JP5979480B2 - Open showcase - Google Patents

Description

  The present invention relates to an open showcase in which a cold air curtain is formed in a front opening of a heat insulating wall, and a plurality of shelves are installed in a display room configured in the heat insulating wall.

  Conventionally, in this kind of open showcase, the inside of a heat insulating wall having a substantially U-shaped cross section that opens to the front is partitioned by a partition plate, the front side of this partition plate is a display chamber, and the rear side is a duct. In addition, a plurality of shelves for displaying merchandise are installed in the display room, and a cooler and a blower are installed in the duct. By discharging from the outlet and sucking from the cold air suction port at the lower edge of the opening, a product is circulated in the display room to cool the commodity on each shelf while forming a cold air curtain in the opening.

  In such an open showcase, the front area of one of the shelves on the shelf is closed with a door so that it can be freely opened and closed. A device that can be cooled locally to a temperature lower than that in the room has been developed (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 58-72865

  However, in the configuration shown in the conventional patent document, the structure of the door itself is complicated, and the door receiving frame is attached to the air curtain suction grille in order to remove the cold air blown to the area on the shelf behind the door. As a result, there is a problem that the shape of the air curtain suction grill must be changed to a different one from the conventional one.

  The present invention has been made to solve the conventional technical problem, and an object of the present invention is to provide an open showcase capable of locally cooling an area on a shelf to a low temperature with a simple configuration. And

In order to solve the above-mentioned problems, the open showcase of the present invention forms a display chamber and a duct by partitioning the inside of a heat insulating wall opened on the front surface with a partition plate, and a cooler and a heat exchanger arranged in the duct. The cool air accelerated by the blower is discharged from the cold air outlet at the upper edge of the opening and sucked from the cold air inlet at the lower edge of the opening to form a cold air curtain in the opening. A blower formed on a plurality of shelves erected, an openable / closable door device mounted between the shelf and a shelf positioned above the shelf, and a partition plate located behind the door device. A cold air outlet that blows out the cold air accelerated at, and a cold air outlet formed between the door device and the lower shelf to which the door device is attached, and the door device is attached to the lower shelf Lower rail and upper shelf It consists of an upper rail that is attached and a sliding door type transparent door plate that is movably fitted between these rails. The lower rail is attached to the shelf via a spacer that is partially provided. The space between the lower rail and the shelf constituted by the cooling air outflow portion, the height of the spacer can be changed, the cold air blown out from the cold air outlet flows out from the cold air outflow portion, It is sucked into the cold air inlet.

The open showcase of the invention of claim 2 is characterized in that, in the above invention, the door plate is formed with a vent hole.

The open showcase of the invention of claim 3 is characterized in that the lower rail and the upper rail are detachably attached to the shelf in the invention of claim 1 or claim 2 .

According to a fourth aspect of the present invention, there is provided an open showcase according to any one of the first to third aspects, wherein a plurality of through holes are formed in the lower rail.

An open showcase according to a fifth aspect of the present invention is characterized in that, in any of the first to fourth aspects, the door device is a self-closing door.

The open showcase of the invention of claim 6 is characterized in that, in the above invention, the lower rail is inclined low in the direction in which the door plate is closed.

  According to the present invention, the display room and the duct are formed by partitioning the inside of the heat insulating wall opened on the front surface with the partition plate, and heat is exchanged with the cooler disposed in the duct, and the cool air accelerated by the blower is provided. In an open showcase in which a cold air curtain is formed in the opening by discharging from the cold air outlet on the upper edge of the opening and sucking in from the cold air inlet on the lower edge of the opening, a plurality of shelves installed in the display chamber, A cool air blower that blows out cool air that is formed on a door device that is openable and closable installed between a shelf and a shelf located above the shelf and a partition plate that is located behind the door device and accelerated by a blower. It has a cold air outlet formed between the outlet, the door device and the lower shelf to which the door device is attached, and the cold air blown out from the cold air outlet flows out of the cold air outlet and sucks cold air To be sucked into the mouth Therefore, it is possible to prevent dust from entering the area on the shelf by the door device, and to blow out cold air from the cold air outlet to the area on the shelf closed by the door device and let it flow out from the cold air outlet. The cool air can be smoothly circulated, and the region can be locally cooled to a low temperature.

