JP2005164168A - Open showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an open showcase with a display room open at its three faces, which is uniformly cooled. <P>SOLUTION: The open showcase 1 has the display room 8 formed above a heat insulating wall 2, which opens at its front and rear faces and one side face. It comprises cool air outlets 32-34 and cool air inlets 36-38 formed at the opening upper edges and the opening lower edges of the front and rear faces and the side face of the display room, respectively, a cool air duct 21 formed ranging from the bottom face of the heat insulating wall under the display room through a central portion of the display room to the upper side and communicated with the cool air outlets and the cool air inlets, a cooler 44 arranged in the cool air duct under the display room, and blowers 46, 47 for discharging cool air sucked from the cool air inlets into the cool air duct and heat exchanged with the cooler, from the cool air outlets through the cool air duct. The cooler is arranged corresponding to the openings of the front and rear faces and the side face of the display room, where refrigerant flows while bypassing over portions corresponding to the openings. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an open showcase formed by opening a total of three front and rear surfaces and one side surface of a display room.

Conventionally, an open showcase in which the front of the display room is opened is installed in supermarkets and convenience stores, and products such as beverages and foods are cooled and sold in the display room (for example, see Patent Document 1). . And such an open showcase is installed in the store so that two units form a row in the form of abutting the back of each, and a display room opens at the front and back and one side of the end of this row A three-sided open showcase was installed.
JP-A-4-350488

In this way, in the open showcase with the front and back surfaces and one side of the display room open, products can be displayed on the end surface side (opening side of one side), so the display sales effect is improved, but the display room Therefore, there is a problem that it is extremely difficult to cool the display chamber uniformly by discharging cool air from the cool air discharge port at the upper edge of the opening.
The present invention has been made to solve the conventional technical problems, and an object of the present invention is to uniformly cool the display chamber in an open showcase in which three surfaces of the display chamber are opened.

  The open showcase of the present invention is configured such that the front and rear surfaces and one side surface of the display chamber configured above the heat insulating wall are opened, and the upper and lower opening edges and the lower opening edge of the front and rear surfaces and side surfaces of the display chamber are provided. A cold air outlet and a cold air inlet formed respectively, and a cooling air duct configured to extend from the bottom of the heat insulating wall below the display chamber through the central portion of the display chamber and communicated with the cold air outlet and the cold air inlet; A cooler disposed in the cool air duct below the display room, and a blower for discharging the cool air sucked into the cool air duct from the cool air suction port and exchanged heat with the cooler through the cool air duct from the cool air discharge port And the cooler is arranged corresponding to the openings on the front and rear surfaces and the side surfaces of the display chamber, and the refrigerant flows while bypassing the portions corresponding to the openings.

  An open showcase according to a second aspect of the present invention is the above, wherein the cooler is composed of a refrigerant pipe through which the refrigerant flows and a plurality of heat exchange fins provided in the refrigerant pipe in a heat exchange manner. The fin corresponding to the corner portion formed by the opening and the opening on the side surface is deleted.

  An open showcase according to a third aspect of the present invention is characterized in that a control plate for controlling the flow of cold air is provided at a location where the fins are deleted in the cooler.

  An open showcase according to a fourth aspect of the present invention is characterized in that, in each of the above inventions, the air blower is disposed in a cold air duct inside a cooler disposed corresponding to each opening of the display chamber.

  The open showcase of the invention of claim 5 is the above-described first blower for causing the blower to discharge cold air from the cold air discharge opening at the front and rear surfaces of the display room, and the cold air discharge from the side opening of the display room. It is characterized by comprising a second blower for discharging cool air from the outlet.

  An open showcase according to a sixth aspect of the present invention is characterized in that, in each of the above-mentioned inventions, the machine room is provided below the heat insulating wall, and the exhaust duct extends from the machine room to above the display room.

  An open showcase according to a seventh aspect of the present invention is characterized in that a side plate for closing the other side of the display chamber is provided, and the exhaust duct is configured to exchange heat with the side plate.

  An open showcase according to an eighth aspect of the present invention includes a back plate that internally forms a cold air duct in the center of the display chamber and a deck pan that forms the bottom of the display chamber in each of the above-described inventions, and the lower portion of the back plate and the deck pan are attached and detached. The air blower is exposed in a state where it is free and removed.

  An open showcase according to a ninth aspect of the present invention provides a high pressure chamber in the cool air duct in the central portion of the display chamber on the air blower discharge side in each of the above inventions, and the cool air that has passed through the high pressure chamber is cooled in each opening of the display chamber A partition plate for distributing to the discharge ports is provided in the cold air duct.

  The open showcase of the invention of claim 10 is characterized in that, in the above, the partition plate distributes the cold air to substantially the entire area of the cold air discharge port of the opening on the side surface of the display chamber.

  The open showcase according to the invention of claim 11 is the above-described invention, wherein the bottom surface of the heat insulating wall is a slanted surface having a high central portion and a low inclined surface toward the peripheral portion, and the front and rear peripheral portions where the bottom surface of the heat insulating wall is lowest. It is characterized by the formation of a drain outlet.

