JPS6038136Y2 - open case - Google Patents

Description

[Detailed description of the invention] This invention relates to an open showcase that forcibly circulates cold air that has undergone heat exchange with a cooler and closes the opening for taking out products. To reduce the amount of outside air entering from the left and right sides of the opening by blowing out from the rack hole along the side wall of the main body into the refrigerator compartment.

Conventionally, in open showcases, the cold air that has been heat exchanged in the cooler is forced to circulate to close the front opening for taking out products, and the cold air is blown from the back of the refrigerator compartment to the front opening. Since rack holes are formed at the ends to support the display shelves, the blowing surface of the cold air is restricted by these rack holes, and as a result, the cold air hits the products stored and displayed in front of the rack holes. This makes the cooling effect of the product that much worse.

In addition, the flow of cold air in front of the rack holes at both end portions has a slightly negative pressure due to the influence of the blowout from other parts, resulting in the inconvenience that outside air enters from the openings along the inner surface of the side wall of the main body.

In order to eliminate the above-mentioned drawbacks, the present invention blows cold air forward from the rack holes that support the shelves, and this blowing flow prevents the outside air from entering as described above.

An embodiment of the present invention will be described below with reference to the drawings. 1 is an open showcase whose main body is composed of a heat insulating wall having left and right side walls, and an opening 2 for taking out products is formed in the front side;
Further, doors 4, 4 for storing products are provided on the back wall 3 so as to be openable and closable.

A blowout port 5 for circulating cold air is formed at the upper end of the opening 2, and a suction port 6 is formed at the lower end.The refrigerator compartment 7 formed inside the opening 2 is provided with brackets 8, 8, . . . A plurality of shelves 9, 9, . . . to be held are placed.

A cold air flow passage 13 is formed between the inner ceiling wall 11 having holes 10, 10, curved holes formed above the refrigerator compartment 7, and holes 14, 14, . . . It is partitioned vertically by a rectifying plate 15, and laterally partitioned by a partition plate 16 disposed from the rectifying plate 15 to the air outlet 5, and is divided into upper and lower passages.

The upper passage is equipped with a heating element 17 such as an electric heater and serves as a protective airflow passage 18, and the lower passage serves as a cold airflow passage 19. The cold airflow flowing from the cold airflow passage 13 is divided into a protective airflow and a cold airflow. The air is divided into two parts and blown out from the air outlet 5, and closes the opening 2 as an air curtain.

The cooling chamber 20 formed below the refrigerator compartment 7 is equipped with a cooler 22 equipped with a heating element 21 such as an electric heater, and a blower 23. The air is sucked into the room through the suction port 6 and is turned into a cold air flow by the cooler 22.

24.24 is a duct which doubles as a shelf support installed on the back wall 3 on the side of the refrigerator compartment 7, and a plurality of through holes 25, 25... are bored in the front wall which becomes the back wall of the refrigerator compartment 7. In addition, shelves 9, 9, .
. . . Rack holes 26, 26 .

The ducts 24, 24 constitute a cold air circulation path together with the cold air flow path 13 and the cooling chamber 20, and a portion of the cold air flowing from the cooling chamber 20 passes through the through holes 25, 25...
The air is blown into the refrigerator compartment 7 from the rack holes 26 and 26, and the remaining air is led to the cold air flow path 13.

27 is a support installed between the ducts 24.24, and on its front wall are brackets 8.8 for mounting shelves 9, 9...
...Multiple rack holes 28, 28 for insertion are drilled,
The inside is hollow to provide a passage 29 for cool air flow.

This support column 27 communicates the cold air flow passage 13 with the cooling chamber 20 and supports the shelves 9, 9, etc., and serves to absorb a portion of the cold air flowing from the cooling chamber 20. aisle 29
from the refrigerator compartment 7 through the rack holes 2B, 28...
The cold air is blown out to the cold air flow path 13, and the rest is guided to the cold air flow passage 13.

30.30... is a partition plate attached to the shelves 9, 9... to partition the gap created between the shelves 9, 9... and the doors 4, 4. The holes 10, 10 in the inner ceiling wall 11 and the through holes of the ducts 24, 24.
......, rack hole 26.26..., pillar 2
A part of the cold air flow blown into the refrigerator compartment 7 from the rack holes 28, 28 of the shelves 9, 9, . This is provided to prevent the cooling efficiency from decreasing during this period.

In the open showcase 1 of the present invention, the cold air flow and the protective air flow circulate as follows.

The cold air flow cooled by the cooler 22 is forced to circulate through the cold air flow circulation path and the opening 2 by the blower 23, and is branched from the cooling chamber 20 to the ducts 24, 24 and the struts 27 along the way.

A portion of the cold air flow flowing through the duct 24.24 passes through the through hole 25,
25... and rack hole 26.26...
It is blown out into the refrigerator compartment 7 from the air curtain and joins with the cold air flow of the air curtain forming phase that closes the opening 2.
3.

Further, a part of the cold air flowing through the passage 29 formed in the support column 27 is blown out into the refrigerator compartment 7 through the rack holes 28, 28, . . . , and the other part flows into the cold air flow passage 13.

A part of the cold air flowing into the cold air flow passage 13 is transferred to the inner ceiling wall 1.
The remaining air is blown into the refrigerator compartment 7 through the holes 10, 10, . The air is blown out from the outlet 5 as a protective airflow and a cold airflow, respectively, to form an air curtain, closes the opening 2, is sucked into the cooling chamber 20 through the suction port 6, is cooled again by the cooler 22, and circulates through the above-mentioned path.

As mentioned above, in this invention, the cold air is blown into the refrigerator from the rack holes for supporting the shelves along the side wall of the main unit, so there is no negative pressure generated in front of the rack holes as in the conventional case. The entrainment of outside air along the inner surface of the side wall is eliminated, and the amount of intrusion of outside air, that is, the refrigeration load, can be reduced accordingly, so that cooling efficiency can be improved.

[Brief explanation of the drawing]

Figure 1 is a front view showing an embodiment of the open showcase of the present invention, Figure 2 is a sectional view taken along line A-A' in Figure 1, and Figure 3 is a cross-sectional view of the
FIG. 13-B' is a sectional view. 2...Opening, 7...Refrigerating room, 9,9.
...Shelf, 24.24...Duct, 25,
25...Through hole, 26.26...Rack hole.

Claims (1)

[Scope of utility model registration request] The main body is composed of an insulating wall having left and right side walls and an opening for taking out products in the front, and a cold air circulation path in which a cooler and a blower are installed in the space surrounded by the insulating wall, and a plurality of walls. In an open showcase formed of a refrigerator compartment with shelves and an air curtain formed by a forced circulation cold air flow in the opening, a cold air flow is directed toward the refrigerator compartment in a portion of the back wall of the refrigerator compartment near the side wall. An open showcase with a plurality of rack holes vertically formed to support the air balloons and shelves.