the flow velocity is reduced.
- the chilled air after merging also flows to each guide plate 25ax, 25ay, 25b side (near the center of the duct 12) without being shifted toward the surface of the partition plate 19. Thereby, the cold air in the duct 12 is efficiently guided to the cold air outlets 7 in the second and subsequent stages from the bottom.
- the evaporator 23 Considering the case where the vertical height position of the flat surface portion D of the adjustment plate 25z is lower than the vertical height position of the flat surface portion B of the lowermost guide plates 25ax, 25ay, 25b, the evaporator 23. A part of the cool air rising after passing through the flat plate portion D of the adjusting plate 25z first collides. The flow of cool air after colliding with the adjusting plate 25z is directed in the direction in which the lowermost guide plates 25ax, 25ay, 25b exist.
- the position in the vertical height direction of the planar portion D of the adjustment plate 25z is set higher than the position in the vertical height direction of the planar portion B of the guide plates 25ax, 25ay, 25b. is required.
- the adjusting plate 25z it is not necessary to arrange the adjusting plate 25z for each cold air outlet 7, and it is sufficient if it is arranged only for the lowermost cold air outlet 7. That is, as described above, the cold air that has passed through the adjustment plate 25z flows in the vicinity of the center of the duct 12 without being shifted toward the surface of the partition plate 19, so that the adjustment is made to each cold air outlet 7 in the second and subsequent stages from the bottom. Even without the plate 25z, a sufficient amount of cold air can be guided only by the guide plates 25ax, 25ay, 25b.
- a sufficient amount of cool air for the air curtain can be guided to the air curtain outlet 10 by appropriately setting the protruding dimensions of the guide plates 25ax, 25ay, 25b at each of the cool air outlets 7.
- a notch Di is formed at a substantially central portion in the left-right width direction of the flat portion D of the adjustment plate 25z.
- the dimensions Dx and Dy in the left-right width direction are adjusted appropriately.
- the amount of air blown from the side air outlets 7ax, 7ay of each cold air outlet 7 can be made larger than the amount of air blown from the center outlet 7b of each cold air outlet 7. .
- the amount of cold air blown out from each cold air outlet 7 can be increased while preventing the amount of cold air reaching the air curtain outlet 10 from being reduced.
- the projection length T1 in the front-rear depth direction of the plane portion D and the recess length T2 in the front-rear depth direction of the notch Di are set. It is not necessary to make the protrusion length T of the flat portion B of the plate 25b different. For example, if the protruding length T of the flat portion B of the guide plates 25ax and 25ay is the same as the protruding length T of the flat portion B of the guide plate 25b, the guide plates 25ax and 25ay and the guide plate 25b are shared by one sheet. It is possible to bend and form the plate.
- FIGS. 1-10 Specific examples of the shelves 5 arranged in the display room 4 are shown in FIGS.
- the shelf 5 in FIG. 14 has a generally rectangular shape in plan view, and in particular, the front-side corners Ga close to the front opening 41 are formed in a so-called curved shape by chamfering.
- the shelf 5 of FIG. 15 is generally rectangular in plan view, and in particular, the front side corners Gb close to the front opening 41 are formed into a linear so-called C shape by chamfering.
- a steel plate 51 in which a large number of relatively small circular vent holes Pa are arranged in a vertical and horizontal direction is arranged in the cold air outlet 7, the air curtain outlet 10, and the inlet 13. .
- a steel plate 52 in which a large number of relatively small diameter circular air holes Pb are arranged in a staggered manner may be arranged instead of the steel plate 51.
- a steel plate 53 in which a number of relatively small-diameter elliptical vent holes Pc are arranged in a vertical and horizontal order may be arranged in place of the steel plate 51.
- a steel plate 54 in which a large number of elliptical vent holes Pd having relatively small diameters are arranged in a vertical and horizontal order may be arranged instead of the steel plate 51.
- each ventilation hole Pc is along the left-right width direction of the main body 1.
- the longitudinal direction of each vent Pd is along the direction orthogonal to the left-right width direction of the main body 1.
- a steel plate having a honeycomb structure or a mesh structure may be used. Not only a steel plate but a plate of other materials may be used.
- the main body 1 includes the three-sided open display chamber 4, and the relationship between the dimension Fa in the left-right width direction and the dimension Fb in the front-rear depth direction of the main body 1 is Fa ⁇ Fb.
- the air curtain outlet 10 includes a left side outlet 10ax formed along the upper edge 42a of the left side opening 42, a right side outlet 10ay formed along the upper edge 43a of the right side opening 43, and A center outlet 10b formed along the upper edge 41a of the front opening 41 is included.