  The open showcase of the invention of claim 12 is the machine room configured below the heat insulation wall in each of the above inventions, the exterior panel constituting the outer surface of the heat insulation wall, and the exterior panel corners on the opening side before and after the display room Angle material provided on the upper and lower sides of the part, front and back on each angle material, a rigid body that receives the load of the article in the display room, and an angle through the exterior panel located at the left and right ends of the machine room It is provided with the leg material which supports the left and right ends of the material.

  An open showcase according to a thirteenth aspect of the present invention is the display chamber according to each of the first and second aspects, wherein the heat insulating wall is attached to a first heat insulating wall member having an upper surface and left and right ends opened, and one side of the first heat insulating wall member. It is comprised from the 2nd heat insulation wall material which comprises the opening lower edge of one side, It is characterized by the above-mentioned.

  An open showcase according to a fourteenth aspect of the present invention provides a curved corner cap provided at a corner where the cold air suction opening of the front and rear surfaces of the display room and the cold air suction opening of the side surface of the display chamber intersect each other. The corner cap is characterized in that it is formed in a continuous shape of four pieces.

  According to the present invention, in the open showcase in which the front and rear surfaces and one side surface of the display chamber configured above the heat insulating wall are opened, the front and rear surfaces of the display chamber and the opening upper edge and the lower edge of the side surface are respectively formed. The cool air discharge port and the cool air suction port, the cool air duct that is connected to the cool air discharge port and the cool air suction port, and extends upward from the bottom surface of the heat insulating wall below the display room through the center of the display room, and the display A cooler disposed in the cool air duct below the room, and a blower for discharging the cool air sucked into the cool air duct from the cool air suction port and exchanging heat with the cooler from the cool air discharge port through the cool air duct. And the cooler is arranged corresponding to the front and rear surface and side opening of the display chamber, and the refrigerant flows while bypassing the portion corresponding to each opening. Vomiting from the upper edge of the opening It will allow to substantially uniform the temperature of the cool air to be. As a result, the temperature in the display chamber in which the front and rear surfaces and one side surface are open can be made uniform.

  According to the invention of claim 2, in addition to the above, the cooler includes a refrigerant pipe through which the refrigerant flows, and a plurality of heat exchange fins provided in the refrigerant pipe in a heat exchange manner. Since the fins corresponding to the corners formed by the openings and the side openings are eliminated, the cool air circulation in the display chamber at the corners formed by the front and rear openings and the side openings where the cooling effect becomes the worst. The cooling capacity can be improved and the cooling capacity can be improved.

  According to the invention of claim 3, since the control plate for controlling the cold air flow is provided at the place where the fin is removed in the cooler, the display at the corner portion formed by the opening on the front and rear surfaces and the opening on the side surface is provided. The indoor cooling effect can be adjusted by the control plate, and the temperature in the display room can be made uniform with higher accuracy.

  According to invention of Claim 4, in addition to said each invention, since the air blower was arrange | positioned in the cool air duct inside the cooler arrange | positioned corresponding to each opening of a display chamber, it respond | corresponds to each opening. It becomes possible to create a flow of cool air that converges from the outside to the inside of the arranged cooler, and it is possible to simplify the blower and the duct structure.

  According to the invention of claim 5, in addition to the above, the air blower is provided with a first blower for discharging cold air from the cold air discharge opening of the front and rear surfaces of the display chamber, and the cold air discharge of the side opening of the display chamber. Since the second blower for discharging cool air from the outlet is configured, the cooling effect of the opening front and rear display chambers and the side opening side display chamber is adjusted by adjusting the operation of each blower. As a result, the entire display chamber can be cooled more uniformly.

  According to the invention of claim 6, in addition to each of the above inventions, the machine room is provided below the heat insulating wall and the exhaust duct extending from the machine room to the upper part of the display room. Can be discharged to the upper part of the open showcase, and adverse effects due to exhaust to the equipment installed around the open showcase can be reduced.

  According to the invention of claim 7, in addition to the above, the side plate for closing the other side surface of the display chamber is provided, and the exhaust duct is configured to exchange heat with the side plate, so that the side plate is heated by the heat from the exhaust passing through the exhaust duct. It becomes possible to eliminate or suppress dew condensation.

  According to the invention of claim 8, in addition to each of the above-mentioned inventions, a back plate that constitutes the cold air duct in the center of the display chamber and a deck pan that forms the bottom of the display chamber are provided, and the lower portion of the back plate and the deck pan are attached and detached. Since the blower is exposed and exposed in a detached state, maintenance of the blower and cleaning of the cooler can be easily performed.

  According to the invention of claim 9, in addition to the above inventions, a high pressure chamber is formed in the cold air duct in the central portion of the display chamber on the blower discharge side, and the cold air passing through the high pressure chamber is cooled by the cold air in each opening of the display chamber. Since the partition plate for distributing to the discharge port is provided in the cold air duct, it is possible to discharge the cold air more uniformly from the cold air discharge port at the upper edge of each opening of the display chamber, and to cool the display chamber more uniformly. become.

