JP5557364B2 - Open around showcase - Google Patents

Description

  The present invention relates to an open around showcase.

  Conventionally, open showcases have been widely used in supermarkets and convenience stores. The open showcase is a showcase in which a product storage unit for storing products to be sold is opened, and products can be taken out from the opening. In such an open showcase, a duct through which cooling air flows is formed on the back side of the case body, and a plurality of air outlets connected to the duct are provided at the upper peripheral edge of the case main body, and the lower peripheral edge of the case main body is provided. A plurality of suction ports communicated with the duct are provided in the part. And the cooling air which flows in the inside of a duct is blown out from a blower outlet, the blown cooling air is sucked in from a suction opening, and the air curtain which covers the opening of a goods storage part with the cooling air which flows toward a suction opening from a blower outlet is formed. Yes. By forming this air curtain, the product stored in the product storage unit is cooled.

  As one form of such an open showcase, there is known an open around showcase in which the front side and the side surface of the product storage unit and the corner side between the front side and the side surface are opened (for example, , See Patent Documents 1 and 2 below).

  In the open around showcase, cooling air that is blown out from the air outlet located opposite to the front side of the product storage unit and sucked from the suction port located on the front side of the product storage unit, or on the side of the product storage unit The amount of cooling air that is blown out from the air outlet that is located opposite and sucked from the air inlet that is located on the side surface side of the product storage portion increases, and is blown out from the air outlet that is located opposite the corner side of the product storage portion. The amount of cooling air sucked from the suction port located on the corner side of the product storage portion is reduced. For this reason, it exists in the tendency for the cooling performance by the side of the corner of a goods storage part to fall.

  Therefore, in Patent Document 2 below, a blowout hole for blowing cooling air toward the corner side of the product storage portion is formed in the corner of the duct, and an inclined surface is formed at the corner of the duct as a portion for forming the blowout hole. Is forming.

JP 2008-144974 A JP-A-11-153376

  However, since the cooling air flowing in the duct is difficult to enter the corner of the duct, the cooling air that blows out toward the corner of the product storage portion is formed even if the blow hole or the inclined surface is formed in the corner of the duct. It is difficult to ensure a sufficient amount. Therefore, it is difficult to sufficiently improve the cooling performance on the corner side of the product storage unit.

  The present invention has been made in order to solve such problems, and its purpose is to increase the amount of cooling air blown from the outlet toward the corner of the product storage unit in the open around showcase, thereby storing the product. It is to improve the cooling performance on the corner side of the part.

A first feature according to the present invention is a case main body, a duct formed in the case main body, provided around the duct, and provided between the front side and the side surface and between the front side and the side surface. A product storage section having an opening for taking out a product on the corner side, a plurality of outlets provided at the upper peripheral edge of the case body and communicating with the duct, and provided at the lower peripheral edge of the case main body A plurality of suction ports connected to the duct, a cooler for cooling the air in the duct, and the cooling air cooled by the cooler is circulated so as to be blown out from the blowout port and sucked from the suction port. A first fan that forms an air curtain that covers the opening of the product storage portion by cooling air flowing from the outlet toward the suction port. Provided at the upper side of the inner, and a second fan to increase the amount of cooling air blown from the air outlet toward the corner side of the commodity storage unit, the temperature detecting unit for detecting the temperature of the corner side of the commodity storage unit And a control unit that controls the rotational speed of the second fan based on the detection result of the temperature detection unit .

According to a second aspect of the present invention, in the open around showcase according to the first aspect, the duct includes a surface of the duct located on the front side of the product storage unit and the front side of the product storage unit. The distance between the suction port located at the side of the product storage portion and the suction port located at the side surface of the product storage portion is shorter than the distance between the suction port located on the side surface of the product storage portion. That is, it is formed so as to spread on the front side of the product storage unit.

According to a third aspect of the present invention, in the open around showcase according to the first or second aspect, the air outlet located opposite the front side of the product storage unit and the front surface of the product storage unit The distance to the suction port located on the side is shorter than the distance between the air outlet located facing the side surface side of the product storage portion and the suction port located on the side surface side of the product storage portion. That is.

According to the 1st characteristic concerning the present invention, since the quantity of the cooling air which blows off toward the corner side of a goods storage part from a blower outlet increases, the cooling performance of the corner side of a goods storage part can be improved. Furthermore, the rotation speed of the second fan can be controlled according to the temperature on the corner side of the product storage section. For example, when the temperature on the corner side of the product storage section is high, the rotation speed of the second fan is increased. The amount of cooling air blown toward the corner of the product storage unit can be increased, and the cooling performance on the corner side of the product storage unit can be improved.

