JPH0996486A - Open show case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent entrance of outside air by closing a gap provided between night covers with which the front release part of an open show case is covered and to relieve the load of the show case. SOLUTION: During drawing of a plurality of night covers 9 and 9, a short night cover 10 with which a gap C between adjoining night covers 9 and 9 is covered is arranged. The draw hook positions of shield curtains 10N and 9N wound in a roll so that during drawing of a short night cover 10 and a plurality of night covers 9 and 9, the shield curtains 10N and 9N approach each other are arranged in such a state to be situated between the winding central axes of the two night covers 10 and 9. This constitution closes the gap C and prevents the occurrence of phenomenon wherein cold air is sucked in a chamber through a gap between the shield curtains of the night covers due to a negative pressure in a cooled case chamber.

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 surface of a casing is opened to form a product inlet / outlet, and more specifically, it is used for displaying frozen / refrigerated food products in a food store or the like. It relates to a structure of a night cover that is more energy-saving in a freezing / refrigerating open showcase.

[0002]

2. Description of the Related Art In a self-service food store such as a supermarket, a frozen / refrigerated open showcase as shown in FIGS. 3 and 4 is used for displaying refrigerated food and fresh food.

The open showcase 51 has a plurality of shelves 53, 53 provided in a casing 52, for example.
... A product such as food is placed thereon, and cool air is rectified and blown out as an air curtain from the cool air outlet 54 provided at the upper part to the lower side of the casing 52 to form the lower exterior of the front opening of the casing 52. Cold air intake 55 provided in
The cool air is sucked from the inside of the casing 52 and the cool air is sent to the evaporator for cooling from the lower part of the duct 57 provided between the casing 52 and the inner panel 56 by the blower fan, and the products in the casing 52 are cooled by the continuation of this cycle. ing.

The upper front end of the casing 52 is covered with a canopy 58 which serves as a ceiling exterior, and a canopy illumination 59 is disposed below the canopy 58. The light from the canopy illumination 59 is reflected by a canopy top plate 58a to store the inside of the cabinet. Is evenly illuminated. Further, in front of the cool air outlet 54, there is formed a nosing portion 60 which is continuous with the canopy top plate 58a and serves as a front cover, and a night cover 62 having a roll-shaped shielding curtain 62N immediately in front of the front wall of the nosing portion 60. When the store is worn and the store is closed at night, the shielding curtain 62N is pulled out to cover the opening of the showcase 51 to reduce the load on the showcase.

[0005]

By the way, as shown in FIG. 3, the shielding curtains 62N and 62N wound in a roll form are 3 shaku (about 90 cm) to 4 shaku (about 90 cm) in consideration of ease of opening and closing. It is manufactured with a frontage size of about 120 cm, and the night covers 62, 62 are attached to the showcase in a straight line in series. Therefore, there is a structural limitation of the night covers 62, 62, and the shielding curtains 62N, 6 of the adjacent night covers are
A gap C of 10 to 20 mm was generated between 2N. For this reason, the inside of the showcase has a negative pressure, and when the night cover shielding curtains 62N and 62N are shielded at night, outside air is sucked into the inside of the compartment through the gap C, and the energy saving rate is high for meat and fresh fish. For use, it was only 20 to 28% compared to when the night cover was not used.

Therefore, the present applicant previously filed Japanese Patent Application No. 7-83.
No. 383 proposes a means for overlapping the ends of the shielding curtains of the adjacent night covers 62, 62 to close the gap C. With this means, overlapping is performed after the showcases are connected on site. It takes time and effort to adjust the dimensions. Further, in the existing store of the above-mentioned conventional showcase to which the night cover is attached, it is not possible to change the body structure of the showcase in order to cover the gap C of the night cover. Is very difficult to install.

The present invention has been made in view of the above circumstances, and an object thereof is to easily save energy for a showcase already delivered to an existing store without modifying the showcase body. It is an object of the present invention to provide a structure of a night cover capable of covering the gap C between the night covers for the purpose of enhancing the effect.