  According to the invention of claim 10, in addition to the above, the partition plate distributes the cool air toward substantially the entire area of the cool air discharge opening on the side surface of the display chamber, so that the cool air rising in the cool air duct at the center of the display chamber is raised. Can be discharged more uniformly toward the opening on the side of the display chamber, and the cooling effect in the display chamber on the opening side of the side can be remarkably improved.

  According to the invention of claim 11, in addition to each of the above inventions, the bottom surface of the heat insulating wall is formed as a slanted surface having a high central portion and a low inclined surface toward the peripheral portion, and the front and rear peripheral portions where the bottom surface of the heat insulating wall is lowest. Since the drainage port is formed, the defrost water from the cooler can be smoothly guided to the front and rear drainage ports by the inclination of the bottom surface of the heat insulating wall and processed.

  According to the invention of claim 12, in addition to each of the above inventions, a machine room configured below the heat insulation wall, an exterior panel constituting the outer surface of the heat insulation wall, and an exterior panel corner angle on the opening side before and after the display room Angle material provided on the upper and lower sides of the part, front and back on each angle material, a rigid body that receives the load of the article in the display room, and an angle through the exterior panel located at the left and right ends of the machine room Since it has leg members that support the left and right ends of the material, the rigidity of the entire open showcase including the heat insulation wall can be secured without reducing the volume of the machine room, and installation of equipment and piping in the machine room Becomes easy.

  According to invention of Claim 13, in addition to said each invention, a heat insulation wall is attached to the 1st heat insulation wall material which the upper surface and the right-and-left end opened, and one side of this 1st heat insulation wall material, A display chamber Since it is comprised from the 2nd heat insulation wall material which comprises the opening lower edge of one side, the shape of the 1st heat insulation wall material is simplified, and the 2nd heat insulation wall material is made into a free curved shape etc., for example It becomes possible to improve productivity and reduce costs.

  According to the invention of claim 14, in addition to each of the above inventions, the curved corner cap provided at the corner portion where the cold air suction port of the opening on the front and rear surfaces of the display chamber intersects the cold air suction port of the side surface opening is provided. This corner cap is formed in a continuous shape of four pieces, so that the workability of the corner cap is improved by dividing the four continuous shapes into four pieces. As a result, the cost of parts can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is a perspective view of an open showcase 1 according to an embodiment to which the present invention is applied, FIG. 2 is a rear view of the open showcase 1, FIG. 3 is a plan view of the open showcase 1, and FIG. 5 is a perspective view of the open showcase 1, FIG. 6 is a front view of the open showcase 1, and FIG. 7 is an enlarged vertical side view of the open showcase 1.

  The open showcase 1 is a showcase that is installed in a store such as a supermarket or a convenience store for selling beverages and foods while cooling them. In addition, a display chamber 8 having three openings is formed by the openings 4, 6, and 7 on the front and rear surfaces and one side surface (right side surface). Further, the corner portion of the side opening 7 has a curved shape, and the other side surface (left side surface) of the display chamber 8 is closed by the side plate 9.

  In the center of the display chamber 8, an internal hollow duct member 11 extends vertically from the side plate 9 to the front side of the side opening 7 on one side (position on the side of the side opening 7 on the back side of the display chamber 8). It is configured. The duct member 11 includes a back plate 12 serving as a back surface of the display chamber 8 on the front opening 4 side, a back plate 13 serving as a back surface of the display chamber 8 on the rear opening 6 side, and a back surface of the display chamber 8 on the side opening 7 side. And the back plate 14.

  In addition, deck pans 16, 17 and 18 are detachably attached to the bottom surface of the display chamber 8 above the bottom surface 2 </ b> A of the heat insulating wall 2, and the deck pan 16 is attached to the display chamber 8 on the front opening 4 side. The deck pan 17 corresponds to the display chamber 8 on the rear opening 6 side, and the deck pan 18 corresponds to the display chamber 8 on the side opening 7 side. And the said duct member 11 is comprised by the dimension from this deck pan 16-18 to the top wall 3, and lower part 12A, 13A, 14A of each backplate 12,13,14 is made detachable.

  A continuous cold air duct 21 is formed in the duct member 11 and the top wall 3 from between the deck pans 16 to 18 and the bottom surface 2A of the heat insulating wall 2. Front cold air discharge port 32, rear cold air discharge port 33, side cold air discharge port 34 and front cold air intake port 36 formed at the upper and lower edges of front opening 4, rear surface opening 6 and side surface opening 7, respectively, rear cold air intake It communicates with the mouth 37 and the side cold air inlet 38.

  Further, shelf columns 41 and 41 are attached to both sides of the back plates 12 and 13 of the duct member 11 in the vertical direction, and the shelf columns 41 and 41 are made of a transparent plate material (glass or hard resin). A plurality of shelves 43... For displaying merchandise are installed. In this case, the shelves 43 of each stage are provided from the display chamber 8 on the front opening 4 side through the display chamber 8 on the side opening 7 side to the display chamber 8 on the rear opening 6 side.

