JP2008039213A - Open showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce temperature variation in a storage chamber. <P>SOLUTION: This open showcase has the storage chamber 2 opened at its top face and having a square periphery in a plane view, and a cold air passage 3 formed at a lower side of the storage chamber 2. The cold air passage 3 has a suction opening 7 formed along a front side and right peripheries 2a, 2b adjacent to each other, and a supply opening 6 faced to the front side and the right peripheries 2a, 2b through the storage chamber 2. An air distribution fan 12 faced to the periphery 2a at the front side and a heat exchanger 13 disposed at an air distribution downstream side of the air distribution fan 12 are disposed in the cold air passage 5, and the air distribution downstream side of the heat exchanger 13 is connected to the supply opening 6. An air intake fan 15 is disposed between the suction opening 7 of the right periphery 2b and the cold air passage 3, and the cold air is sucked to the cold air passage 3 from the suction opening 7 of the right periphery 2b by the air intake fan 15. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an open showcase for storing objects such as fresh foods, beverages and frozen products in a storage room having an upper surface opened in a refrigerated or frozen state.

  Patent Documents 1 to 3 include the storage chamber having a polygonal periphery in plan view, and a cold air passage formed on the lower side of the storage chamber, and by a blower fan arranged in the cold air passage, An open showcase is disclosed in which cool air in the storage chamber is sucked into the cool air passage from the suction port arranged around the storage chamber, and then cooled by a heat exchanger disposed in the cool air passage, and the cool air is blown out from the outlet. ing.

Japanese Patent Laid-Open No. 11-159938 (FIGS. 1-3) Japanese Patent Laying-Open No. 2005-30656 (FIG. 1-2) Japanese Patent Laying-Open No. 2006-162118 (FIG. 1-2)

  In the open showcases of Patent Documents 1 to 3, the blower fan is arranged so as to face any one of the periphery of the storage chamber. For this reason, a large amount of cold air is sucked from the suction port provided in the vicinity of the storage chamber facing the blower fan, while the amount of cold air sucked from the suction port provided in the vicinity of the storage chamber not facing the blower fan Will be less.

  In particular, the corner of the containment room is far from the air outlet, so it is difficult for the cold air blown out from the air outlet to reach, and the amount of cold air that is sucked in from the air intake is close to the vicinity of the accommodation room where the blower fan does not face. There will be less. For this reason, there is a problem where temperature unevenness occurs in the accommodation chamber.

  The objective of this invention is providing the open showcase which can reduce the temperature nonuniformity in a storage chamber.

  As shown in FIGS. 1 to 3, the open showcase to which the present invention is directed is a storage chamber 2 having a polygonal periphery in a plan view with its upper surface open, and cold air formed below the storage chamber 2. The cool air passage 3 includes a suction port 7 disposed along at least two adjacent sides 2a and 2b in the periphery of the storage chamber 2, and a storage chamber 2 in which the suction port 7 is disposed. It has an outlet 6 facing the surroundings 2a and 2b through the storage chamber 2, and the cold air passage 5 has a suction port 7 of the surroundings 2a and 2b around the storage chamber 2 An air blower 12 disposed facing either side 2a and a heat exchanger 13 disposed on the air blowing downstream side of the air blowing fan 12 are disposed, and the air blowing downstream side of the heat exchanger 13 is connected to the air outlet 6. Yes.

  Here, the storage chamber 2 corresponds to a triangular shape, a quadrangular shape, a pentagonal shape, or the like in plan view. The suction port 7 corresponds to one in which a plurality of small openings are arranged along the periphery 2 a or 2 b of the storage chamber 2 or a long hole shape that extends along the periphery 2 a or 2 b of the storage chamber 2.

  As shown in FIG. 1 and FIG. 3, the present invention includes the suction port 7 in the periphery 2 b of the storage chamber 2 where the blower fan 12 does not face, and the cool air. An air intake fan 15 is interposed between the air passage 3 and the air intake fan 15 sucks cold air from the air inlet 7 in the periphery 2b of the housing chamber 2 where the air blowing fan 12 does not face into the air passage 3. .

  Furthermore, a corner intake fan 16 is interposed between the cool air passage 3 and the suction port 7 corresponding to the corner portion of the storage chamber 2 out of the surroundings 2a and 2b of the storage chamber 2 where the suction port 7 is arranged. The cool air can be sucked into the cool air passage 3 from the suction port 7 corresponding to the corner portion of the storage chamber 2 by the corner intake fan 16.

  The intake fan 15 can suck cold air from the suction port 7 in the periphery 2b of the storage chamber 2 where the blower fan 12 does not face into the cold air passage 3 via the damper 30.