  In this case, since the cold air outflow part is formed between the door device and the lower shelf to which the door device is attached, there is no need to change the cold air suction port as in the prior art, and the structure can be simplified. Will be able to. Moreover, since it can be realized without changing the structure of the existing open showcase, it is rich in versatility.

Also, the door device, and a lower rail attached to the underside of the shelf that, an upper rail attached to a shelf located above the transparent door panel of the sliding door type fitted to be movable between these rails It is attached to the shelf via a spacer that is partially provided with a lower rail, and the space between the lower rail and the shelf that is configured with this spacer is used as a cool air outflow part, further simplifying the structure Can be planned.

  In particular, since the height of the spacer can be changed, the height of the spacer can be adjusted even when the shelf position is changed and the distance between the lower shelf and the upper shelf changes. Thus, it is not necessary to prepare a plurality of door plates having different dimensions.

Further, if the vent hole is formed in the door plate as in the invention of claim 2 , the cold air blown to the region on the shelf can be more smoothly discharged from the vent hole of the door plate. When it is not possible to ensure a large cool air passage area of the cool air outflow portion between the apparatus and the shelf, the cool air can smoothly flow out from the vent of the door plate.

Further, if the lower rail and the upper rail are detachably attached to the shelf as in the invention of claim 3 , local cooling is unnecessary and the door device is not used, or the door device is attached to the shelf at a different position. When moving, it can be easily removed or moved, and the convenience can be significantly improved.

Further, if a plurality of through holes are formed in the lower rail as in the invention of claim 4 , the dew condensation water adhering to the door plate and flowing down can be smoothly discharged from the through holes, and Removal of accumulated dust is also prepared.

Further, if the door device is a self-closing door as in the invention of claim 5 , it is possible to eliminate the inconvenience of leaving the door plate open by a customer or the like. In this case, the lower rail is inclined low in the direction in which the door plate closes as in the invention of claim 6 so that the door plate can be closed by its own weight, and the structure can be simplified. .

It is a vertical side view of the open showcase of the Example to which this invention is applied. It is an enlarged vertical side view of the lower part of the open showcase of FIG. FIG. 3 is an enlarged vertical side view of the lower part of the door device of the open showcase of FIG. 2.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The open showcase 1 according to the embodiment is installed in a store such as a supermarket or a convenience store, and displays and sells products while cooling the product. The main body is composed of side plates (not shown) attached to the left and right of the wall 2.

  A steel plate partition plate (interior rear) 4 is attached to the inside of the heat insulation wall 2 with a gap, and a steel plate top plate 6 is placed on the inside of the heat insulation wall 2 at the upper end of the partition plate 4. Attached. Further, a lowermost shelf 7A made of a steel plate called a deck pan is attached to the lower end of the partition plate 4 with a space from the heat insulating wall 2, and the inside of the partition plate 4, the top plate 6 and the shelf 7A. Is a display chamber 8 that opens to the front, and a series of ducts 9 are formed between the display chamber 8 and the heat insulating wall 2.

  A cold air discharge port 11 is formed at the upper edge of the front opening of the heat insulation wall 2, and a cold air suction port 12 is formed at the lower edge of the heat insulation wall 2, which communicate with the duct 9. A cooler 13 constituting a refrigeration cycle of the cooling device is vertically installed in the duct 9 on the lower rear side of the partition plate 4, and a blower 14 is installed in the duct 9 below the shelf 7A. ing. The cooler 13 is supplied with a refrigerant from a refrigerator (not shown) and exhibits a cooling action.

  In the display chamber 8 on the front side of the partition plate 4, a plurality of steel plate shelves 7 are installed. Each shelf 7 is attached to a column (not shown) on the left and right of the partition plate 4 via brackets 16 so that the vertical position can be changed.

  In the embodiment, the door device 17 is attached to the front end portion of the lowermost shelf 7A (deck pan) and the front end portion of the shelf 7 (the sixth shelf from the top) located above, The front of the area 8A on the shelf 7A is closed so as to be freely opened and closed. The door device 17 according to the embodiment includes a lower rail 18, an upper rail 19, and two sliding door-type transparent door plates 21 and 21 that are movably fitted between them.