  And while the cooler 44 which comprises the refrigerant circuit of a cooling device is installed in the cool air duct 21 on the bottom face 2A of the heat insulation wall 2 under the display room 8, the inside of this cooler 44 (each cool air inlet 36-) First and second blowers 46 and 47 constituting a blower device are installed in the central portion in the front-rear direction of the heat insulating wall 2 in the cold air duct 21 on the opposite side of the heat sink 38 and the cooler 44. In this case, the fans 46 and 47 are provided in the fan cases 48 and 49, respectively.

  A machine room 51 is formed below the heat insulating wall 2. The machine room 51 includes a compressor 52, a condenser 53, and a condenser blower 54 that form a refrigerant circuit of the cooling device together with the cooler 44. Etc. are installed. Reference numeral 56 denotes a panel having vent holes provided on the front and rear surfaces and side surfaces of the machine room 51.

  Note that an exhaust duct 58 is formed in an internal hollow exhaust duct member 57 extending vertically on the side plate 9 side of the duct member 11. The lower end of the exhaust duct 58 opens into the machine room 51 (FIG. 9), and the upper end opens at the top surface of the top wall 3. Further, the exhaust duct member 57 is provided in heat exchange with the side plate 9. Here, waste heat is generated from the compressor 51 and the condenser 53, and the condenser blower 54 is operated to suck outside air from the front panel 56 and exhaust it from the rear and side panels 56. The portion passes through the exhaust duct 58 and is discharged above the top wall 3 (broken line arrow in FIG. 9).

  As a result, it is possible to suppress the inconvenience that the exhaust from the open showcase 1 adversely affects other devices such as other open showcases installed facing the open showcase 1. Further, the exhaust duct member 57 itself also rises in temperature due to the passage of the high temperature exhaust gas, but this heat is transmitted to the side plate 9. Thereby, the dew condensation on the side plate 9 is also suppressed or eliminated.

  The cooler 44 includes a refrigerant pipe (not shown) and a plurality of heat exchanging fins 44F attached to the heat exchanger, and as a whole, as shown in a perspective view of FIG. Alternatively, the display chamber 8 is provided from the front opening 4 side to the rear opening 6 through the side opening 7 side. That is, the cooler 44 is disposed in a manner corresponding to the front opening 4, the rear opening 6, and the side opening 7 of the display chamber 8.

  The refrigerant piping of the cooler 44 extends from the front opening 4 side of the display chamber 8 to the rear opening 6 side through the side opening 7 side, and further returns from the rear opening 6 side to the front opening 4 side through the side opening 7 side. Thus, the refrigerant is configured to flow while detouring from the front opening 4 side of the display chamber 8 through the side opening 7 side to the rear opening 6 side.

  On the other hand, one side (right side) of the back plates 12 and 13 is bent obliquely in the front-rear direction and continues to the back plate 14 on the side as it is. A partition plate 61 is provided from the bottom surface 2A of the heat insulating wall 2 to the bottom surface of the top wall 3 between the back plates 12 and 13 at a position corresponding to the bent portion. Are divided into the openings 4 and 6 side and the side opening 7 side (FIG. 6. Note that the cooler 44 is not shown in this figure). In addition, a cold air interference plate 62 is horizontally attached to the lower part between the rear plates 12 and 13 on the side plate 9 side of the partition plate 61, thereby forming a high-pressure chamber on the discharge side above the blower 46. Further, a partition plate 63 is provided between the back plates 12 and 13 above the cold air interference plate 62 so as to extend vertically, and the inside of the cold air duct 21 above the cold air interference plate 62 is connected to the front opening 4 side and the rear opening 6 side. It is divided into.

  Further, the upper end portion of the cold air duct 21 on the side opening 7 side of the partition plate 61 is partitioned by partition plates 66 to 70 provided in the top wall 3. The partition plates 66 to 70 are provided radially toward the end portions of the side cold air discharge port 34 and the front cold air discharge port 32 and the rear cold air discharge port 33 that are continuous in front and rear thereof, and these cold air discharge ports 34, 32, 33. It plays a role of distributing cold air (indicated by arrows in FIG. 8).

  The blower 46 is installed on the side plate 9 side of the partition plate 61, and the blower 47 is installed on the side opening 7 side of the partition plate 61. When each of the blowers 46 and 47 is operated, it draws in cold air from the surroundings and discharges it upward. At this time, when the deck pans 16 and 17 are removed and the lower portions 12A and 13A of the back plates 12 and 13 are removed, the cooler 44 and the blower 46 of the portions are exposed. Further, when the deck pan 18 is removed and the lower portion 14A of the back plate 14 is removed, the cooler 44 and the blower 47 of that portion are exposed. Thereby, if the fan cases 48 and 49 are opened, replacement | exchange and maintenance of the air blowers 46 and 47, cleaning of the cooler 44, etc. can be performed.