- the display chamber 4 includes a plurality of, for example, four-level shelves 5. Each cold air outlet 7 faces a cooling space on each shelf 5.
- Each cold air outlet 7 has a left side outlet 7ax formed along the left edge 4x in the left-right width direction of the back surface 4a, and a right formed along the right edge 4y in the left-right width direction of the back 4a.
- the center blowing part 7b formed between the side blowing parts 7ax and 7ay in the side blowing part 7ay and the back surface 4a is included.
- the cold air blown out from the common evaporator 23 must be used as the cold air blown out from the cold air blow-out port 7 and the cold air blown out from the air curtain blow-out port 10. If the amount of cold air blown out from the cold air outlet 7 is larger than necessary, the air curtain cold air blown out from the air curtain outlet 10 is pushed outward from the front surface of the main body 1, and the air curtain There is no meaning provided. Furthermore, if the amount of cold air blown down from the air curtain outlet 10 is more than necessary, the amount of cold air blown out from the cold air outlet 7 decreases, and the cooling efficiency for the products on each shelf 5 decreases. .
- the air volume from each cold air outlet 7 and the air volume from the air curtain outlet 10 are set in a state where the total amount of cool air blown out from each cold air outlet 7 and the air curtain outlet 10 is constant.
- the temperature change of the product on the uppermost (first) shelf 5 and the temperature change of the product on the lowermost (fourth) shelf 5 must be within an allowable range. Don't be.
- FIG. 21 shows the relationship between the air curtain air volume ratio and the product temperature in the display room 4.
- the air curtain air volume ratio (%) on the horizontal axis in FIG. 21 is “air curtain air volume”, which is the amount of cool air blown from the air curtain outlet 10, and the air curtain outlet 10 and each cold air outlet 7. It is the ratio of “total air volume”, which is the amount of total cold air (air curtain air volume / total air volume).
- the average temperature of each product placed in the four corners of the bottom shelf 5 is obtained by simulation, and a straight line approximation of the obtained values is indicated by a solid line rising to the right in FIG. 21 as “the bottom product temperature change”. Show.
- the average temperature of each product placed in the four corners of the uppermost shelf 5 is obtained by simulation, and a straight line approximation of the obtained values as “the uppermost product temperature change” is indicated by a solid line descending to the right in FIG. Show.
- an appropriate reference value of the product temperature in the showcase is set to a target value, for example, a range of ⁇ 2 ° C. centering on 7 ° C. “5 ° C. to 9 ° C.”.
- a target value for example, a range of ⁇ 2 ° C. centering on 7 ° C. “5 ° C. to 9 ° C.”.
- the product temperature on the second shelf 5, which is an intermediate stage corresponds to “the uppermost product temperature change” in FIG.
- the product temperature on, for example, the third shelf 5, which is the intermediate stage corresponds to the “lowermost product temperature change” in FIG.
- the “top product temperature change” in FIG. 21 always falls within the set range “5 ° C. to 9 ° C.” even if the air curtain air flow ratio is changed in the range of 40% to 85%.
- the “lowermost product temperature change” in FIG. 21 falls within the set range “5 ° C. to 9 ° C.” when the air curtain air volume ratio is a value included in the range of 48% to 78%.
- the air curtain air volume ratio is set to a value included in the range of 55% to 65% so that the fluctuation of the product temperature is within the range of “6 ° C. to 8 ° C.” of ⁇ 1 ° C. centering on the target value of 7 ° It is desirable to set.
- the product temperature on the upper two tiers (the uppermost and second tiers) shelves 5 is higher than the air blown out from each cold air outlet 7. 10 is affected by the cold air blown out from the air curtain.
- the product temperature on the shelves 5 of the lower two stages (third and lowermost stages) is affected by the cold air blown out from each cold air outlet 7 rather than the cold air for the air curtain.
- FIG. 22 shows the relationship between the center air volume ratio at the air curtain outlet 10 and the product temperature in the display chamber 4.
- the center air volume ratio is the “center air volume” which is the amount of cool air blown from the center outlet 10b of the air curtain outlet 10, and the air outlets 10ax, 10ay and the center outlet 10b of the air curtain outlet 10. It is a ratio (center air volume / total air volume) to the “total air volume” which is the amount of total cool air to be generated.
- a target value for example, a range of ⁇ 2 ° C centering on 7 ° C (5 ° C to 9 ° C) A value included in the range of 31% to 87% may be set.
- the product temperature on the upper two shelves 5 is lowest when the center air volume ratio is 55%, and rises regardless of whether the center air volume ratio increases or decreases at the boundary of 55%.
