JP2017110883A - Show case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a show case with a large exhibition chamber.SOLUTION: A show case includes: a body case 3; an exhibition chamber 8 for merchandise that is provided in the body case 3 and whose front face is opened; a back face duct 21 provided on a back face side of the exhibition chamber 8; a ceiling duct 20 provided at a ceiling on an upper side of the exhibition chamber 8, and connected to the back face duct 21; a lower duct 22 provided inside a deck pan 27 on a lower side of the exhibition chamber 8, and connected to the back face duct 21; a heat exchanger 30 arranged in the back face duct 21; and a fan 43 configured to circulate and guide cold air generated by heat exchange in the heat exchanger 30 through a cold air passage where the cold air circulates from the front face opening of the exhibition chamber 8 via the lower duct 22, the back face duct 21 and the ceiling duct 20 and returns to the lower duct 22 while forming a cold air curtain. The fan 43 is arranged in the back face duct 21 and above the heat exchanger 30.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a showcase in which a fan is provided in a cold air duct.

Conventionally, for example, in a showcase installed in a convenience store or a supermarket, a lower duct is provided inside a deck pan below the display room, and a rear duct connected to the lower duct is provided on the rear side of the display room. A ceiling duct connected to the rear duct is provided on the upper side of the display room.
In this type of showcase, a fan is provided inside the lower duct. This fan circulates and guides the cold air from the heat exchanger through the lower duct, back duct, and ceiling duct to the cool air passage that forms a cool air curtain from the front opening of the display room and returns to the lower duct. (For example, refer to Patent Document 1).

JP 2007-107732 A

However, when the fan is provided inside the lower duct, it is necessary to provide the lower duct as large as the capacity of the fan. In this case, there is a problem that the display chamber becomes smaller by the amount of the lower duct.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a showcase having a large display room.

  In order to achieve the above object, the present invention provides a main body case, a display chamber of a product provided in the main body case and having an open front surface, a back duct provided on the back side of the display chamber, and the display A ceiling duct provided in the ceiling on the upper side of the room and connected to the rear duct; a lower duct provided in a deck pan on the lower side of the display room and connected to the rear duct; and disposed in the rear duct The lower duct is configured to form a cold air curtain from the front opening of the display chamber via the lower duct, the rear duct, and the ceiling duct. And a fan that guides and circulates in the cool air passage returning to the top, and the fan is disposed in the rear duct and above the heat exchanger.

  The present invention is characterized in that the fan is an axial fan.

  Also, the present invention is characterized in that the fans are configured in a plurality and arranged in a horizontal row.

  Further, the present invention is characterized in that the fans are arranged at equal intervals with other adjacent fans.

  Further, the present invention is characterized in that the plurality of fans arranged in a horizontal row are mounted on one fan unit.

  Further, the present invention is characterized in that the fan unit covers an upper surface of the heat exchanger.

  In the present invention, the surface of the fan unit facing the upper surface of the heat exchanger includes a shielding portion that shields cold air flowing from the heat exchanger side, and an attachment portion to which the fan is attached. And

  In the present invention, the plurality of fans each have an output within a range of 0.5 to 2 W.

  Further, the present invention is characterized in that the fan is arranged on the downstream side of the cold air circulating in the cold air passage with respect to the heat exchanger.

  According to the present invention, since the fan is provided above the heat exchanger provided in the rear duct, it is not necessary to provide the fan in the lower duct. Since the lower duct can be made small, a showcase with a large display room can be provided.

It is a vertical side view of the showcase which concerns on embodiment of this invention. It is the vertical side view which expanded the showcase lower part. It is a perspective view of a showcase in the state where a shelf and a back board were removed. It is a front view of a showcase in the state where a shelf and a back board were removed. It is a perspective view of a fan unit. It is a top view of a fan unit. It is a perspective view of the unit main body of a fan unit. It is a top view of the unit main body of a fan unit.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a vertical side view of a showcase 1 with a shelf 26 removed according to an embodiment of the present invention. FIG. 2 is an enlarged vertical side view of the lower part of the showcase 1. FIG. 3 is a perspective view of the showcase 1 with the shelf 26 and the back plate 11 removed. FIG. 4 is a front view of the showcase 1 with the shelf 26 and the back plate 11 removed.
In addition, below, it is set as the upper and lower sides, front and back, right and left on the basis of the case where the showcase 1 is seen from the front.