  With such a configuration, when the compressor 52 is operated, the high-temperature and high-pressure gas refrigerant discharged from the compressor 52 dissipates heat by the condenser 53, condenses, is decompressed by a decompression device (not shown), and then cooled by the cooler 44. Into the refrigerant pipe. Then, the refrigerant evaporates while flowing in the refrigerant pipe, and at that time exhibits a cooling action.

  At this time, as described above, the cooler 44 is disposed so as to correspond to the front opening 4, the rear opening 6, and the side opening 7 of the display chamber 8. By passing through the opening 7 side to the rear opening 6 side and further returning from the rear opening 6 side to the front opening 4 side through the side opening 7 side, the refrigerant is detoured. It passes through the side opening 7 side to the rear opening 6 side, and is configured to flow while detouring. Therefore, the cooling action by the cooler 44 occurs substantially evenly in the portions corresponding to the front opening 4, the rear opening 6 and the side opening 7 of the display chamber 8.

  When the blowers 46 and 47 are operated, the air sucked into the cold air duct 21 from the front and rear cold air suction ports 36 and 37 exchanges heat with the fins 44F corresponding to those of the cooler 44. Then, the air is cooled and sucked into the blower 46 as cold air. And although it discharges upwards, since the cold air interference plate 62 exists in the upper part, it becomes a form in which the cold air is kept low, and the pressure rises to become a high pressure chamber. Then, the cold air that has passed through the cold interference plate 62 divides and rises before and after the partition plate 63 on the side plate 9 side of the partition plate 61, passes through the top wall 3, and passes from the front and rear cool air discharge ports 32 and 33 to the openings 4 and 6. It is discharged toward.

  By configuring the high-pressure chamber in this manner and separating the front and rear by the partition plate 63, the cold air is uniformly discharged from the front opening 4 side and the rear opening 6 side. And after the cool air constitutes an air curtain in the opening, it repeats circulation that is sucked into the cool air duct 21 from the cool air suction ports 36 and 37 on the front and rear surfaces.

  On the other hand, the air sucked into the cold air duct 21 from the cold air inlet 38 on the side surface is cooled by exchanging heat with the fins 44F of the cooler 44 corresponding to the air, and is sucked into the blower 47 as cold air. Then, it is discharged upward, rises in the cold air duct 21 on the side opening 7 side of the partition plate 61, and enters the top wall 3. Therefore, the cold air is distributed radially by the partition plates 66 to 70, and the opening 7 and the openings 4 before and after the side cold air discharge port 34 and the front cold air discharge port 32 and the rear cold air discharge port 33 that are continuous in front and rear thereof. It discharges toward the six ends.

  Thus, by distributing the cool air by the partition plates 66 to 70, the cool air is uniformly discharged from the side cool air discharge port 34 and the end portions of the front cool air discharge port 32 and the rear cool air discharge port 33 which are continuous in front and rear thereof. become. Then, after the cold air constitutes an air curtain in the opening 7, the cold air is repeatedly circulated through the cold air duct 21 from the side cold air suction port 38.

  As described above, the cooler 44 is arranged corresponding to the front, rear, and side openings 4, 6, and 7 of the display chamber 8, and the refrigerant flows while bypassing the portions corresponding to the openings. Thus, the temperature of the cool air discharged from the upper edges of the front, rear and side openings 4, 6, and 7 of the display chamber 8 can be made substantially uniform. As a result, the temperature in the display chamber 8 with the front and rear surfaces and one side surface opened can be made uniform.

  Further, since the blowers 46 and 47 are arranged in the cool air duct 21 inside the cooler 44, the cool air that converges from the outside to the inside of the cooler 44 arranged corresponding to each of the openings 4, 6, and 7. It becomes possible to create a flow, and it is possible to simplify the blower and the duct structure.

  In particular, a high pressure chamber is formed in the cold air duct 21, and a partition plate 63 for distributing the cold air passing through the high pressure chamber to the cold air discharge ports 32 and 33 on the front and rear surfaces of the display chamber 8 is provided in the cold air duct 21. Therefore, it becomes possible to discharge the cold air more uniformly from the cold air discharge ports 32 and 33 on the front and rear surfaces of the display chamber 8 to cool the display chamber 8 more uniformly. Moreover, since the partition plates 66 to 70 distribute the cold toward substantially the entire area of the side cold air discharge port 34 of the display chamber 8, the cool air rising up the cold air duct 21 in the duct member 11 in the central portion of the display chamber 8 is removed. Further, it becomes possible to discharge more uniformly toward the side opening 7 of the display chamber 8, and the cooling effect in the display chamber 8 on the side opening 7 side can be remarkably improved.