[0008]

In order to achieve the above object, in the present invention, an air curtain of cold air is formed in a front opening of a casing from a cool air blowout port at an upper part toward a cool air intake port at a lower part, In an open showcase provided with a plurality of night covers that cover the front of the air curtain when not operating, while keeping the temperature of the products displayed in the warehouse at a constant temperature, when the plurality of night covers are pulled out, the space between adjacent night covers is increased. It is characterized by the installation of a short night cover to cover the gap that occurs in the. And
In particular, the short night cover and the plurality of night covers that cover the front of the air curtain have the pull-out hook positions of the shielding curtain wound in a roll shape so that the shielding curtain surfaces are close to each other when pulled out. It is characterized in that it is placed so as to be located between the winding center axes of the night cover.

This short night cover may be arranged on the rear side of the plurality of night covers covering the front of the air curtain, but it is preferable to arrange the short night cover on the front side because it is easy to pull out. When both night covers are pulled out, the shielding curtain surfaces both approach the center of the winding axis, so when viewed from the cross-sectional direction (lateral direction), the shielding curtains move in the opening (separation) direction. In the overlapping parts of both night covers, some dew condensation occurs due to the stagnation of the curtain surface air (because the inside pressure of the refrigerator becomes negative during cooling), so both shield curtain surfaces are surely in contact with or close to each other. To do.

Therefore, if such a short night cover is used, the gap between the adjacent night covers provided with the existing night cover can be closed by a simple mounting operation. With this short night cover, there is no gap between the shielding curtains of the night cover, and when the night cover is shielded (non-business hours), the night cover is shielded due to the negative pressure inside the cooled showcase. It is possible to prevent the outside air from being sucked into the cabinet through the gap between the curtains as much as possible. It is made of the same material as the conventional night cover and at the same cabinet temperature condition as the conventional showcase, it is about 3 times more than when the night cover is not used.
An energy saving effect of 9 to 48% can be achieved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an overall perspective view of an open showcase including the night cover of the present invention, and FIG. 2 is a side view of a main part.

In this open showcase 1, products such as foods are placed on a plurality of shelves 3, 3 ... Provided inside a casing 2 of a casing 2, and cool air is blown from a cool air outlet 4 provided at the upper portion. As a curtain, the air is rectified and blown out below the casing 2, and the cold air is sucked from a cold air suction port 5 provided on the rear surface of an upper rail that is a lower exterior of the front opening of the casing 2, and is provided between the casing 2 and an inner panel. Cool air is sent from the lower part of the duct to the evaporator for cooling by a blower fan, and the products in the casing 2 are cooled by the continuation of this cycle.

The upper front end of the casing 2 is covered with a canopy 6 serving as a ceiling exterior, and a canopy illumination 7 is arranged below the canopy 6 and the light of the canopy illumination 7 is reflected by a canopy top plate 6a to make the inside of the cabinet uniform. I try to illuminate it.
Further, in front of the cool air outlet 4, there is formed a nosing portion 8 which is connected to the canopy top plate 6a and covers the front portion thereof, and a roll-shaped shielding curtain 9N, 9N is provided immediately in front of the front wall of the nosing portion 8. The scale night covers 9, 9 are attached. This night cover 9 is a cover curtain 9 during non-business hours such as at night.
N is pulled out to cover the opening of the showcase 1 to reduce the load on the showcase.

The short night cover 10, which constitutes the subject matter of the present invention, closes the gap C of about 10 to 20 mm formed between the pulled-out shield curtains 9N, 9N, so that the long night cover 9, 9 is formed. It is installed on the near side. This short night cover 10 is obtained by winding a shielding curtain 10N around a winding shaft 10X attached to both end casing ends 10b of a night cover casing 10a.
A hook 10c for pulling out and hooking is provided at the tip.
In addition, the winding shaft 10X has a spring incorporated therein to adopt an automatic restoration type winding system. Long night cover 9
Also has a similar configuration. Then, as shown in detail in FIG. 2, the long night cover 9 is housed in a recess 8a formed by deeply bending the upper part of the front wall of the nosing portion 8 toward the cool air outlet 5 side, and the nosing is performed by a screw or the like. It is fixed to the front wall of the part 8. Further, the short night cover 10 is fixed to the canopy top plate 6a by a screw or the like at the front position so as to cover the gap C between the long night covers 9 and 9.