- the center air volume ratio is 55%, the amount of cool air blown out from the left side blowing section 10ax and the right side blowing section 10ay is 42%.
- the center air volume ratio is set to a value included in the range of 35% to 82% so that the fluctuation of the product temperature is within the range “6 ° C. to 8 ° C.” of ⁇ 1 ° C. centering on the target value of 7 ° C. It is desirable to do.
- an air curtain having an appropriate air volume can be formed in the front opening 41, the left side opening 42, and the right side opening 43 of the display chamber 4.
- This air curtain prevents the outside air from entering the display chamber 4 from the outside of the main body 1. Since intrusion of external air can be prevented, the cooling efficiency for the products in the display chamber 4 can be improved, and unnecessary frosting on the products in the display chamber 4 can be prevented.
- the air path from the air curtain outlet 10 on the ceiling surface 4b to the inlet 13 on the bottom surface 4c is set to be within the vertical direction or an angle range of ⁇ 5 ° with respect to the vertical direction.
- the air curtain is stable and not easily collapsed. Thereby, intrusion of outside air into the display chamber 4 can be prevented more reliably, and the cooling efficiency for the products in the display chamber 4 is further increased.
- FIG. 23 is a view of the appearance of the main body 1 as viewed from the front
- FIG. 24 is a view of the appearance of the main body 1 as viewed from the side.
- the guide plate 32 is disposed in the left side opening 42 of the main body 1.
- a guide plate 33 is disposed in the right side opening 43 of the main body 1.
- the guide plate 32 closes a partial region on the back side in the front-rear depth direction out of the entire region of the right side opening 42.
- the flow of cold air blown from the left side blowout part 7ax of each cold air outlet 7 is rectified along the inner peripheral surface of the guide plate 32.
- the rectified cool air efficiently and smoothly flows along the left side opening 42 and hardly intersects with air outside the left side opening 42.
- the space on the back side in the front-rear depth direction of the display chamber 4 is hidden by the guide plate 32, the space to be hidden is only a part on the back side.
- the guide plate 33 closes a partial region on the back side in the front-rear depth direction out of the entire region of the right side opening 43.
- the flow of cold air blown out from the right side blowout portion 7ay of each cold air outlet 7 is rectified along the inner peripheral surface of the guide plate 33.
- the rectified cool air efficiently and smoothly flows along the left side opening 43 and hardly intersects with the air outside the left side opening 43.
- the space on the back side in the front-rear depth direction of the display chamber 4 is hidden by the guide plate 33, but the space to be hidden is only a part on the back side.
- the cooling efficiency for the products in the display chamber 4 can be further increased. Since only a part of the left side opening 42 is blocked by the guide plate 32, the visibility in the display chamber 4 through the left side opening 42 can be sufficiently maintained, and the product from the left side opening 42 can be kept. It is easy to take out. Since the right side opening 43 is only partially blocked by the guide plate 33, the visibility in the display chamber 4 through the right side opening 43 can be sufficiently maintained, and the product from the right side opening 43 can be maintained. It is easy to take out.