  Here, since the entire periphery of the side opening 7 side of the display chamber 8 is open, the cooling load inevitably increases. Therefore, the blower 57 is controlled at a lower rotational speed than the blower 56, and the heat exchange time between the cooler 44 and the cool air is lengthened to increase the cooling effect in the display chamber 8 on the side opening 7 side. Thus, the first blower 56 for discharging the cool air from the cool air discharge ports 32 and 33 on the front and rear surfaces of the display chamber 8 and the cool air from the side cool air discharge port 34 of the display chamber 8 are used. The second blower 57 is configured to adjust the operation of each blower 56, 57, so that the cooling effect in the display chamber 8 on the front and rear openings 4, 6 side and in the display chamber 8 on the side opening 7 side is achieved. It is possible to further uniformly cool the entire area of the display chamber 8 by adjusting.

  Here, the bottom surface 2A of the heat insulating wall 2 is formed as an inclined surface having a high central portion in the front-rear direction (lower side of the fans 46, 47) and gradually lowering toward the front and rear peripheral portions as shown in FIG. . Further, drainage ports 71 and 72 are formed in the peripheral portions before and after the bottom surface 2A is lowest. The drain ports 71 and 72 pass through the heat insulating wall 2 and face the machine room 51, where they are connected to drain hoses 73 and 74, respectively. The drain hoses 73 and 74 are connected to both ends of a connecting pipe 76, and the connecting pipe 76 is connected to a drain hose 77.

  Since the chill is generated in the cooler 44 by the cooling action described above, the cooler 44 is periodically defrosted. The defrosted water generated at the time of defrosting and the water dropped from the display chamber 8 (referred to as drain water) are dripped onto the bottom surface 2A of the heat insulating wall 2 and flow in either the front or rear direction due to the inclination thereof. Into the drains 71 and 72, respectively. The drain water that has flowed into the drain ports 71 and 72 flows through the drain hoses 73 and 74, joins at the connecting pipe 76, and is finally discharged from the drain hose 77.

  Accordingly, drain water such as defrost water from the cooler 44 can be smoothly guided to the front and rear drain ports 71 and 72 by the inclination of the bottom surface 2A of the heat insulating wall 2 and processed. In this case, the connecting pipe 76 is provided in the machine chamber 51 so as to be deviated forward from the center in the front-rear direction of the heat insulating wall 2. That is, the drain hose 74 is longer than the drain hose 73. Thereby, when clogging occurs in the connecting pipe 76, the front panel 56 can be opened for easy cleaning.

  Further, the lower surface of the cooler 44 has an inclined shape substantially matching the inclination of the bottom surface 2A of the heat insulating wall 2, and its upper surface is horizontal (FIG. 10). As a result, the cooler 44 is stably installed on the bottom surface 2A of the heat insulation wall 2 and does not interfere with the upper deck pans 16 to 18 and other components.

  Next, FIG. 11 is an internal perspective view of the heat insulating wall 2 showing the reinforcing structure of the open showcase 1. In this figure, 78 is an exterior panel constituting the outer surface of the heat insulating wall 2 (the outer surface of the first heat insulating wall member 81 described later, ie, the front and rear surfaces and the lower surface), and the upper surface and the left and right surfaces are open. As will be described later in detail with reference to FIG. 13, the heat insulating wall 2 has a first heat insulating wall member 81 whose upper surface and left and right ends are open, and one side of the first heat insulating wall member 81 (on the right side in the embodiment). The first heat insulating wall material 81 is formed by foaming and filling a heat insulating material between the exterior panel 78 and an interior panel (not shown).

  In this case, angle members 83 and 83 having an L-shaped cross section are provided on the upper surfaces (inside the heat insulating material) of the front and rear corners of the exterior panel 78. Further, rigid bodies 84, 84 made of, for example, wood are provided at positions corresponding to the lower side of the shelf columns 41, 41, respectively. The upper surfaces of the rigid bodies 84, 84 have a mountain shape in order to make the inclination of the bottom surface 2A of the heat insulating wall 2 described above, but the front and back thereof are held on the angle members 83, 83 (in the heat insulating material). Each rigid body 84, 84 receives the load of the shelf 43 in the display chamber 8 and the merchandise displayed thereon via the shelf columns 41, 41.

  On the other hand, leg members 86, 86 are provided at the left and right end portions of the exterior panel 78 so as to be located at the left and right end portions in the machine room 51, and the leg members 86, 86 are provided via the exterior panel 78. The left and right ends of the angle members 83, 83 are supported. Further, a reinforcing member 87 is attached to the lower surface of the exterior panel 78 corresponding to the lower side of the rigid body 84 located at the center of the machine room 51.

  In this manner, the outer panel 78 constituting the outer surface of the first heat insulating wall member 81 of the heat insulating wall 2 and the upper surface of the corner portion of the outer panel 78 on the opening side before and after the display chamber 8 are provided to the left and right. Angle members 83, 83, front and rear sides are held on each angle member 83, 83, and rigid bodies 84, 84 that receive loads of goods such as merchandise and shelves 43 in the display chamber 8, and left and right ends in the machine chamber 51 Since the leg members 86 and 86 that are positioned and support the left and right ends of the angle members 84 and 84 via the exterior panel 78 are provided, the reinforcing structure of the open showcase 1 protruding into the machine room 51 can be reduced as much as possible. . Thereby, the rigidity of the entire open showcase 1 including the heat insulating wall 2 can be ensured without reducing the volume of the machine room, and equipment and piping in the machine room 51 can be easily attached.

