JPH0791795A - Open display case - Google Patents

Abstract

PURPOSE:To provide an open display case in which unnecessary operation of a blower for recovering leakage cold air can be prevented without deteriorating operability and increasing a cost. CONSTITUTION:An open display case 1 comprises an air curtain 15 formed at a front opening 10 to discharge cold air from a discharge port 11 at an upper end of the opening 10 of a storage chamber 5 and to suck it from a suction port 12 at a lower end of the opening. A fluorescent lamp 18 for illuminating the chamber 5 is mounted. The case also comprises a fluorescent lamp switch 19 for controlling energization and deenergization of the lamp 18, and a blower 9 for sucking leakage cold air stored on an outer floor of the port 12 upward. The operation of the blower 9 is interlinked with the energization and deenergization of the lamp 18.

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 an air curtain is formed in a front opening of a storage room.

[0002]

2. Description of the Related Art Conventionally, in this type of open showcase, for example, Japanese Utility Model Publication No. 60-30700 (F2).
5D19 / 00), a plurality of shelves are erected in the storage room to display and sell products such as foods, and the front opening of the storage room faces from the discharge port at the upper end to the suction port at the lower end. By discharging cold air, an air curtain was formed to suppress the invasion of outside air. In addition, a fluorescent lamp as an illuminating lamp is attached to each shelf to brightly illuminate the products in the storage room.

However, all the cool air discharged from the discharge port is not sucked into the suction port, and a part of it is inevitably leaked to the outside. In particular, since the air curtain is formed along the front side of each shelf, the air curtain is disturbed and the amount of cold air leaks is increased when the display of the goods on the shelf is poor. The leaked cold air accumulates on the outside floor of the suction port to form a cold air pool, but the cold air pool cools the feet and body of the customer, which impairs their health and impairs their willingness to purchase products. there were.

Therefore, in the conventional open showcase of this kind, in order to eliminate the cold air trap formed on the floor outside the suction port, the cold air in the cold air trap is collected and sucked up above the open showcase to be stored in the store. There was a blower to spread it.

[0005]

However, since the conventional blower for collecting cold air is operated even when the customer is closed, the power consumption is wasted and the life of the blower is short. For that purpose, if a special switch for operating and stopping the blower is installed, it will open
Since it is necessary to operate the switch according to the closing of the store, the operation becomes extremely complicated especially when the number of open showcases is large, and there is a problem that the cost increases due to the increase in the number of parts.

Therefore, an object of the present invention is to provide an open showcase capable of preventing unnecessary operation of a blower for collecting leaked cool air without deteriorating operability and increasing cost. .

[0007]

That is, according to the open showcase 1 of the present invention, cool air is discharged from the discharge port 11 at the upper end of the front opening 10 of the storage chamber 5, and the suction port 1 at the lower end of the opening 10 is formed.
Air curtain 1 in opening 10 by suction from 2
And a switch (fluorescent lamp switch) 19 for controlling lighting and extinguishing of the illuminating lamp (fluorescent lamp) 18, which is provided with an illuminating lamp (fluorescent lamp) 18 for illuminating the inside of the storage chamber 5 A blower 9 for sucking up the leaked cool air accumulated on the outside floor of the suction port 12 is provided, and the operation of the blower 9 is linked with turning on and off of the illumination lamp (fluorescent lamp) 18.

[0008]

The illuminating lamp of the open showcase is normally turned on by the switch when the store is opened and turned off by the switch when the store is closed. According to the open showcase 1 of the present invention, the operation of the blower 9 for sucking up the leaked cold air accumulated on the outer floor of the suction port 12 is performed by the illumination lamp (fluorescent lamp).
Since it is linked with turning on / off of 18, the blower 9 is operated by the operation of the switch (fluorescent lamp switch) 19 only when the customer is present in the store to open the leaked cool air on the floor outside the suction port 12 The blower 9 can be stopped when the store is closed when there are no customers. Therefore, without providing a special switch,
It is possible to prevent unnecessary operation of the blower 9.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view of an open showcase 1 of the present invention, and FIG. 2 is an electric circuit diagram related to the fluorescent lamp 18 of the open showcase 1. As shown in FIG. 1, the open showcase 1 of the embodiment is a low temperature open showcase installed in a store such as a supermarket, and has a heat insulating wall 2 having an opening 10 in the front and an approximately U-shaped cross section. It is configured. A partition plate 3 and a bottom plate 4 are arranged inside the heat insulating wall 2 with a space therebetween, and the insides of the partition plate 3 and the bottom plate 4 serve as a storage chamber 5 which is opened to the front through the opening 10. An air passage 6 is provided between the bottom plate 4 and the heat insulating wall 2.