Both night covers 9 arranged in this way,
10, so that the surfaces of the shielding curtains 9N, 10N are closest to each other when pulled out, so that the pull-out hooks 9c, 10c of the shielding curtains 9N, 10N are positioned between the winding shafts 9X, 10X of both night covers. It is located in. That is,
Long night cover 9 when viewed from the front of the showcase
The shield curtain 9N is pulled out from the front side, and the shield curtain 10N of the short night cover 10 is pulled out from the rear side. When the both night covers 9 and 10 are pulled out, both the shielding curtains 9N and 10N are both wound on the winding shaft 9
Since it approaches the X and 10X centers, when viewed from the cross-sectional direction (lateral direction), the shielding curtains 9N and 10N move in the direction of opening (separating), but in reality, both long and short night covers 9 and 10
A slight amount of dew condensation occurs in the overlapping portion due to the stagnation of the curtain surface air, and since the inside of the refrigerator has a negative pressure during cooling, the two shielding curtains 9N and 10N are surely in surface contact with or close to each other. The front and rear mounting positions of the short night cover 10 and the long night cover 9 can be changed as desired.

Shielding curtains 9N, 1 of both night covers 9, 10
0N material is transparent nylon or vinyl chloride film,
Alternatively, an aluminum woven cloth or a polypropylene resin film having a heat insulating and ventilation effect may be used.

By using such a short night cover 10, the gap C between the adjacent night covers 9 and 9 provided with the existing night cover can be closed by a simple mounting operation. Then, the short night cover 10 covers the gap C between the shielding curtains of the night cover, and when the night cover is shielded (at the time of non-business), it is caused by the negative pressure in the cooled showcase compartment. It is possible to prevent the outside air from being sucked into the cabinet through the gap C between the shielding curtains of the cover as much as possible, using the same material as the conventional night cover and the same temperature condition as the conventional showcase, and when the night cover is not used. In comparison, the energy saving was about 39 to 48%.

[0018]

Since the present invention is constructed as described above,
It is possible to save energy by covering the gap created between the conventionally installed night covers with a short night cover to prevent outside air from entering and reducing the load on the showcase during non-business hours. In particular, if the short night cover of the present invention is used, even for a showcase already delivered to an existing store, it is possible to easily enhance the energy saving effect without modifying the showcase main body, and between the night covers. The gap can be covered and the installation work is easy.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an open showcase using a short night cover of the present invention.

FIG. 2 is an enlarged side view showing a main part of the present invention.

FIG. 3 is an overall perspective view of a conventional open showcase.

FIG. 4 is a sectional side view of a conventional showcase.

[Explanation of symbols]

 1 Open showcase 2 Casing 3 Shelf plate 4 Cold air outlet 5 Cold air inlet 6 Canopy 6a Canopy top plate 7 Canopy lighting 8 Nosing part 9 Long night cover 9c Hook 9N Long night cover screen 9X Winding shaft 10 Short Night Cover 10a Night Cover Casing 10b Casing End 10c Hook 10N Short Night Cover Shielding Curtain 10X Winding Shaft C Gap

Claims (2)

[Claims] 1. An air curtain of cold air is formed at a front opening of a casing from an upper cool air outlet toward a lower cold air suction port to keep a temperature of goods displayed in a warehouse at a constant temperature, and at the time of non-business hours. In an open showcase with a plurality of night covers that cover the front of the air curtain,
An open showcase, wherein a short night cover is installed to cover a gap generated between adjacent night covers when the plurality of night covers are pulled out. 2. A pull-out hook for a shield curtain wound in a roll shape such that the short night cover and a plurality of night covers covering the front of the air curtain are arranged so that their shield curtain surfaces are close to each other when they are pulled out. The open showcase according to claim 1, wherein the position is arranged between the winding center axes of both night covers.