JPS6317982Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the mounting structure of a night cover in a refrigerated/refrigerated open show case in which a front opening for entering and exiting products is closed off with a cold air curtain.

When the refrigerated open storage case is not in use, such as at night or on holidays, the front side is installed to prevent outside air from entering the product storage area, and to prevent cold air from escaping from the storage area to the outside, increasing the cold storage effect. The opening is closed with a night cover.

By the way, in the conventional show case, the night cover 4 is made of vinyl with a large number of small holes 10, and as shown in FIG. A winding storage section 5 consisting of a winding storage section 5 is provided, and the winding device is pulled out from the winding storage section 5.

However, if a product storage bag hanger 6 or the like is attached to the top or front surface of the decorative panel 3, this will get in the way and the night cover 4 will not close properly.

Therefore, as shown in FIG. 2, the above-mentioned inconvenience can be solved by providing a storage section 5 for the night cover 4 inside the decorative panel 3.
The storage part 5 is located closer to the cold air outlet 7 than in the case shown in the figure, and the night cover 4 is pulled out to a position immediately before the cold air curtain 8 that closes the front opening 2. In this case, the pressure difference between the space 18 sandwiched between the night cover 4 and the air curtain 8 and the outside of the refrigerator becomes extremely large.

On the other hand, a large number of night covers 4 are arranged side by side to close the opening, but as shown in FIG. 3, there is a gap W ₁ in order to prevent adjacent ones from coming into contact with each other.

By the way, the air curtain 8 is a rectifying honeycomb 19
Due to this, there is a rectified laminar flow near the outlet 7,
Gradually, the volume increases while including outside air, and the air curtain width expands as it descends, is sucked in through the suction port 15, and circulated. However, by applying the night cover 4, the pressure inside the refrigerator becomes higher than that outside the refrigerator, as shown in Fig. 5. At that time, below the intersection 20 where the night cover 4 and the air curtain 8 intersect, the cold air is discharged from the small hole 10 of the night cover 4 to the outside of the refrigerator, and above the gap W ₁ is equal to the amount of the discharged air.
A space 18 where outside air containing a lot of moisture is sandwiched between the night cover 4 and the air curtain 8 and has a low pressure.
In this case, the narrower the space between the air curtain and the night cover, the lower the pressure and the greater the pressure difference with the outside air. It breaks through the air curtain 8 and reaches the wall inside the refrigerator, where condensation occurs. As a result, inconveniences such as products being soiled have occurred.

The purpose of this invention is to eliminate the above-mentioned inconvenience, to intentionally take outside air into the refrigerator and direct it to reduce the pressure difference between the outside and inside of the night cover surface, so that outside air does not rush into the refrigerator through the gap. Our objective is to provide a frozen and refrigerated open storage case.

However, according to the present invention, the purpose of the lever is to provide a cold air outlet above a front opening for loading and unloading products, and to close the front opening with a cold air curtain. This is achieved by providing a winding storage section for the night cover with a large number of small holes, with a gap for outside air intake at the upper end of the opening of the case body, and using the outside air taken in to artificially reduce the pressure difference. be done.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 4 is a longitudinal cross-sectional side view showing an embodiment of the refrigerated/freezer open case of the present invention, in which the same components as in FIGS. 1 to 3 showing the conventional example are given the same reference numerals.

The overall structure of the refrigerated freezer case is the same as the conventional example, with a front opening 2 for loading and unloading products.
A partition plate 12 divides the interior of the freezer/refrigerator case body 1 into a product storage 9 and a cold air circulation path 13, and a cooler 14 is disposed within the cold air circulation path 13. The upper and lower ends of 13 are formed as a cold air outlet 7 and an inlet 15, respectively,
The opening 2 is closed with a cold air curtain 8.

A decorative panel 3 is attached to the front end of the upper surface of the case body 1, and a top plate 17 inside the decorative panel 3 is attached.
The winding storage part 5 of the night cover 4 is attached with a hanging tool 11 so as to be spaced apart from each other by a certain distance. This hanging tool 11 is composed of a box, L-shaped or U-shaped bracket, etc., and is attached to the top plate 17 with a gap between them, and a gap _W2 is formed between the mounting height and the mutual spacing.

