JPH07218093A - Open display case - Google Patents

Abstract

PURPOSE:To provide an open display case in which an air flow rate of a air curtain can be varied in response to a commodity to be contained and a commodity containing efficiency can be enhanced. CONSTITUTION:At least double air curtain 7 covering a front opening 3A of a commodity containing chamber 3 is formed with cold gas to be diffused from an inner layer diffuser 5 and an outer layer diffuser 4 provided at the chamber 3 through an inner layer 1 and an outer layer 2. A communication window 17 formed at a partition plate is opened by a damper 18 in response to a containing temperature of a commodity contained in the chamber 3, and cold gas is diffused only from the diffuser 3 to form a single air curtain. Thus, when the single air curtain is formed, a moving commodity placing shelf 20 is moved forward to a position near the curtain of the layer 2, and a rear auxiliary shelf 21 is detachably mounted between the moved shelf 20 and a back wall 3a of the chamber 3, thereby increasing a commodity placing area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open showcase in which a front opening of a product storage room is covered with at least double cold air curtains.

[0002]

2. Description of the Related Art In conventional convenience stores, side dishes,
Items such as lunch boxes and sandwiches are stored in an open showcase that has a product storage room with an open front. In this open showcase, it is necessary to keep the temperature in the product storage chamber at a temperature (5 to 8 ° C for prepared foods, 15 to 18 ° C for lunch boxes and sandwiches) according to the products to be stored.

Therefore, conventionally, cold air is blown out from an outlet provided at the upper end of the product storage chamber to cool the product storage chamber, and a part of the cool air is blown toward a suction port provided at the lower end. A front air opening is covered by a cool air curtain formed as described above to block the inside and outside of the product storage room. It should be noted that this air curtain is formed in a single layer because the temperature inside the product storage room is relatively high.

By the way, recently, in addition to side dishes, bento boxes, sandwiches, etc., convenience stores are selling meat sliced into a predetermined size. Here, since the storage temperature of such meat is 0 to 5 ° C., which is lower than that of prepared foods and the like, it is necessary to lower the temperature of the product storage room and to more reliably block the product storage room from the outside. is there.

For this reason, conventionally, meat is replaced with an open showcase that forms a single air curtain up to that point, and as shown in FIG. 9, the meat passes through the inner layer 1 and the outer layer 2 and the upper end portion of the commodity storage chamber 3 passes therethrough. Product storage by at least double air curtains 7 formed by the cool air blown out respectively from the outer layer outlet 4 and the inner layer outlet 5 provided at Front opening 3 of chamber 3
It is housed in the open showcase 8 which covers A. Such an open showcase is disclosed in, for example, Japanese Patent Publication No. 4-50510 and Japanese Patent Publication No. 5-3.
It is disclosed in Japanese Patent No. 5343.

[0006]

By the way, in such a conventional open showcase that forms at least a double air curtain of cold air, when storing products such as prepared foods having a relatively high storage temperature, the products are stored. The storage room temperature is set high. However, even when the product storage room temperature is set high in this way, there is a problem in that the use efficiency of cold air is poor because a double cold air curtain is formed.

Further, in the open showcase which forms such a double cold air curtain, since the depth of the air curtain is large, the air curtain 7 is placed in the product storage chamber 3 as shown in FIG. It will come in. Then, there is a problem that the depth dimension of the product placing shelf 9 is reduced by the amount that the air curtain 7 is inserted so as not to disturb the air curtain 7, and the storage efficiency of the open showcase is deteriorated.

Therefore, the present invention has been made in order to solve such a problem, and it is possible to change the air flow rate of the air curtain according to the product to be stored, and
It is intended to provide an open showcase that can improve product storage efficiency.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a front face is opened and a product storage chamber in which a product placing shelf is disposed, an inner layer in which a cooler and an inner layer fan are disposed, and an outer layer are disposed. A front surface of the product storage chamber through an inner layer and an outer layer and a cool air blown from an inner layer outlet and an outer layer outlet provided at an upper end of the product storage chamber. In an open showcase configured to form at least a double air curtain that covers the opening, with the blowing of cool air from the outer layer outlet and the inner layer outlet according to the storage temperature of the products stored in the product storage chamber, The air curtain switching means is provided for switching to the blowing of cool air only from the outer layer outlet.

According to the present invention, the air curtain switching means is provided with a partition plate for partitioning the inner layer and the outer layer into a communication window for communicating the inner layer and the outer layer, and the communication window is openably and closably attached to the communication window. It is composed of a damper that operates to open the side and close the inner layer side.