According to the second feature of the present invention, since the cross-sectional area of the duct is widened toward the front side of the product storage unit, the amount of cooling air flowing in the duct can be increased, and It is possible to increase the amount of cooling air blown toward the corner of the product storage unit.

According to the third feature of the present invention, since the distance between the air outlet and the suction port is shortened on the front side of the product storage portion, the air suction port is blown out from the air outlet on the front side of the product storage portion. This reduces the amount of cooling air that leaks out without being sucked in, and reduces wasted energy.

It is a top view which shows the open showcase of one embodiment of this invention. It is a cross-sectional side view which shows the open around showcase which comprises an open showcase. FIG. It is a block diagram which shows the electrical connection state of a temperature detection part and a 2nd fan.

  An embodiment of the present invention will be described with reference to the drawings. The open showcase 1 shown in FIG. 1 is configured by connecting two open around showcases 2 and four open direct showcases 3 back to back.

  The open around showcase 2 has a case body 4, which is located on the lower side of the case body 4 and extends in the horizontal direction, and on the back side of the case body 4. Thus, a duct 5 including a rear duct 5b extending in the vertical direction and an upper duct 5c located on the upper side of the case body 4 and extending in the horizontal direction is formed. Surrounding the duct 5 are a front side 6a, a side surface 6b located on both sides of the front side 6a, and a corner side 6c located between the front side 6a and the side surface 6b. A product storage section 6 is provided so as to surround the shape of the letter. The product storage unit 6 is a place where products to be sold are stored, and the front side 6a, the side surface 6b, and the corner side 6c are opened. The product storage section 6 is provided with a plurality of product display shelves 7 in the vertical direction.

  A plurality of outlets 8 are formed in the upper peripheral edge of the case body 4 so as to face the front side 6a, the side surface 6b, and the corner side 6c of the product storage unit 6 and communicate with the upper duct 5c. ing. These air outlets 8 are locations where cooling air for cooling the products stored in the product storage unit 6 is blown out, and obliquely downward so that the blown cooling air flows in a direction covering the product storage unit 6. Is open.

  A plurality of suction ports 9 are formed at the lower peripheral edge of the case body 4 to suck in the cooling air blown from the blower outlet 8 and communicate with the lower duct 5a. These suction ports 9 are opened upward.

  A cooler 11 and a first fan 12 are installed in the lower duct 5a.

  The cooler 11 has a refrigerant pipe through which the refrigerant flows, and cools the air in the duct 5 by vaporizing the refrigerant in the refrigerant pipe.

  The first fan 12 blows the cooling air in the duct 5 cooled by the cooler 11, and circulates the cooling air so as to be blown out from the blowout port 8 and sucked from the suction port 9. The cooling air blown out from the blowout port 8 and sucked into the suction port 9 flows as indicated by an arrow X in FIG. An air curtain that covers the opening of the product storage unit 6 is formed by the cooling air flowing in the direction of the arrow X, and the product stored in the product storage unit 6 is cooled by the air curtain.

  The second fan 13 is installed at two positions on the upper end side of the rear duct 5b and facing the corner side 6c of the product storage unit 6. These second fans 13 are installed with the air blowing direction directed toward the corner side 6c of the product storage unit 6, and the second fan 13 is driven to move the inside of the upper duct 5c in the direction indicated by the arrow Y (see FIG. 3). Increases the amount of cooling air flowing. Further, the amount of cooling air that is blown out in the direction of arrow Z (see FIG. 3) from the outlet 8 that opens toward the corner side 6c of the product storage unit 6 toward the corner side 6c increases.

  The second fan 13 has a rotary blade 13a and a drive motor 13b, and a DC motor is used as the drive motor 13b.

  Moreover, the temperature detection part 14 which detects the temperature of each corner side 6c is installed in each corner side 6c of the goods storage part 6. FIG. As shown in FIG. 4, these temperature detectors 14 are connected to a controller 15 that controls the rotational speed of the second fan 13, and a drive motor 13 b is connected to the controller 15. The rotation speed of the second fan 13 is controlled according to the temperature of the corner side 6c detected by the temperature detection unit 14, and the cooling air blown out toward the corner side 6c by controlling the rotation speed of the second fan 13. The amount of is variable.