- Other configurations of the main body 1 are the same as those in the above embodiment. Therefore, the description is omitted.
- the open showcase of the embodiment of the present invention can be used in a small convenience store or a relatively small supermarket.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Freezers Or Refrigerated Showcases (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
図1はオープンショーケースの外観を正面から見た図、図2はオープンショーケースの外観を側面側から見た図である。オープンショーケースの陳列室は、前面・左側面・右側面の3つの面が開放された三面開放形である。
図3は本体1の縦断面を概略的に示す図である。図4は陳列室4の天井面4bを斜め下方から見た図である。図5は陳列室4の背面4aを正面から見た図である。図6は陳列室4の底面4cを斜め上方から見た図である。これら図4~図6中のハッチング部分は、各棚5の取付け位置を示している。
好ましくは、商品温度の変動が目標値7℃を中心とする±1℃の範囲“6℃~8℃”に収まるように、エアカーテン風量比を55%~65%の範囲に含まれる値に設定するのが望ましい。
本体1の他の構成は、上記実施形態と同じである。よって、その説明は省略する。
Claims (9)
- 左右幅方向の寸法Faと前後奥行き方向の寸法Fbとの関係がFa≧Fbである本体と、
前記本体内に配置され、かつ前面開口部、左側面開口部、右側面開口部を有し、これら前面開口部、左側面開口部、右側面開口部を通して前記本体外に露出する陳列室と、
前記陳列室内に冷気を供給する冷却部と、
を備えることを特徴とするオープンショーケース。 - 前記冷却部は、
圧縮機、凝縮器、膨張弁、蒸発器を接続して構成される冷凍サイクルと、
前記陳列室内の空気を吸込んで前記蒸発器に通すファンと、
前記蒸発器を経た冷気を前記陳列室に導くダクトと、
を含む
ことを特徴とする請求項1記載のオープンショーケース。 - 前記冷却部は、
前記陳列室の背面に配置され、前記ダクト内の冷気を前記陳列室内に吹出す複数の冷気吹出口と、
前記陳列室の天井面に配置され、前記ダクト内の冷気を前面開口部、左側面開口部、右側面開口部に沿って流れるエアカーテン用の冷気として吹出すエアカーテン吹出口と、
前記陳列室の底面に配置され、前記陳列室内の空気および前記エアカーテン用の冷気を吸込む吸込口と、
をさらに含む
ことを特徴とする請求項2記載のオープンショーケース。 - 前記複数の冷気吹出口は、前記左側面開口部と隣接する位置に形成され、上下高さ方向に長い縦長形状の左サイド吹出部と、前記右側面開口部と隣接する位置に形成され、上下高さ方向に長い縦長形状の右サイド吹出部と、これら左サイド吹出部および右サイド吹出部の相互間に形成され、左右幅方向に延びる横長形状のセンタ吹出部と、を含み、
前記エアカーテン吹出口は、前記左側面開口部の上縁に沿って形成され、前後奥行き方向に長い縦長形状の左サイド吹出部と、前記右側面開口部の上縁に沿って形成され、前後奥行き方向に長い縦長形状の右サイド吹出部と、これら左サイド吹出部および右サイド吹出部の相互間に配置され、左右幅方向に延びる横長形状のセンタ吹出部と、を含み、
前記吸込口は、前記左側面開口部の下縁に沿って形成され、前後奥行き方向に長い縦長形状の左サイド吹出部と、前記右側面開口部の下縁に沿って形成され、前後奥行き方向に長い縦長形状の右サイド吹出部と、これら左サイド吹出部および右サイド吹出部の相互間に配置され、左右幅方向に延びる横長形状のセンタ吹出部と、を含む、
ことを特徴とする請求項3記載のオープンショーケース。 - 前記冷却部は、
前記ダクト内の冷気の一部を前記各冷気吹出口の左サイド吹出部および右サイド吹出部に導く複数の第1案内板と、
前記ダクト内の冷気の一部を前記各冷気吹出口のセンタ吹出部に導く複数の第2案内板と、
をさらに含む
ことを特徴とする請求項3記載のオープンショーケース。 - 前記冷却部は、
前記ダクト内の冷気の流れを前記各第1案内板および前記各第2案内板側にも流れるように調整する少なくとも1つの調整板
をさらに含む
ことを特徴とする請求項5記載のオープンショーケース。 - 前記陳列室に配置され、前記前面開口部に近い前面側両角部が面取り加工された商品載置用の複数段の棚、
をさらに備え、
前記各冷気吹出口は、前記各棚板上の冷却用空間と対応する位置にそれぞれ配置される
ことを特徴とする請求項3記載のオープンショーケース。 - 前記エアカーテン吹出口から吹出される冷気の量と、前記エアカーテン吹出口および前記各冷気吹出口から吹出される全冷気の量との比は、48%~78%の範囲に含まれるであり、好ましくは55%~65%の範囲に含まれる値である、
ことを特徴とする請求項3記載のオープンショーケース。 - 前記エアカーテン吹出口のセンタ吹出部から吹出される冷気の量と、前記エアカーテン吹出口の左サイド吹出部、右サイド吹出部、センタ吹出部から吹出される全冷気の量との比(センタ風量/全体風量)は、31%~87%の範囲に含まれる値であり、好ましくは35%~82%の範囲に含まれる値である
ことを特徴とする請求項3記載のオープンショーケース。
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IT201700063123A1 (it) * | 2017-06-08 | 2018-12-08 | Arneg | Gruppo espositore refrigerato e relativo sistema di distribuzione dei flussi di aria refrigerata. |
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US10016071B2 (en) * | 2016-05-31 | 2018-07-10 | Pepsico, Inc. | Product merchandising systems and methods |
DE102018112441A1 (de) * | 2018-05-24 | 2019-11-28 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Absaugvorrichtung für ein Kühlmöbel |
CN116202286A (zh) * | 2021-11-30 | 2023-06-02 | 青岛海尔电冰箱有限公司 | 用于制冷设备的熟成抽屉及制冷设备 |
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IT201700063123A1 (it) * | 2017-06-08 | 2018-12-08 | Arneg | Gruppo espositore refrigerato e relativo sistema di distribuzione dei flussi di aria refrigerata. |
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