  Specifically, as shown in FIG. 5, the damper 30 is connected to the suction port 7 in the periphery 2 b of the storage chamber 2 and accommodates the intake fan 15. The damper 30 is connected to the damper body 31 and is connected to the intake fan 15. The intake air adjusting unit 32 that guides the intake air to the cold air passage 3 can be provided, and the intake air adjusting unit 32 can adjust the ventilation area connected to the cold air passage 3.

  According to the present invention, the intake fan 15 can sufficiently suck in cool air from the suction port 7 in the periphery 2b of the storage chamber 2 where the blower fan 12 does not face, thereby ensuring the circulation of the cool air in the entire storage chamber 2. Can be aimed at. Therefore, temperature unevenness hardly occurs in the entire storage chamber 2, and the entire storage chamber 2 can be reliably cooled.

  By providing the corner intake fan 16, the cool air can be sufficiently sucked into the cool air passage 3 from the suction port 7 corresponding to the corner portion of the storage chamber 2 where the cool air blown out from the blow outlet 6 is difficult to reach. This circulation can be achieved more reliably in the entire storage chamber 2, and temperature unevenness is less likely to occur in the entire storage chamber 2, and the entire storage chamber 2 can be reliably cooled.

  The intake fan 15 sucks cold air into the cold air passage 3 through the damper 30 to prevent excessive intake of cold air from the suction port 7 in the periphery 2b of the housing chamber 2 where the blower fan 12 does not face to the cold air passage 3. Thus, the suction amount can be adjusted to an appropriate amount. As a result, temperature unevenness is less likely to occur in the entire storage chamber 2.

  The drawing shows an embodiment of an open showcase according to the present invention. As shown in FIGS. 1 to 3, the showcase body 1 includes a storage chamber 2 that is rectangular in plan view and has an open upper surface, and a cool air passage 3 formed below the storage chamber 2. Have. A columnar cold air blowing section 5 is erected on the left and rear corner of the storage chamber 2, and an outlet 6 for blowing cold air toward the storage chamber 2 at the upper end of the cold air blowing section 5. Is arranged.

  As shown in FIG. 1, the outer peripheral walls 10 and 11 erected on the adjacent front and right peripherals 2 a and 2 b among the four front and rear left and right peripherals of the storage chamber 2 have a plurality of small inlets 7. Are provided. That is, the suction ports 7 are provided side by side along the upper surfaces of the front and right outer peripheral walls 10 and 11. Each suction port 7 communicates with the cold air passage 3 through a passage 9 provided in the outer peripheral walls 10 and 11. Each suction port 7 is also provided on the inner surface of the outer peripheral walls 10 and 11 (see FIG. 5).

  In the cold air passage 3, four blower fans 12 arranged in the left-right direction facing the front periphery 2a of the storage chamber 2 in which the suction port 7 is arranged, and the blower downstream side of these blower fans 12 (FIG. 1). In the upper side) and arranged in the front-rear direction along the heat exchanger 13 that cools the cold air sucked from the suction ports 7 and the peripheral 2b on the right side of the storage chamber 2 where the blower fan 12 does not face. Three side air intake fans 15 and a corner air intake fan 16 disposed at a position corresponding to the right and front corner portion of the storage chamber 2 are provided.

  Each blower fan 12 is attached to a mounting plate 19 disposed on the front side of the heat exchanger 13. The heat exchanger 13 is connected to a cooling device (not shown) composed of a compressor, a condenser, and the like. This cooling device is, for example, a store building in the case of a freezer-type open showcase. In the case of an open showcase with a built-in refrigerator, it is placed inside the machine room 20 provided at the bottom of the showcase body 1 (see FIG. 2).

  As shown in FIG. 2 and FIG. 3, the air outlet 6 of the cold air outlet 5 is provided at the front and upper ends of the right side of the cold air outlet 5 so as to face the front and right peripherals 2 a and 2 b of the storage chamber 2, respectively. Each is provided. The air outlets 6 on the front surface and the right side of the cold air blowing part 5 are inclined downward so as to face the front and right peripherals 2a and 2b of the storage chamber 2 through the upper space of the storage chamber 2, respectively. A part of the cool air blown out from the air outlets 6 on the front and right sides of the cold air blowing part 5 is sucked from the air inlets 7 of the outer peripheral walls 10 and 11 of the housing chamber 2 to form the air curtain 22. In addition, a part of the cool air flows into the storage chamber 2 to cool the storage chamber 2.