The upper front end of the air passage 6 has an opening 10 in the heat insulating wall 2.
Is opened at the discharge port 11 located at the upper end of the
The lower front end of is open at the suction port 12 located on the front side of the bottom plate 4 and at the lower end of the opening 10. Further, a cooler 13 of the cooling device is provided in the rear air passage 6 and a blower fan 14 is arranged in the air passage 6 below the bottom plate 4, and the cool air cooled by the cooler 13 is blown by the blower fan 14. And is discharged from the discharge port 11 through the air passage 6 as indicated by the arrow. The cool air discharged from the discharge port 11 is directed to the suction port 12, passes through the front side of the shelf 16 described later, and is sucked into the suction port 12. As a result, the air curtain 15 is formed in the opening 10 of the storage chamber 5, and the inside of the storage chamber 5 is cooled to a predetermined temperature by the discharged cool air.

A plurality of stages of product display shelves 16 ... Are erected in the storage room 5. The front and rear widths of the shelves 16 are expanded toward the lower ones, so that the customer can easily see the products such as foods on the shelves 16 ... In addition, at the front end of the upper part of the heat insulating wall 2, the eaves 1
7 are attached to the lower surface of the top plate 3a of the partition plate 3, the inner surface of the eaves 17, and the lower surface of the front of each of the product display shelves 16 ... Fluorescent lamps 18 are mounted as illumination lamps for facilitating viewing of the products (not shown) displayed on the display 4. Further, a fluorescent lamp switch 19 for controlling lighting / extinction of the fluorescent lamps 18 ... Is attached to the inner surface of the eaves 17.

A duct plate 7 is attached to the back surface of the heat insulating wall 2 with a gap from the heat insulating wall 2, and a duct 8 is provided between the duct plate 7 and the heat insulating wall 2. The lower part of the duct 8 communicates with the cold air suction port 8a at the lower front end of the heat insulating wall 2,
The upper end of the duct 8 communicates with the cool air discharge port 8b located at the upper part of the open showcase 1. Further, blowers 9 (two in this embodiment are provided) are arranged in the duct 8 inside the cool air discharge port 8b.
Is operated, the cool air is sucked from the lower cool air suction port 8a and discharged to the upper side of the open showcase 1 through the cool air discharge port 8b.

In the electric circuit of FIG. 2, the fluorescent lamps 18 ... Are connected in parallel to the commercial AC power source 23 through the fluorescent lamp switch 19 by wiring 25. Each has a glow starter 20
And the ballast 21 is connected. The motors 22 and 22 of the blowers 9 and 9 are connected to the connection points 26 in the latter stage of the fluorescent lamp switch 19 by the wirings 24 and 24, whereby the blower 9 is connected to the commercial AC power source via the fluorescent lamp switch 19. 23 is configured to be supplied with power. Reference numeral 22a is an operating capacitor of the motor 22.

The operation of the above configuration will be described below. When the open showcase 1 is installed and the cooling device is operated, the cooler 13 cools the cool air to blow the fan 1.
4 is discharged from the discharge port 11 as described above, but a part of it is leaked to the outside of the storage chamber 5 without being sucked from the suction port 12, and on the outer floor of the suction port 12, that is, in front of the cool air suction port 8a. A cold air pool 30 is formed.

Next, when the employee closes the fluorescent lamp switch 19 when the supermarket opens, each fluorescent lamp 18 ...
The glow starter 20 and the ballast 21 turn on the fluorescent lamps 18 ... Related fluorescent lamp 18 ...
The lights on the shelves 16 in the storage room 5 are brightly illuminated.