  As shown in FIG. 3, the rear duct 5 b has a distance “A” between the duct surface 5 d located on the front side 6 a of the product storage unit 6 and the suction port 9 located on the front side 6 a of the product storage unit 6. The cross-sectional area of the front surface of the product storage unit 6 is set so that the distance between the duct surface 5e positioned on the side surface side 6b of the storage unit 6 and the suction port 9 positioned on the side surface 6b of the product storage unit 6 is shorter than "B". It is formed so as to spread on the side 6a.

  In addition, as shown in FIG. 3, the distance “a” between the air outlet 8 positioned opposite to the front side 6a of the product storage unit 6 and the suction port 9 positioned on the front side 6a of the product storage unit 6 is It is formed shorter than the distance “b” between the air outlet 8 positioned opposite to the side surface 6 b of the storage unit 6 and the suction port 9 positioned on the side surface 6 b of the product storage unit 6.

  The basic configuration of the open direct showcase 3 is the same as that of the open around showcase 2, has a case main body 20, a duct 21 is formed in the case main body 20, and a product storage portion 22 is formed on the front side of the duct 21. Is provided.

  A plurality of air outlets 23 are formed at the upper side edge of the case body 20 so as to face the product storage unit 22 and communicate with the duct 21. These air outlets 23 are locations where cooling air for cooling the product stored in the product storage unit 22 is blown out, and is opened obliquely downward so that the blown cooling air flows in a direction covering the product storage unit 22. ing.

  A plurality of suction ports 24 for sucking cooling air blown from the blower outlets 23 are formed at the lower side edge of the case body 20. These suction ports 24 are opened upward.

  In each duct 21 of each open direct showcase 3, a cooler (not shown) for cooling the air in the duct 21, and cooling air cooled by the cooler are blown out from the outlet 23 and from the inlet 24. A fan (not shown) that circulates so as to suck in is provided.

  In such a configuration, when the open showcase 1 is turned on, the cooler 11, the first fan 12, and the second fan 13 are driven in the open around showcase 2. On the other hand, in the open direct showcase 3, the cooler and the fan are driven.

  By driving the cooler 11 of the open around showcase 2, the air in the duct 5 of the open around showcase 2 is cooled. Moreover, the air in the duct 21 of the open direct showcase 3 is cooled by driving the cooler of the open direct showcase 3.

  When the first fan 12 of the open around showcase 2 is driven, the cooling air cooled by the cooler 11 flows through the duct 5 and blows out from the outlet 8 as indicated by an arrow X in FIG. Sucked from the suction port 9. The air curtain that covers the opening of the product storage unit 6 is formed by the cooling air that is blown out from the air outlet 8 and is sucked in from the air inlet 9. On the other hand, when the fan of the open direct showcase 3 is driven, the cooling air cooled by the cooler flows through the duct 21 and blows out from the outlet 23 and is sucked in from the inlet 24. An air curtain covering the opening is formed.

  In this way, the air curtain covering the opening of the product storage unit 6, 22 is formed in both the open around showcase 2 and the open direct showcase 3, so that the product storage unit 6, 22 of the open showcase 1. The goods stored inside are cooled.

  In the open-around showcase 2, the amount of cooling air blown out from the air outlet 8 when the first fan 12 is driven is such that the air outlet 8 or the product storage located opposite the front side 6 a of the product storage unit 6. Cooling of the corner side 6c of the product storage unit 6 is increased at the air outlet 8 positioned facing the side surface 6b of the part 6 and decreased at the air outlet 8 positioned facing the corner side 6c of the product storage unit 6. Performance decreases.

  Therefore, the second fan 13 is provided in the open around showcase 2 of the present embodiment. When the second fan 13 is driven, the amount of cooling air blown in the arrow Y direction and the arrow Z direction shown in FIG. 3 increases. Thereby, the quantity of the cooling air which blows off toward the corner side 6c of the goods storage part 6 can be increased, and the cooling performance of the corner side 6c of the goods storage part 6 can be improved.

  The rotation speed of the second fan 13 is controlled by detecting the temperature of the corner side 6c of the product storage unit 6 with the temperature detection unit 14, and based on the detection result. For this reason, when the temperature of the corner side 6c of the product storage unit 6 is higher than the set temperature, the rotational speed of the second fan 13 is increased, and the air outlet 8 positioned opposite to the corner side 6c of the product storage unit 6 is used. The amount of cooling air to be blown out can be increased, and the temperature of the corner side 6c can be lowered to the set temperature. On the other hand, when the temperature of the corner side 6c of the product storage unit 6 is lower than the set temperature, control is performed so as to reduce the rotational speed of the second fan 13.