Further, according to the present invention, the product placing shelf can be moved forward to a position close to the air curtain of the outer layer, and the product placing shelf moved forward and the back wall of the product storing chamber. A rear auxiliary shelf is detachably attached between the two.

Further, according to the present invention, a front auxiliary shelf is detachably attached to the front end of the product placing shelf.

Further, in the present invention, the product placing shelf comprises a fixed shelf and a movable shelf which is held on the fixed shelf so as to be movable forward to a position close to the air curtain of the outer layer.

Further, according to the present invention, an opening for passing the air curtain is formed over the entire width at the front end of the product placing shelf, and the opening is covered with a net-like or rod-like member on which the product can be placed. It was done.

[0015]

According to the first aspect of the present invention, there is provided an inner layer outlet provided at the upper end of the product storage chamber, passing through the inner layer provided with the cooler and the inner layer fan and the outer layer provided with the outer layer fan, The cool air blown from the outer layer outlet forms at least a double air curtain that covers the front opening of the product storage chamber. Then, depending on the storage temperature of the product stored in the product storage chamber, the air curtain switching means switches between blowing of cool air from the outer layer outlet and the inner layer outlet and blowing of cool air only from the outer layer outlet. .

According to a second aspect of the present invention, the air curtain switching means is formed on a partition plate for partitioning the inner layer and the outer layer, and a communication window for communicating the inner layer and the outer layer, and a damper which is openably and closably attached to the communication window. When the damper is opened, the outer layer side is opened and the inner layer side is closed, so that the cool air is blown out only from the outer layer outlet to form a single air curtain.

According to the third aspect of the present invention, the product placing shelf can be moved forward to a position close to the air curtain of the outer layer, and the product placing shelf moved forward and between the back wall of the product storage chamber. By attaching the rear auxiliary shelf freely,
Try to expand the product loading area.

According to the fourth aspect of the present invention, the product loading area is expanded by detachably attaching the front auxiliary shelf to the front end of the product loading shelf.

According to a fifth aspect of the present invention, the product placing shelf is constituted by a fixed shelf and a movable shelf which is held on the fixed shelf so as to be movable forward to a position close to the air curtain of the outer layer. When the air curtain is formed, the moving shelf portion is moved forward to expand the product placing area.

According to a sixth aspect of the present invention, an opening for passing the air curtain is formed at the front end of the product placing shelf over the entire width, and the opening is covered with a net-like or rod-like member on which the product can be placed. By doing so, the product placing area can be expanded without causing the air curtain to be disturbed.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an open showcase according to an embodiment of the present invention, and FIG. 2 is a side sectional view thereof.
In the figure, the same reference numerals as those in FIG. 9 indicate the same or corresponding parts.

In FIGS. 1 and 2, reference numeral 10 denotes a heat-insulating box body having an open front surface which constitutes an open showcase.
1 is a machine room which is provided below the product storage chamber 3 and in which cooling units such as a compressor 11a, a condenser 11b, a condenser fan 11c, and the like are arranged. Reference numeral 12 denotes a Dick pan arranged at the bottom of the product storage chamber 3, and an inner layer fan 13 and an outer layer fan 14 are arranged in the space between the Dick pan 12 and the heat insulating box 10. , Further inner layer 1
An evaporator 15 is arranged in the.

By the way, the inner layer 1 and the outer layer 2 are configured to be partitioned by a partition plate 16 formed of, for example, an iron plate. The partition plate 16 communicates with the inner layer 1 and the outer layer 2. 17 is formed, and an electric damper 18 is openably and closably attached to the communication window 17.

When the damper 18 is opened, it operates so that the outer layer 2 side is opened and the inner layer 1 side is closed, as shown in FIG. 4, which will be described later. Air curtain switching means for switching between blowing of cool air from the outer layer outlet 4 and inner layer outlet 5 and blowing of cool air only from the outer layer outlet 4 in accordance with the storage temperature of the products stored in the product storage chamber 3. Are formed.

When the damper 18 is opened and the cool air is blown from only the outer layer outlet 4, the single air curtain 7 is formed as shown in FIG. In the present embodiment, in order to simplify the structure of the air curtain switching means, the communication window 17 is formed horizontally in, for example, the upper end portion of the partition plate 16, and the communication window 17 is formed by a single member. It is designed to open and close at 18.

On the other hand, a controller (not shown) for controlling the operation of the damper 18 is arranged at a predetermined position of the open showcase 8, and for example, in the case of storing a prepared food or the like having a relatively high storage temperature, The controller 18 is operated to open the damper 18 to form a single air curtain.