The showcase 1 includes a main body case 3. A machine room 60 is provided below the main body case 3.
The main body case 3 includes a heat insulating wall 2 having a substantially U-shaped cross section whose front surface is open. A side plate 5 is attached to the side surface of the heat insulating wall 2. A ceiling plate 10, a back plate 11, and a bottom plate 12 are attached to the inside of the heat insulating wall 2 with a predetermined distance from the heat insulating wall 2. A ceiling duct 20 is formed in the space between the ceiling plate 10 and the heat insulating wall 2. A back duct 21 is formed in the space between the back plate 11 and the heat insulating wall 2. A lower duct 22 is formed in the space between the bottom plate 12 and the heat insulating wall 2. The lower duct 22 is connected to the lower part of the rear duct 21. The upper part of the rear duct 21 is connected to the ceiling duct 20.

A display chamber 8 is provided inside the side plate 5, the ceiling plate 10, the back plate 11, and the bottom plate 12. An opening 9 is provided on the front surface of the display chamber 8.
In the display chamber 8, a pair of brackets 25 that are detachably attached to a back column and shelves 26 held by these brackets are installed in a plurality of stages, in this embodiment, in five stages. A deck pan 27 is attached on the bottom plate 12. Goods are displayed on these shelves 26 and deck pans 27.
The shelf 26 is detachably installed, and the height position at which the shelf is installed can be changed. Further, the shelf 26 and the deck pan 27 can be pulled out forward. When a product is replenished on the shelf 26 or the deck pan 27, it is configured to be able to work by pulling it forward from the opening 9.

  A cool air discharge port 28 is formed at the upper edge of the opening 9. The cold air discharge port 28 communicates with the ceiling duct 20. A cold air inlet 29 is formed at the lower edge of the opening 9. The cold air inlet 29 communicates with the lower duct 22.

The back duct 21 includes a back lower duct 17 provided in the lower part and a back upper duct 18 provided in the upper part.
Inside the back lower duct 17, a heat exchanger 30 constituting a refrigeration cycle of the cooling device is provided. The heat exchanger 30 is formed long in the left-right direction of the rear duct 21 and is formed in a substantially rectangular shape when viewed from the front.
As shown in FIGS. 1 and 2, the dew condensation water generated in the heat exchanger 30 flows from the back duct 21 to the lower duct 22 and flows down from the lower duct 22 to the machine room 60.

  The rear lower duct 17 and the rear upper duct 18 are partitioned by a partition cover 19 that surrounds the heat exchanger. The partition cover 19 includes a side cover 19B provided on the side of the heat exchanger 30 on the display chamber 8 side, and an upper cover 19A provided immediately above the heat exchanger 30. The upper cover 19A is provided with a substantially rectangular ventilation hole (not shown) in a top view. A fan unit 40 is attached to the upper portion of the upper cover 19A so as to close the vent hole.

FIG. 5 is a perspective view of the fan unit 40. FIG. 6 is a plan view of the fan unit 40. FIG. 7 is a perspective view of the unit main body 41 of the fan unit 40. FIG. 8 is a plan view of the unit main body 41.
The fan unit 40 includes a unit main body 41 attached to the upper cover 19A, and a fan 43 detachably attached to the unit main body 41.
The fan unit 40 is arrange | positioned so that the upper surface of the heat exchanger 30 may be covered by top view. The length of the fan unit 40 in the long side direction may be provided so as to substantially match the length of the heat exchanger 30 in the long side direction. By providing the length in the long side direction of the fan unit 40 and the length in the long side direction of the heat exchanger 30 so as to substantially coincide with each other, it is possible to efficiently circulate cold air generated by heat exchange of the heat exchanger 30.

  The fan unit 40 and the fan 43 are disposed on the downstream side of the heat exchanger 30 in the cold air passage through which the cold air generated by heat exchange of the heat exchanger 30 circulates. In the present embodiment, the fan unit 40 is attached to the upper cover 19A provided immediately downstream of the heat exchanger 30, that is, immediately above the heat exchanger 30. Since the distance between the fan unit 40 and the heat exchanger 30 is short, the fan 43 can efficiently circulate cold air generated by heat exchange of the heat exchanger 30. Further, since the fan unit 40 is attached to the upper cover 19A, it is not necessary to provide a separate member between the upper cover 19A and the fan unit 40, and the number of parts can be reduced.

The unit main body 41 is formed in a substantially rectangular shape when viewed from above.
The unit main body 41 includes a facing surface 45 that faces the upper surface of the heat exchanger 30 with the fan unit 40 attached to the showcase 1, and an upper extending portion that extends upward from one side of the long side of the facing surface 45. 46 and a lower extending portion 47 that extends downward from the other side of the long side of the facing surface 45.
The unit main body 41 is disposed above the upper cover 19A so as to close a vent hole (not shown). The upper extension 46 is fixed to the heat insulating wall 2 by screws. The lower extension 47 is fixed to the side cover 19B by screws.