  Since the second fan 13 uses a DC motor as the driving motor 13b, energy saving can be achieved as compared with the case where an AC motor is used. Furthermore, by using a DC motor, the rotation speed of the second fan 13 can be easily switched compared to the case of using an AC motor, and the temperature of the corner side 6c of the product storage unit 6 can be set with high accuracy. Can be maintained at temperature.

  As shown in FIG. 3, in the rear duct 5b, the distance "A" between the duct surface 5d located on the front side 6a of the product storage unit 6 and the suction port 9 located on the front side 6a of the product storage unit 6 is It is formed to be shorter than the distance “B” between the duct surface 5e located on the side surface 6b of the storage portion 6 and the suction port 9 located on the side surface 6b of the product storage portion 6, and the cross-sectional area of the back duct 5b is the product It is widened toward the front side 6 a of the storage unit 6. For this reason, the quantity of the cooling air which flows in the duct 5 can be increased, the quantity of the cooling air which blows off from the blower outlet 8 located facing the corner side 6c of the goods storage part 6 can be increased, The cooling performance of the corner side 6c of the storage part 6 can be improved.

  In addition, as shown in FIG. 3, the distance “a” between the air outlet 8 positioned opposite to the front side 6a of the product storage unit 6 and the suction port 9 positioned on the front side 6a of the product storage unit 6 is It is formed shorter than the distance “b” between the air outlet 8 positioned opposite to the side surface 6 b of the storage unit 6 and the suction port 9 positioned on the side surface 6 b of the product storage unit 6. For this reason, on the front side 6 a of the product storage unit 6, the dimension of the air curtain from the outlet 8 to the inlet 9 is shortened. As a result, the amount of cooling air that is blown out from the air outlet 8 and leaks without being sucked in from the air inlet 9 can be reduced, and energy can be saved by reducing waste of energy for generating the cooling air.

  In the present embodiment, one front side 6a and two side surfaces 6b located on both sides thereof are provided, and two corner sides 6c located between the front side 6a and the side surfaces 6b are further provided. The open-around showcase 2 having the U-shaped product storage unit 6 has been described as an example, but the structure of the open-around showcase 2 is not limited to this. For example, in an open around showcase having an L-shaped product storage portion having one front side and one side located on one side and having one corner between the front and side The present invention can also be applied.

DESCRIPTION OF SYMBOLS 1 Open showcase 2 Open around showcase 3 Open direct showcase 4 Case main body 5 Duct 5a Lower duct 5b Rear duct 5c Upper duct 5d Duct surface 5e Duct surface 6 Merchandise storage part 6a Front side 6b Side side 6c Corner side 7 Display shelf 8 Air outlet 9 Suction port 11 Cooler 12 First fan 13 Second fan 13a Rotating blade 13b Driving motor (DC motor)
14 Temperature detection unit 15 Control unit 20 Case body 21 Duct 22 Product storage unit 23 Air outlet 24 Suction port

Claims (3)

The case body,
A duct formed in the case body;
A product storage unit provided around the duct, and provided with an opening for taking out products on the front side and the side surface and the corner side between the front side and the side surface;
A plurality of outlets provided at the upper peripheral edge of the case body and communicated with the duct;
A plurality of suction ports provided in the lower peripheral edge of the case body and communicated with the duct;
A cooler for cooling the air in the duct;
An air curtain that circulates cooling air cooled by the cooler from the air outlet and sucks it from the air inlet, and covers the opening of the product storage unit with the cooling air flowing from the air outlet toward the air inlet. With the first fan to form
In an open around showcase with
A second fan which is provided on the upper end side in the duct and increases the amount of cooling air which is blown out from the outlet toward the corner of the product storage unit ;
A temperature detection unit for detecting the temperature on the corner side of the product storage unit;
An open-around showcase, comprising: a control unit that controls the rotational speed of the second fan based on a detection result of the temperature detection unit . In the duct, the distance between the surface of the duct located on the front side of the product storage unit and the suction port located on the front side of the product storage unit is located on the side surface side of the product storage unit. 2. The front side of the product storage unit is formed so as to be shorter than the distance between the surface of the duct and the suction port located on the side of the product storage unit. The listed open around showcase. The distance between the air outlet located facing the front side of the product storage unit and the suction port located on the front side of the product storage unit is located facing the side surface of the product storage unit. The open-around showcase according to claim 1 or 2, wherein a distance between the air outlet and the suction port located on the side surface of the product storage unit is shorter .

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