  Further, as described above, the heat insulating wall 2 has the first heat insulating wall member 81 whose upper surface and left and right ends are opened, and the right side in the embodiment of the first heat insulating wall member 81, that is, the side opening 7 of the display chamber 8. It is comprised from the 2nd heat insulation wall material 82 attached to the side (FIG. 13). The second heat insulating wall member 82 constitutes the lower edge of the side opening 7 of the display chamber 8, and the corner portion of the second heat insulating wall member 82 has the above-described curved shape, and is attached by a mounting plate 88. It attaches to the 1 heat insulation wall material 81 so that attachment or detachment is possible.

  In this way, the heat insulating wall 2 is attached to the first heat insulating wall member 81 whose upper surface and left and right ends are open, and one side of the first heat insulating wall member 81, and constitutes an opening lower edge on one side of the display chamber 8. Therefore, the shape of the first heat insulating wall member 81 can be simplified, and the second heat insulating wall member 82 can be free, for example, a curved shape as in the embodiment. become able to. In the embodiment, the side plate 9 is attached to the left side. However, when the side plate 9 is attached to the right side, the second heat insulating wall member 82 may be attached to the left side of the heat insulating wall 1 toward the heat insulating wall member 81. . As a result, productivity can be improved and costs can be reduced.

  Next, FIG. 14 shows a corner cap 91 that constitutes a cold air inlet. The corner cap 91 is provided at a corner where the front and rear cool air inlets 36 and 37 and the side cold air inlet 38 intersect, and the curved shape of the first heat insulating wall member 82 of the heat insulating wall 2 described above. It exhibits a curved shape along.

  In this case, the corner cap 91 is made of a stainless steel plate, and a plurality of through holes 92 serving as cold air inlets are formed. When manufacturing such a corner cap 91, as shown in FIG. 15, the stainless steel plate is press-molded in a shape in which the four corner caps 91 are continuous so that the curved portions are outside (four corners in the embodiment). It cuts into four by the line shown with the dashed-dotted line of FIG. 15, and isolate | separates. As described above, by dividing and using the four molded pieces in a continuous shape, the workability of the corner cap 91 can be improved, and the part cost can be reduced.

  Next, FIG. 16 shows another embodiment of the present invention. In this figure, the same reference numerals as those in FIG. 5 indicate the same or similar functions. In this case, in the cooler 44, the fins 44F corresponding to the corners formed by the openings 4 and 6 on the front and rear surfaces of the display chamber 8 and the side openings 7 are deleted within a predetermined range. Each deletion location is indicated by 44D. Moreover, in this figure, 44P is the refrigerant | coolant piping mentioned above. The deleted portions 44D and 44D are closed with a control plate 93 having a plurality of through holes.

  Thus, by removing the fins 44F of the cooler 44 corresponding to the corners formed by the openings 4 and 6 on the front and rear surfaces of the display chamber 8 and the side openings 7, the front and rear surfaces where the cooling effect becomes the worst. The cool air circulation in the display chamber 8 at the corner formed by the openings 4 and 6 and the side surface openings 7 can be improved, and the cool air circulation can be smoothed to improve the cooling capacity. In particular, since the control plate 93 is provided at the deleted portion 44D, the control plate 93 restricts the cold air flow. That is, the cooling effect in the display chamber 8 at the corner formed by the front and rear openings 4 and 6 and the side openings 7 can be adjusted by the control plate 93 to make the temperature in the display chamber 8 more uniform. It becomes possible.

It is a perspective view of the open showcase of one Example to which this invention is applied. It is a rear view of the open showcase of FIG. It is a top view of the open showcase of FIG. It is a vertical side view of the open showcase of FIG. It is a see-through | perspective perspective view of the open showcase of FIG. It is a vertical front view of the open showcase of FIG. It is an expansion vertical side view of the open showcase of FIG. It is a top view of the cold air duct in the top wall of the open showcase of FIG. It is an expanded sectional view of the lower end part of the exhaust duct of the open showcase of FIG. It is a vertical side view of the heat insulation wall of the open showcase of FIG. It is a see-through | perspective perspective view which shows the reinforcement structure of the open showcase of FIG. It is a side view which shows the reinforcement structure of the open showcase of FIG. It is a disassembled perspective view of the heat insulation wall of the open showcase of FIG. It is a perspective view of the corner cap of the open showcase of FIG. It is a top view of the state before a cutting | disconnection at the time of shaping | molding of the corner cap of FIG. It is a see-through | perspective perspective view of the open showcase of the other Example to which this invention is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Open showcase 2 Heat insulation wall 2A Bottom surface 3 Top wall 4 Front opening 6 Rear surface opening 7 Side surface opening 8 Display chamber 9 Side plate 11 Duct member 12, 13, 14 Back surface plate 12A, 13A, 14A Lower part 16, 17, 18 Deck pan 21 Cold air Duct 32 to 34 Cold air discharge port 36 to 38 Cold air suction port 44 Cooler 44F Fin 46 and 47 Blower 51 Machine room 58 Exhaust duct 63 and 66 to 70 Partition plate 71 and 72 Drain port 78 Exterior panel 81 and 82 Thermal insulation wall material 83 Angle material 84 Rigid body 86 Leg material 91 Corner cap 93 Control plate