  In this case, the upper rail 19 is detachably attached to the front end portion of the shelf 7 with screws. On the other hand, the lower rail 18 is detachably attached to the shelf 7A by the magnetic force of spacers 22A and 22B made of magnets partially interposed between the shelf 7A. In the embodiment, the two spacers 22A and 22B are overlapped and used, but the number of the spacers can be changed as appropriate. That is, when the position of the shelf 7 above the shelf 7A is changed and the interval between the shelf 7A and the bottom shelf 7A is changed, the number of the spacers 22A and 22B is increased or decreased to reduce the whole. The height dimension is changed so that the change in the interval between the shelves 7 and 7A can be absorbed.

  And in the part which these spacers 22A and 22B do not exist, the cool air outflow part 23 for those height dimensions is comprised between the lower rail 18 and the shelf 7A. The cold air outlet 23 is located immediately after the cold air inlet 23.

  A plurality of through holes 24 are formed in the lower rail 18. Further, the lower rail 18 is inclined low in the direction in which the door plates 21 and 21 are closed. That is, the front rail groove 18A is low on the left side (the lowest portion of the rail groove 18A is indicated by 18AL), and the rear rail groove 18B is inclined low on the right side and is fitted in the rail groove 18A. The front door plate 21 is located on the left side and the rear door plate 21 fitted in the rail groove 18B is located on the right side and closes the front of the region 8A on the shelf 7A. Thereby, since each door plate 21 and 21 comes to slide in the direction which closes with its own weight from the open state, the door apparatus 17 turns into a self-closing door.

  Further, vent holes 26 are formed in the door plates 21 and 21, respectively. Further, the partition plate 4 located behind the door device 17 is formed with a cold air outlet 27 for blowing the cold air accelerated by the blower 14 and exchanging heat with the cooler 13 to the region 8A on the shelf 7A. In addition, cold air outlets 28 are also formed in the partition plate 4 corresponding to the back of the region on the shelves 7, 7 above.

  With the above configuration, when the blower 14 is operated, the cold air in the duct 9 that has exchanged heat with the cooler 13 is accelerated and blown up and discharged from the cold air discharge port 11 toward the opening of the display chamber 8. The cold air is formed in a cold air curtain at the front opening of the display chamber 8, and then is sucked from the cold air inlet 12 and repeatedly circulates back to the blower 14. Further, a part of the cold air coming out of the cooler 13 is also blown out into the display chamber 8 from the cold air outlets 27 and 28. The blown-out cold air and a part of the cold air curtain cool the inside of the display chamber 8.

  In particular, the cool air blown into the region 8A from the cold air outlet 27 circulates in the region 8A and is cooled. Since the front side of the region 8A is blocked by the door device 17, the temperature is locally lower than the other regions. Further, since the cold air outflow portion 23 is formed between the lower rail 18 and the shelf 7A, the cold air after circulating in the region 8A flows out from the cold air outflow portion 23 and is sucked into the cold air inlet 12. It will return to the air blower 14. The cool air also flows out toward the cool air inlet 12 from the upper part and both sides of the door device 17 and the gap between the door plates 21 and 21.

  Thus, by providing the door device 17, it becomes possible to prevent the intrusion of dust into the region 8 A on the shelf 7 A and to the region 8 A on the shelf 7 A closed by the door device 17. Cold air is blown out from the cold air outlet 27 and is allowed to flow out of the cold air outlet 23, whereby the cold air can be smoothly circulated and the region 8A can be locally cooled to a low temperature.

  In this case, since the cold air outflow portion 23 is formed between the door device 17 and the lower shelf 7A to which the door device 17 is attached, there is no need to change the shape of the cold air inlet 12, and the existing open showcase It can be realized with. Further, the lower rail 18 of the door device 17 is attached to the shelf 7A via spacers 22A and 22B partially provided, and the space between the lower rail 18 and the shelf 7A configured by the spacers 22A and 22B is set as a cool air outflow portion. Therefore, the structure can be further simplified.

  In particular, since the overall height dimension of the spacers 22A and 22B can be changed by increasing or decreasing the number of the spacers 22A and 22B, the position of the shelf 7 is changed so that the space between the lower shelf 7A and the upper shelf 7 is increased. Even if it changes, it becomes possible to cope by adjusting the height dimension of the spacers 22A and 22B together, and it is not necessary to prepare a plurality of door plates 21 having different dimensions.