The facing surface 45 includes a shielding part 49 that shields cooling air flowing from the heat exchanger 30 side, and a fan attachment hole (attachment part) 48 to which the fan 43 is attached. Screw holes 55 are provided at two corners located on the diagonal of the fan mounting hole 48.
A plurality of fan mounting holes 48 are provided in a horizontal row. In the present embodiment, the fan mounting holes 48 are provided at seven locations in the direction parallel to the long side of the unit main body 41 with equal intervals between the adjacent fan mounting holes 48.

  A fan 43 is provided in each fan mounting hole 48. The fan 43 forms a cold air curtain from the opening 9 of the display chamber 8 via the lower duct 22, the rear duct 21, and the ceiling duct 20, and returns to the lower duct 22 through the lower duct 22, the rear duct 21, and the ceiling duct 20. Circulate so that. The cold air is circulated only by the fan 43 provided in the rear duct 21.

  The fan 43 includes a fan frame 51 formed in a substantially square shape in plan view. The fan 43 is attached to the unit main body 41 by fixing two corners located on the diagonal line of the fan frame 51 to the screw holes 55 using screws 44. The fan 43 is provided at seven locations in the direction parallel to the long side of the unit main body 41 with equal intervals between the adjacent fans 43. The seven fans 43 are arranged in a horizontal row.

In this embodiment, the fan 43 is configured as an axial fan. The fan 43 is disposed substantially parallel to the upper surface of the heat exchanger 30 and is disposed so as to be able to blow air vertically upward with respect to the upper surface of the heat exchanger 30. The fan 43 is not limited to an axial fan, and may be any fan having a function as a blower.
Each of the outputs of the fans 43 can be set within a range of 0.5 to 2 W, for example. In this case, the fan 43 does not increase in size, and the fan 43 can be easily arranged inside the rear duct 21.
Note that the number of the fans 43 can be appropriately changed to a number necessary for circulating the cool air by heat exchange of the heat exchanger 30 provided in the showcase 1. Further, the number of the fans 43 can be appropriately changed depending on the performance of the fans 43.

Thus, the plurality of fans 43 arranged in a horizontal row are mounted on one fan unit 40. By determining the position of the fan unit 40, the positions of all of the plurality of fans 43 can be determined simultaneously.
In the present embodiment, a plurality of fans 43 are provided in the fan unit 40, but the fans 43 are not necessarily provided in the fan unit 40, and only the fans are in the rear duct 21, and You may arrange | position above the heat exchanger 30 provided in the back surface duct 21. FIG.

Next, the operation of the present embodiment will be described.
Cold air generated by heat exchange of the heat exchanger 30 constituting the refrigeration cycle is sent above the rear duct 21 by the fan 43. Then, the cold air sent above the rear duct 21 is sent to the lower duct 22 through the ceiling duct 20 to form a cold air curtain from the opening 9 of the display chamber 8. The cool air sent to the lower duct 22 is sent to the rear duct 21 and circulates in the showcase 1.
At this time, the dew condensation water generated in the heat exchanger 30 flows from the lower side of the heat exchanger 30 through the lower back duct 17 and the lower duct 22 to the machine room 60 as indicated by an arrow A in FIG.

As described above, the showcase 1 in the present embodiment is provided in the main body case 3, the display chamber 8 of the product provided in the main body case 3 and opened on the front surface, and the back side of the display chamber 8. A rear duct 21, a ceiling duct 20 provided in the ceiling above the display chamber 8 and connected to the rear duct 21, and a lower portion provided inside the deck pan 27 on the lower side of the display chamber 8 and connected to the rear duct 21. The duct 22, the heat exchanger 30 disposed in the rear duct 21, and the cold air generated by the heat exchange of the heat exchanger 30 are passed through the lower duct 22, the rear duct 21, and the ceiling duct 20 to the front opening of the display chamber 8. And a fan 43 that circulates and guides a cool air passage that forms a cool air curtain and returns to the lower duct 22, and the fan 43 is disposed in the rear duct 21 and above the heat exchanger 30.
According to this configuration, since the fan 43 is provided above the heat exchanger 30 provided in the rear duct 21, it is not necessary to provide the fan 43 in the lower duct 22. Since the lower duct 22 can be made smaller, the deck pan 27 can be lowered, and the display chamber 8 can be made larger accordingly.

In addition, since the fan 43 is provided above the heat exchanger, it is difficult for the condensed water generated in the heat exchanger 30 to hit the fan 43 when flowing below the heat exchanger 30, and sound such as watering noise can be suppressed.
Further, for example, unlike the case where the fan 43 is arranged in the lower duct 22, the number of parts in the lower duct 22 is small, so that the cleanability of the flowing water path can be improved.