By the way, in the present embodiment, the suction port 6
Further, an electric auxiliary damper 19 interlocking with the damper 18 is provided so as to be openable and closable. Here, this auxiliary damper 19
Normally, the suction port 6 is opened so that the cool air is introduced into the inner layer 1 and the outer layer 2, and when the damper 18 operates, the cool air does not enter the outer layer 2 side of the suction port 6 in conjunction with this. This is for closing the suction port 6.

When the air curtain is a single layer, the controller closes the damper 18 and the auxiliary damper 19 and stops the outer layer fan 14.
As a result, the inner layer fan 13 for the inner layer 1 of the suction port 6
The cool air sucked from the side passes through the evaporator 15, passes through the communication window 17 opened by the damper 18, and is blown out only from the outer layer outlet 4.

By the way, in FIG. 2, reference numeral 20 denotes a movable product placing shelf which is movable forward. When the air curtain is a single unit, the moving product placing shelf 20 is as shown in FIG. The outer layer 2 is moved forward to a position close to the air curtain 7. When the moving product placing rack 20 is moved forward in this way, a gap is created between the back wall 3a of the product storage chamber 3 and the moving product placing rack 20, which is shown in FIG. As shown, the rear auxiliary shelves 21 are mounted to increase the product placing area and enhance the product placing efficiency.

Further, in the figure, 22 is a shelf support, 23 is a shelf support for holding the moving product loading shelf 20 so as to be movable forward, and 20a is a shelf decoration. The rear auxiliary shelf 21 is held by the shelf receiver 23.

In the open showcase configured as described above, when the product to be stored is a product such as meat whose storage temperature is low, the damper 1 is controlled by the controller.
8 is set to a position where the communication window 17 is closed, and cool air is blown from the outer layer outlet 4 and the inner layer outlet 5 to cover the front opening 3A of the product storage chamber 3 with at least the double air curtain 7.

On the other hand, when the product to be stored is a prepared food or the like having a high storage temperature, the damper 1 is controlled by the controller.
8, the communication window 17 is opened as shown in FIG. 4, and the cool air is blown out only from the outer layer outlet 4, and the front opening of the product storage chamber 3 is formed by the single air curtain formed by the cool air from the outer layer 2. Cover 3A. When a single air curtain is formed in this way, the moving product placing shelf 20 is moved forward as shown in the figure, and the back wall 3a of the product storage chamber 3 and the moving product placing shelf are moved. The rear auxiliary shelf 21 is mounted in the space between the rear auxiliary shelf 21 and the rear auxiliary shelf 21.

In this way, the communication window 17 is opened and closed by operating the damper 18 in accordance with the storage temperature of the product stored in the product storage chamber 3, and when the damper 18 is opened, the outer layer side is opened and the inner layer is opened. By closing the side, the air volume of the air curtain can be changed by blowing the cool air only from the outer layer outlet 4.

In the above description, one communication window 1 is used.
7 has been described in which a single damper 18 is used to open and close. However, when a plurality of communication windows 17 are formed in the lateral direction, the dampers 18 can be opened and closed in these communication windows 17, respectively. It may be provided. As a result, the damper 18 can be downsized, and the damper 18
Operation becomes easier.

By the way, in the above description, in order to enhance the product storage efficiency, the movable product placing shelf 20 is movable and the rear auxiliary shelf 21 is provided as described above. The invention is not limited to this. For example, as shown in FIG.
The front auxiliary shelf 21a may be attached to the front of the product placing shelf 9. The front auxiliary shelf 21a is attached, for example, by providing a hook (not shown) for locking the front auxiliary shelf 21a and locking the hook to the front of the product placing shelf 9. Make sure to attach it.

Further, as shown in FIG.
Is composed of a fixed shelf 24 and a movable shelf 25 movably held in the fixed shelf 24 in the front-rear direction as indicated by an arrow, and when the single air curtain 7 of the outer layer 2 is formed, the movable shelf is 25 may be moved to a position close to the air curtain to expand the product mounting area of the product mounting shelf 9.

Furthermore, as shown in FIG. 7, an opening (not shown) for passing the air curtain is formed over the entire width at the front end of the product placing shelf 9, and this opening can be placed on the product. It may be covered with a mesh member such as a mesh wire mesh 26. By thus forming the opening covered with the wire netting 26 over the entire width at the front end of the product placing shelf 9, a double air curtain is formed, and the air formed by the cool air from the inner layer 1 is formed. Even if the curtain comes into contact with the front end portion of the product placing shelf 9, it is possible to prevent the turbulence of the cool air from occurring.