In this way, a gap W ₂ for intake of outside air is formed between the winding storage section 5 and the decorative panel ₃ at a position immediately above the outside of the cold air outlet 7. In order to maintain the necessary cold storage temperature and reduce the pressure difference between the inside and outside of the refrigerator, it is desirable to set the thickness to about 10 to 20 mm.

A night cover 4 having a large number of small holes 10 is stored in the winding storage part 5 in a drawable manner.

A plurality of the winding storage parts 5 are installed on the lower surface of the decorative panel 3, but in order to avoid mutual contact between the night covers 4 and to make drawing and pulling up smooth, there is a space between the winding storage parts 5 and the adjacent night covers 4. The storage section 5 is installed so that a slight gap _W1 is formed.

Although the above description has been made regarding the case where the cold air curtain 8 has a single structure, in the case of a case having a double structure cold air curtain 16 with a protective air flow 16b formed outside the cold air flow 16a as shown in FIG. In this case, the storage section 5 is installed so that the night cover 4 is pulled out to the outside of the protective airflow.

Next, to explain the operation and usage of the present invention, when using the frozen/refrigerated open show case, such as when opening a store, the night cover 4 is in the winding storage section 5, and the front opening 2 is closed with the cold air curtain 8. The inside of the storage 9 is kept cool.

When the case is not in use, such as at night or on holidays,
When the night cover 4 is pulled down from the storage section 5, the front opening 2 is closed by the night cover 4, but in this state, the night cover 4 is located just in front of the cold air curtain 8, and as a result, A large pressure difference occurs between the inside of the storage compartment 9 and the outside of the storage compartment in the vicinity of the night cover 4 as a boundary.

However, as shown in Fig. 6, by installing the night cover storage section 5 with a gap _W2 , the pressure difference between the outside of the refrigerator and the space 18 is reduced, and while the infiltration speed of outside air is slowed down, the outside air enters through the gap _W2 . The outside air descends directionally along the air curtain flow. At this time, since the gap W ₂ is formed at a position above the cold air outlet 7, there is no risk of cold air leaking outside from the gap W ₂ . Therefore, it serves the role of giving directionality so that the outside air that enters through the gap W ₁ between the night covers 4 also descends along the air curtain 8, so that the air curtain 8 is not pierced by the outside air that enters through the gap W ₁ . This prevents condensation from forming inside the warehouse and contaminating the products.

As described above, the open refrigerator case of the present invention has a gap for outside air intake formed at the upper position immediately outside the cold air outlet by the decorative panel and the winding storage part of the night cover. Since the outside air that is taken in descends with the cold air curtain, it does not rush into the refrigerator, preventing dew condensation inside the refrigerator.Also, by intentionally introducing outside air, the pressure difference between the inside and outside of the storage can be reduced and the inside of the refrigerator can be improved. The amount of cold air escaping can be reduced.

[Brief explanation of the drawing]

1 and 2 are longitudinal sectional side views of a conventional frozen/refrigerated open shower case, FIG. 3 is a perspective view of the same as above, and FIG. Figure 5 is a vertical side view of the main parts of a conventional freezer/refrigerator open show case, Figure 6 is a vertical side view of the main parts of the freezer/refrigerator open show case of the present invention, and Figure 7 is a vertical side view of another embodiment. It is a diagram. 1...Show case body, 2...Front opening,
3... Decorative panel, 4... Night cover, 5...
Winding storage section, 6...Storage bag hanger, 7...Cold air outlet, 8...Cold air curtain, 9...Product storage, 10...Small hole, 11...Hanging tool, 12...
... Partition plate, 13 ... Cold air circulation path, 14 ... Cooler, 15 ... Cold air inlet, 16 ... Double air curtain, 16a ... Cold air flow, 16b ... Protective air flow, 17 ... Top plate , 18...Space, 19...Honeycomb, 20...Intersection, W ₂ ...Gap, W ₁ ...Gap.

Claims (1)

[Scope of utility model registration request] In a refrigerated/freezer open case in which a cold air outlet is provided above a front opening for entering and exiting products and the front opening is closed with a cold air curtain, an outside air vent is provided at the upper end of the opening of the case body above the outlet. A refrigerated/refrigerated open storage case characterized by having a winding storage part for a night cover having a large number of small holes with necessary gaps.