  As shown in FIG. 2, each air outlet 6 communicates with the cold air passage 3 via an air supply duct 21 provided in the cold air blowing portion 5. The air supply duct 21 extends in the vertical direction, and the lower end of the air supply duct 21 is connected to the rear side (left side in FIG. 2) of the heat exchanger 13. That is, the cold air that has been cooled by passing through the heat exchanger 13 by the blowing action of the blower fan 12 is sent to each outlet 6 through the air supply duct 21.

  A plurality of upper and lower shelves 17 are arranged on the front surface and the right side surface of the cold air blowing unit 5, and objects such as fresh food and beverages are placed on the respective shelves 17 and the bottom surface of the storage chamber 2. The width of each shelf 17 increases toward the lower side, and each shelf 17 is located inside the air curtain 22. Each air outlet 6 is provided with an air conditioning member for adjusting the flow of cool air. The outer wall of the showcase body 1 has a heat insulating structure.

  As shown in FIG. 3, a horizontally long chamber 23 is disposed at the lower end portion of the cold air blowing portion 5. As shown in FIG. 1, the right half and right side of the front portion of the chamber 23 facing the storage chamber 2 are arranged. A plurality of small-mouth-like cold air blowing holes 25 are respectively provided on the edge of the upper surface with the portion. An air supply fan 26 is disposed in the chamber 23, and the air supply fan 26 is attached to the mounting plate 27 in a posture that is rightward and obliquely downward as shown in FIG. On the left side of the bottom surface of the chamber 23, a horizontally long vent hole 29 is formed, and the lower surface of the vent hole 29 faces the rear side of the heat exchanger 13 as shown in FIG.

  Then, a part of the cold air cooled by the heat exchanger 13 is sucked into the chamber 23 from the vent 29 and blown out from the cold air blowing holes 25 into the housing chamber 2. Thereby, the to-be-contained object accommodated in the back | inner side of the lower part of the storage chamber 2 which is far from the flow of the cold air blown diagonally from each blower outlet 6 of the cold air blowing part 5 can also be cooled reliably.

  As shown in FIG. 1, each side intake fan 15 is interposed between the suction port 7 in the periphery 2 b on the right side of the storage chamber 2 and the cold air passage 3, and as shown in FIGS. 5 and 6, It is accommodated in a damper 30 arranged in the portion 5 and extending in the front-rear direction. The damper 30 is connected to the passage 9 in the right outer peripheral wall 11, and is attached to the box-shaped damper main body 31 that accommodates each side intake fan 15 and the lower side of the damper main body 31. And a frame-like intake air adjusting unit 32 that guides the intake air into the cold air passage 3.

  The lower surface of the damper main body 31 is opened, and the side intake fans 15 are attached to the upper surface of the intake air adjusting unit 32 side by side in the front-rear direction. The front and rear surfaces of the intake air adjusting unit 32 are opened, and five blowout holes 33 are formed in the front-rear direction central portion of the left side surface 32a so as to be arranged in the front-rear direction. The area is adjusted. The left side surface 32 a of the intake air adjusting unit 32 has a smaller vertical width toward the rear side (left side in FIG. 5) in accordance with the inclination of the bottom surface of the cold air passage 3.

  The cold air sucked into the suction ports 7 of the right outer peripheral wall 11 flows into the damper main body 31 of the damper 30 through the passage 9 in the right outer peripheral wall 11 by the air blowing action of each side intake fan 15. After that, it flows into the intake air adjusting unit 32 and blows out into the cool air passage 3 from the front and rear of the intake air adjusting unit 32 and from the respective blowing holes 33. By passing through the damper 30, the amount of cold air sucked from the respective suction ports 7 of the right outer peripheral wall 11 and blown into the cold air passage 3 is adjusted.

  The corner intake fan 16 is interposed between the suction port 7 corresponding to the right side and near the front corner of the storage chamber 2 and the cool air passage 3. Cold air is sucked into the cold air passage 3 from the suction port 7 corresponding to. The corner intake fan 16 is attached to the lower surface of the box-shaped air guide cover 35. A support frame 36 is attached to the lower side of the air guide cover 35, and a gap is formed between the air guide cover 35 and the bottom surface of the cool air passage 3. Due to the air blowing action of the corner intake fan 16, the cold air drawn into the suction port 7 corresponding to the vicinity of the right side and front corner of the storage chamber 2 passes through the passage 9 in the outer peripheral walls 10 and 11 and enters the air guide cover 35. Then, the air is blown into the cold air passage 3 through a gap between the air guide cover 35 and the bottom surface of the cold air passage 3.