Claims (14)

In an open showcase in which the front and rear surfaces and one side surface of the display room configured above the heat insulating wall are opened,
A cold air discharge port and a cold air suction port respectively formed on the opening upper edge and opening lower edge of the front and rear surfaces and side surfaces of the display chamber;
A cold air duct configured to extend upward from a bottom surface of the heat insulating wall below the display chamber through a central portion of the display chamber, and communicated with the cold air discharge port and the cold air suction port;
A cooler disposed in the cold air duct below the display room;
A blower for sucking cold air that has been sucked into the cold air duct from the cold air inlet and exchanged heat with the cooler from the cold air outlet through the cold air duct;
An open showcase characterized in that the cooler is arranged corresponding to the front and rear and side openings of the display chamber, and the refrigerant flows while bypassing the portions corresponding to the openings. .   The cooler includes a refrigerant pipe through which a refrigerant flows and a plurality of heat exchange fins provided in the refrigerant pipe in a heat exchange manner, and a corner portion formed by an opening on the front and rear surfaces and an opening on a side surface of the display chamber. The open showcase according to claim 1, wherein the fin corresponding to the portion is deleted.   3. The open showcase according to claim 2, wherein a control plate for controlling cool air flow is provided at a location where the fins are removed from the cooler.   4. The open show according to claim 1, wherein the blower is disposed in the cold air duct inside the cooler disposed corresponding to each opening of the display chamber. 5. Case.   A first blower for causing the blower to discharge cold air from the cold air outlet of the opening on the front and rear surfaces of the display chamber, and for discharging cold air from the cold air outlet of the opening on the side of the display chamber The open showcase according to claim 4, wherein the open showcase comprises a second blower.   The machine room configured below the heat insulating wall and an exhaust duct extending from the machine room to the upper part of the display room are provided. The open showcase according to claim 5.   The open showcase according to claim 6, further comprising a side plate that closes the other side surface of the display chamber, wherein the exhaust duct is configured to exchange heat with the side plate.   The cooling device includes a back plate that internally forms a cold air duct in the center of the display room, and a deck pan that forms the bottom surface of the display room. The lower part of the back plate and the deck pan are detachable, and the blower device is in a detached state. The open showcase according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 6, or claim 7.   A high pressure chamber is formed in a cold air duct in the central portion of the display chamber on the discharge side of the blower, and a partition plate for distributing the cold air having passed through the high pressure chamber to the cold air discharge ports of the openings of the display chamber is provided in the cold air. The open showcase according to claim 1, 2, 3, 4, 5, 6, 7, or 8, wherein the open showcase is provided in a duct.   The open showcase according to claim 9, wherein the partition plate distributes the cool air toward a substantially entire area of the cool air discharge port of the opening on the side surface of the display chamber.   The bottom surface of the heat insulating wall is formed as a slanted surface having a high central portion and a low inclined surface toward the peripheral portion, and drainage ports are respectively formed in the front and rear peripheral portions where the bottom surface of the heat insulating wall is lowest. The open showcase according to claim 2, claim 3, claim 4, claim 5, claim 6, claim 7, claim 8, claim 9, or claim 10.   The machine room formed below the heat insulating wall, the exterior panel constituting the outer surface of the heat insulating wall, and the angle provided on the upper surface of the exterior panel corner portion on the opening side before and after the display room over the left and right Material, a rigid body that is held front and back on the angle material, receives a load of an article in the display chamber, and a leg that is positioned at the left and right ends of the machine chamber and supports the left and right ends of the angle material through the exterior panel 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 10. The open showcase of claim 11.   The heat insulating wall is attached to one side of the first heat insulating wall member and the first heat insulating wall member having an upper surface and left and right ends opened, and a second heat insulating member constituting an opening lower edge on one side of the display chamber. It is comprised from wall material, Claim 1, Claim 2, Claim 3, Claim 4, Claim 5, Claim 6, Claim 8, Claim 9, It is characterized by the above-mentioned. The open showcase according to claim 10, claim 11 or claim 12.   A curved corner cap provided at a corner portion where the cold air suction port on the front and rear surfaces of the display chamber and the cold air suction port on the side surface intersect with each other is formed, and the corner caps are formed in four continuous shapes. Claim 1, Claim 2, Claim 3, Claim 4, Claim 5, Claim 6, Claim 7, Claim 8, Claim 9, Claim 10, and Claim 11 An open showcase according to claim 12 or claim 13.

Images