On the other hand, when the fluorescent lamp switch 19 is closed, the motors 22, 22 of the blowers 9, 9 are also energized, and the blowers 9, 9 are operated. When the blowers 9 are operated, as described above, the cool air in the cool air reservoir 30 is sucked and collected from the cool air suction port 8a in the lower portion, passes through the duct 8, and is discharged above the open showcase 1 from the cool air discharge port 8b in the upper end. , Spread throughout the store. As a result, the formation of the cold air pool 30 is prevented or suppressed, and the inconvenience that the customer's feet and body are cooled to impair his health and that the willingness to purchase the product is impaired is eliminated.

Next, when the employee opens the fluorescent lamp switch 19 when the store is closed, the fluorescent lamps 18 ... Are de-energized and turned off, but at the same time, the blowers 9 and 9 are also de-energized. , 9 also stop. Here, since the customer does not exist in the store when the store is closed, the cold air pool 30 may exist. Moreover, since the opening 10 is normally closed by a night cover (not shown), cold air leakage is reduced. Therefore, there is no problem even if the blowers 9 and 9 are stopped, and conversely, unnecessary operation is prevented, so that power consumption is reduced and the life of the blowers 9 and 9 is extended. .

In particular, by opening and closing the fluorescent light switch 19,
Since the blowers 9 and 9 are operated / stopped in conjunction with turning on / off of the fluorescent lamp 18, ..., it is not necessary to provide a special switch for the blower 9, and the number of parts and the cost can be reduced. Since the operation control of the blowers 9, 9 can be performed only by operating the fluorescent lamp switch 19, operability does not deteriorate.

In the embodiment, the motor 22 of the blower 9 is connected in parallel with the fluorescent lamp switch 19 for turning on / off the fluorescent lamp 18, but a power source different from the fluorescent lamp 18 (for example, a fluorescent lamp). 18 is 200V, blower 9 is 10
The motor 22 of the blower 9 is connected to 0 V or a DC power source, etc., and the blower 9 is opened and closed by a relay coil whose energization is controlled by the fluorescent lamp switch 19.
It is safe to control the power supply to the.

Further, in the embodiment, the motor 2 of the blower 9 is driven by a dedicated fluorescent lamp switch 19 for turning on / off the fluorescent lamp 18.
Although the energization of the fan 2 is controlled, the energization of the motor 22 of the blower 9 may be controlled by a switch that controls the energization of the entire open showcase 1 including the fluorescent lamp 18. Further, although the fluorescent lamp 18 is used as the illumination lamp in the embodiment, the present invention is not limited to this, and an incandescent lamp or the like may be used.

[0021]

As described in detail above, according to the present invention, the operation of the blower for sucking up the leaked cool air accumulated on the floor outside the suction port is linked to the lighting / extinguishing of the illumination lamp. Only by operating the control switch, it is possible to operate the blower when the customer is present in the store when the store is open and to stop the blower when the store is closed when there is no customer. Therefore, since it is possible to prevent unnecessary operation of the blower without providing a special switch, it is possible to reduce power consumption, reduce the number of parts, and significantly improve operability. is there.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an open showcase of the present invention.

FIG. 2 is an electric circuit diagram related to a fluorescent lamp of the open showcase of the present invention.

[Explanation of symbols]

 1 Open Showcase 2 Heat Insulation Wall 5 Storage Room 6 Air Duct 7 Duct Plate 8 Duct 8a Cold Air Suction Port 8b Cold Air Discharge Port 9 Blower 10 Opening 11 Discharge Port 12 Air Suction Port 15 Air Curtain 18 Fluorescent Light 19 Fluorescent Light Switch 30 Cold Air Collection

Claims (1)

[Claims] 1. An illumination lamp for illuminating the inside of the storage chamber while forming cool air through the discharge port at the upper end of the front face of the storage chamber and sucking the cool air through the suction port at the lower end of the aperture to form an air curtain at the opening. In the attached open showcase, a switch for controlling lighting and extinguishing of the lighting is provided, and a blower for sucking up leaked cool air accumulated on the floor outside the suction port is provided upward, and operation of the blower is performed by lighting the lighting. -Open showcase characterized by being linked to the lights out.