  The flow of the cold air as a whole will be described. As shown in FIG. 1, the cold air is sucked into the cold air passage 3 from the suction ports 7 of the outer peripheral wall 10 on the front side of the housing chamber 2 by the air blowing action of the air blowing fans 12. Moreover, after the cold air is sucked from the suction ports 7 of the outer peripheral wall 11 on the right side of the storage chamber 2 by the air blowing action of the side intake fans 15, the cold air is blown out into the cold air passage 3 through the damper 30. Further, by the air blowing action of the corner intake fan 16, the cold air corresponding to the right side of the storage chamber 2 and the vicinity of the front corner is sucked into the suction port 7 and then blown out into the cold air passage 3.

  The cold air blown into the cold air passage 3 is cooled by passing through the heat exchanger 13 by the air blowing action of each blower fan 12, and a part of the cooled cold air is an air supply duct in the cold air blowing unit 5. 21, the air is blown out from each air outlet 6, flows obliquely downward in the upper space of the storage chamber 2, and is sucked and circulated into each air inlet 7 of the front and right outer peripheral walls 10 and 11.

  A part of the cool air cooled by passing through the heat exchanger 13 is sucked into the chamber 23 from the vent hole 29 and blown out from the respective cold air blowing holes 25 of the chamber 23 into the housing chamber 2. After being cooled, the air is sucked into the suction ports 7 of the front outer peripheral wall 10 and the right outer peripheral wall 11. As shown in FIGS. 2 and 3, in this embodiment, in order to prevent cold air from flowing out of the storage chamber 2, a transparent outer dam plate 37 is erected upward on the outer sides of the front and right outer peripheral walls 10 and 11. Although provided, the outer dam plate 37 may not be provided.

  A suction port 7 may be provided on the left outer peripheral wall of the storage chamber 2. That is, the suction port 7 may be disposed along at least the two adjacent sides 2 a and 2 b in the periphery of the storage chamber 2, and may be disposed in the entire periphery of the storage chamber 2. In this case, the side intake fan 15 and the damper 30 are also provided on the left side in the cool air passage 3. Further, a corner intake fan 16 may be provided at the left and front corners.

Cross-sectional plan view of an open showcase according to the present invention AA line sectional view of FIG. BB sectional view of FIG. Longitudinal front view of chamber CC sectional view of FIG. DD sectional view of FIG.

Explanation of symbols

2 Containment chambers 2a and 2b Surroundings of the accommodation chamber 3 Cold air passage 5 Cold air outlet 6 Air outlet 7 Suction port 9 Air passage 10 · 11 Outer wall 12 Blower fan 13 Heat exchanger 15 Side intake fan 16 Corner intake fan 30 Damper 31 Damper Body 32 Intake adjuster

Claims (4)

A storage chamber (2) having a polygonal periphery in plan view with the upper surface open, and a cold air passage (3) formed below the storage chamber (2);
The cold air passage (3) includes a suction port (7) disposed along at least two adjacent sides (2a) and (2b) and a suction port (7) in the periphery of the storage chamber (2). A blower outlet (6) facing the periphery (2a) and (2b) of the chamber (2) through the storage chamber (2);
In the cold air passage (5), a blower fan (12) arranged facing one side (2a) of the periphery (2a) and (2b) of the storage chamber (2) provided with the suction port (7) ) And a heat exchanger (13) disposed on the downstream side of the blower fan (12),
In the open showcase where the air flow downstream side of the heat exchanger (13) is connected to the air outlet (6),
Outlet (7) in the periphery (2b) of the storage chamber (2) where the blower fan (12) does not face, out of the periphery (2a) and (2b) of the storage chamber (2) in which the suction port (7) is arranged And an intake fan (15) between the cool air passage (3) and
An open showcase in which cold air is sucked into the cold air passage (3) from the suction port (7) in the periphery (2b) of the housing chamber (2) where the blower fan (12) does not face by the intake fan (15) . Of the periphery (2a) and (2b) of the storage chamber (2) where the suction port (7) is arranged, the suction port (7) corresponding to the corner of the storage chamber (2) and the cold air passage (3) A corner intake fan (16) is interposed in between,
The open showcase according to claim 1, wherein the cool air is sucked into the cool air passage (3) from the suction port (7) corresponding to the corner portion of the storage chamber (2) by the corner intake fan (16).   The intake fan (15) sucks cold air from the suction port (7) in the vicinity (2b) of the housing chamber (2) where the blower fan (12) does not face through the damper (30) to the cold air passage (3). Item 3. An open showcase according to item 1 or 2. The damper (30) is connected to the suction port (7) in the periphery (2b) of the storage chamber (2) and is connected to the damper main body (31) for storing the intake fan (15), and the damper main body (31). An intake air adjustment section (32) for guiding intake air from the intake fan (15) into the cold air passage (3),
The open showcase according to claim 1, 2, or 3, wherein the intake air adjusting section (32) adjusts an air flow area connected to the cold air passage (3).

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