  Further, since the vent hole 26 is formed in the door plate 21, the cold air blown to the region 8A on the shelf 7A can be discharged from the vent hole 26 of the door plate 21, and the shelves 7 and 7A. When the space between the door device 17 and the shelf 7A is relatively small and the cold air passage area 23 of the cold air outflow portion 23 cannot be secured large, the cold air can be smoothly discharged from the vent hole 26 of the door plate 21. It becomes like this.

  Moreover, since the lower rail 18 and the upper rail 19 are detachably attached to the shelves 7A and 7, local cooling is unnecessary and the door device 17 is not used, or the upper shelves 7 and 7 When the door device 17 is moved during this time, it can be easily removed or moved, and the convenience can be significantly improved.

  Further, since the lower rail 18 is formed with a plurality of through holes 24, the dew condensation water adhering to the door plate 21 and flowing down can be discharged smoothly from the through holes 24, and the lower rail 18 is provided. It is also possible to remove dust that accumulates on the surface.

  Furthermore, since the door device 17 is a self-closing door, it is possible to eliminate the inconvenience of leaving the door plates 21 and 21 open by a customer or the like. In this case, since the lower rail 18 is inclined low in the direction in which the door plates 21 and 21 are closed, the door plates 21 and 21 can be closed by their own weight, and the structure is simplified.

  In addition, although the door apparatus 17 was comprised with the sliding door type door in the Example, you may comprise with what is called a rotary door in addition to that in invention of Claim 1. Further, in the embodiment, the door device 17 is provided between the lowermost shelf 7A and the upper shelf 7, but not limited thereto, and between the upper shelves 7 and 7 (region where the cold air outlet 28 is located). It may be attached to the front).

  In the embodiment, the lower rail 18 is detachably attached by magnetic force, and the upper rail 19 is detachably attached by screws. However, the present invention is not limited thereto, and any magnetic force, both screws or fittings, are detachably attached to the shelves 7 and 7A. May be.

DESCRIPTION OF SYMBOLS 1 Open showcase 2 Heat insulation wall 4 Partition plate 7, 7A Shelf 8 Display room 8A Area 9 Duct 11 Cold air discharge port 12 Cold air suction port 13 Cooler 14 Blower 17 Door device 18 Lower rail 19 Upper rail 21 Door plate 22A, 22B Spacer 23 Cold air outflow part 24 Through hole 26 Vent 27, 28 Cold air outlet

Claims (6)

By partitioning the inside of the heat insulating wall opened on the front surface with a partition plate, a display chamber and a duct are formed, heat exchange is performed with a cooler disposed in the duct, and cool air accelerated by the blower is sent to the upper edge of the opening. In an open showcase that forms a cold air curtain in the opening by discharging from the cold air outlet and sucking from the cold air inlet at the lower edge of the opening,
A plurality of shelves erected in the display room;
An openable / closable door device mounted between the shelf and a shelf located above the shelf;
A cold air outlet that is formed in the partition plate located behind the door device and blows out the cold air accelerated by the blower;
A cold air outflow portion formed between the door device and the lower shelf to which the door device is attached;
The door device includes a lower rail attached to the shelf on the lower side thereof, an upper rail attached to the shelf located above, and a sliding door type transparent door plate movably fitted between the rails. The lower rail is attached to the shelf via a partially provided spacer, and the space between the lower rail and the shelf constituted by the spacer becomes the cold air outflow portion, and The height of the spacer can be changed.
The open showcase characterized in that the cold air blown out from the cold air outlet flows out from the cold air outlet and is sucked into the cold air inlet. The open showcase according to claim 1 , wherein a vent hole is formed in the door plate. The open showcase according to claim 1 or 2 , wherein the lower rail and the upper rail are detachably attached to the shelf. Open showcase according to any one of claims 1 to 3 to the lower rail, wherein a plurality of through holes are formed. The door device open showcase according to any one of claims 1 to 4, characterized in that it is self-closing. The open showcase according to claim 5 , wherein the lower rail is inclined low in a direction in which the door plate is closed.

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