Even when the product is placed on the wire net 26, the cold air hits the product, flows along the side surface of the product, and then passes through the opening, so that the air curtain is not disturbed. It hardly happens.

By the way, as shown in FIG. 8, the opening is covered with a plurality of product-carrying members 27 arranged in the width direction of the product-carrying shelf 9, for example, thin pipes or rod-shaped members 27 such as wires. You may do it. By thus covering the opening with the rod-shaped member 27, the product holding force in the opening can be increased as compared with the case where the opening is covered with the wire net 26. The rod-shaped member 27 is
It may be arranged in the depth direction of the product placing shelf 9.

[0041]

As described above, according to the present invention, depending on the storage temperature of the product stored in the product storage chamber, the cool air is blown from the outer layer outlet and the inner layer outlet and the cool air is blown from the outer layer outlet only. Since it is possible to switch to the blowout, it is possible to change the air volume of the air curtain according to the product to be stored.

Further, the product loading shelf can be moved forward to a position close to the outer layer air curtain, and a rear auxiliary shelf can be mounted between the product loading shelf moved forward and the back wall of the product storage chamber. It is possible to increase the product storage area and enhance the product storage efficiency by attaching the front auxiliary shelves to the front end of the product storage shelves.

Further, the product loading shelf is composed of a fixed shelf and a movable shelf which is held on the fixed shelf so as to be movable forward to a position close to the outer layer air curtain, and a single air curtain is formed. In this case, by moving the moving shelves forward, the product placing area can be expanded and the product storage efficiency can be improved.

Further, an opening for passing the air curtain is formed at the front end of the product placing shelf over the entire width, and the opening is covered with a net-like or rod-like member on which the product can be placed. The product storage area can be expanded and the product storage efficiency can be improved without causing any disturbance.

[Brief description of drawings]

FIG. 1 is a perspective view of an open showcase according to an embodiment of the present invention.

FIG. 2 is a side sectional view of the open showcase.

FIG. 3 is a perspective view of a shelf attached to the open showcase.

FIG. 4 is a diagram showing a state in which the front opening of the open showcase is covered with a single air curtain.

FIG. 5 is a perspective view of another shelf attached to the open showcase.

FIG. 6 is a perspective view of another shelf attached to the open showcase.

FIG. 7 is a perspective view showing a state in which an opening covered with a wire mesh is formed at a front end of a shelf attached to the open showcase.

FIG. 8 is a perspective view of a shelf in which a plurality of rod-shaped members are attached to the opening.

FIG. 9 is a side sectional view of a conventional open showcase.

[Explanation of symbols]

 1 Inner layer 2 Outer layer 4 Outer layer outlet 5 Inner layer outlet 7 Air curtain 8 Open showcase 9 Product loading shelf 17 Communication window 18 Damper 20 Moving product loading shelf

Claims (6)

[Claims] 1. A product storage chamber in which a front surface is opened and a product placing shelf is arranged, an inner layer in which a cooler and an inner layer fan are arranged, and an outer layer in which an outer layer fan is arranged. At least double air that passes through the inner layer and the outer layer and covers the front opening of the product storage chamber with the cool air blown from the inner layer outlet and the outer layer outlet provided at the upper end of the product storage chamber. In an open showcase configured to form a curtain, with the blowing of cool air from the outer layer outlet and the inner layer outlet according to the storage temperature of the products stored in the product storage chamber,
An open showcase comprising an air curtain switching means for switching to cool air blowing only from the outer layer outlet. 2. The air curtain switching means is formed on a partition plate for partitioning the inner layer and the outer layer to connect the inner layer and the outer layer to each other, and the communication window is openably and closably attached to the communication window. The open showcase according to claim 1, wherein the open showcase includes a damper that operates to open the side and close the inner layer side. 3. The product loading shelf is movable forward to a position close to the outer layer air curtain,
The open showcase according to claim 1, wherein a rear auxiliary shelf is removably attached between the product placing shelf moved forward and the back wall of the product storage chamber. 4. The open showcase according to claim 1, wherein a front auxiliary shelf is detachably attached to a front end of the product placing shelf. 5. The product placing shelf comprises a fixed shelf and a movable shelf that is held by the fixed shelf so as to be movable forward to a position close to the air curtain of the outer layer. The open showcase described. 6. An opening for passing the air curtain is formed over the entire width at the front end of the product placing shelf, and the opening is covered with a net-like or rod-like member on which the product can be placed. The open showcase according to claim 1, which is characterized in that.