Further, according to the present embodiment, the fan 43 is an axial fan.
In the rear duct 21 that is long in the height direction and short in the front-rear direction, the cool air by the heat exchange of the heat exchanger 30 can be sent in the height direction that is the axial direction of the axial fan, so that the cool air can be circulated efficiently. . In addition, the fan can be reduced in size.

Moreover, according to this Embodiment, the fan 43 was comprised with multiple and arrange | positioned in the horizontal line.
Since a plurality of fans 43 are arranged in a horizontal row, the fan 43 can be provided above any part of the heat exchanger 30 in the rear duct 21 that is long in the left-right direction and short in the front-rear direction, and can efficiently circulate the cold air. .

Moreover, according to this Embodiment, the fan 43 was arrange | positioned equally with the space | interval with the other fan 43 adjacent.
According to this configuration, it is possible to circulate cold air generated by heat exchange of the heat exchanger 30 evenly. The air curtain formed in the opening 9 can be made uniform, and the air curtain can be prevented from being disturbed.

Further, according to the present embodiment, a plurality of fans 43 arranged in a horizontal row are mounted on one fan unit 40.
Since one fan unit 40 is used, the pre-assembled fan unit 40 can be arranged in the showcase 1 and the assemblability can be improved.
When only some of the fans 43 are to be replaced, they can be easily replaced.

Moreover, according to this Embodiment, the fan unit 40 was comprised so that the upper surface of the heat exchanger 30 might be covered.
According to this structure, the cold air by the heat exchange of the heat exchanger 30 can be covered with the fan unit 40, and cold air can be circulated efficiently.

Further, according to the present embodiment, the facing surface 45 that is the surface of the fan unit 40 that faces the upper surface of the heat exchanger 30 includes the shielding portion 49 that shields the wind flowing from the heat exchanger 30 side, and the fan 43. The fan mounting hole 48 is used as a mounting portion to be mounted.
According to this configuration, since the portions other than the fan attachment hole 48 to which the fan 43 is attached are shielded by the shielding portion 49, cold air is collected in the fan attachment hole 48 through the heat exchanger 30, and the cold air is passed through the fan 43. Can be circulated, and cool air can be circulated efficiently.

Moreover, according to this Embodiment, the fan 43 can make each output into the range of 0.5-2W.
Therefore, the downsized fan 43 can be provided in the rear duct 21.

Further, according to the present embodiment, the fan 43 is disposed on the downstream side of the cold air circulating in the cold air passage from the heat exchanger 30.
According to this configuration, the condensed water generated in the heat exchanger 30 is unlikely to hit the fan 43.

  As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this embodiment. Since only one embodiment of the present invention is illustrated, changes and applications can be arbitrarily made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Showcase 3 Main body case 8 Display room 11 Back plate 12 Bottom plate 17 Back lower duct 18 Back upper duct 19 Partition cover 19A Upper cover 19B Side cover 20 Ceiling duct 21 Rear duct 22 Lower duct 27 Dec pan 30 30 Heat exchanger 40 Fan unit 41 Unit body 43 Fan 44 Screw 45 Opposing surface 46 Upper extension portion 47 Lower extension portion 48 Fan mounting hole (mounting portion)
49 Shield 51 Fan frame 55 Screw hole

Claims (9)

A body case,
A display room for products provided in the main body case and having an open front surface,
A back duct provided on the back side of the display room;
A ceiling duct provided in the ceiling above the display room and connected to the back duct;
A lower duct provided in a deck pan on the lower side of the display chamber and connected to the rear duct;
A heat exchanger disposed in the back duct;
Cooling air from heat exchange of the heat exchanger is circulated and guided to a cold air passage that forms a cold air curtain from the front opening of the display chamber via the lower duct, the rear duct, and the ceiling duct and returns to the lower duct. With fans to
The showcase, wherein the fan is disposed in the rear duct and above the heat exchanger.   The showcase according to claim 1, wherein the fan is an axial fan.   The showcase according to claim 1, wherein the fans are configured in a plurality and arranged in a horizontal row.   The showcase according to claim 3, wherein the fans are arranged at equal intervals with other adjacent fans.   The showcase according to claim 3 or 4, wherein the plurality of fans arranged in a horizontal row are mounted on one fan unit.   The showcase according to claim 5, wherein the fan unit covers an upper surface of the heat exchanger.   The surface of the fan unit facing the upper surface of the heat exchanger includes a shielding portion that shields cold air flowing from the heat exchanger side, and an attachment portion to which the fan is attached. 6. The showcase according to 6.   The showcase according to any one of claims 3 to 7, wherein each of the plurality of fans has an output within a range of 0.5 to 2W.   The showcase according to any one of claims 1 to 8, wherein the fan is arranged downstream of the cool air circulating in the cool air passage with respect to the heat exchanger.

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