JPS5838956Y2 - cooling box body - Google Patents

Description

[Detailed description of the invention] This design concerns a cooling box with forced cold air circulation, in which products are taken out from the front of the main body and stored from the back.In addition to preventing freezing of the duct plate installed in the door, the cold air passage when the door is closed is The purpose is to prevent pressure drop in

Conventionally, in this type of cooling box body, the cooled duct plate comes into contact with the outside air every time the door is opened, so moisture in the outside air adheres to the duct plate as frost, and this frost grows and turns into ice blocks, causing the door body to break down. This not only obstructs the opening/closing operation, but also causes the storage capacity of the storage room to become narrower due to ice blocks that form on the side of the storage room where the duct plate has little contact with cold air when the door is closed. As a large amount of cold air leaks from the gap between the opening and the end surface, the pressure of the cold air passing through the cold air passage decreases, causing disturbances in the air curtain formed at the front opening for product removal, and reducing the amount of outside air entering the storage room. In addition, there were drawbacks such as a portion of the storage chamber being locally cooled by the cold air flowing through the gap.

This proposal was made in view of the above drawbacks, and its embodiments will be explained below with reference to FIGS. A cooling box body such as a refrigerated showcase whose main body is constituted by a heat insulating wall 2 formed with an opening 4 for storing goods, and a compartment formed with an opening 6 facing the opening 4 for storing goods. A cooler 7 is constructed by disposing a plate 5 at an appropriate distance from the inner wall of the heat insulating wall.
, a cold air passage 9 in which a blower 8 is installed, a storage room 11 having a plurality of shelves 10, an air outlet 12 located at the upper end of the opening for taking out the product, and a suction port 13 located at the lower end, By operating the cooler 7 and the blower 8, cold air is circulated as shown by the arrows in FIG. 3 to form an air curtain in the opening 3 for taking out products and to cool the storage chamber 11.

Reference numeral 14 denotes a rotatable heat insulating door body attached to the back wall of the heat insulating wall by a hinge 15, which is equipped with a handle 16 for opening/closing and a seal 17 for maintaining airtightness, and closes the opening 4 for storing goods so as to be openable and closable. It is something.

18 is a duct plate attached to the door body, and the front wall 18
a and left and right side walls 18b, 18b, the cross section has a substantially U-shape, and when the door body 14 is closed, the front wall 18a touches the six ends of the opening of the partition plate 5, covering the opening, and is connected to the door body 14. A flow path 19 communicating with the cold air passage 9 is formed therebetween.

Reference numeral 20 denotes a heat insulating plate made of foamed polyethylene or the like attached to at least the side surface of the flow path of the front wall 18a of the dust plate;
8a to prevent the temperature of the cold air passing through the flow path 19 from decreasing.

21 is a plurality of columns supporting the tank; 22 is a plurality of ducts formed by the partition plate 5, a partition plate 5a arranged behind the partition plate, and the columns; the columns and the ducts are This is provided to make the entire back area of the storage chamber 11 in addition to the flow path 19 a passage for cold air, so that there is no imbalance in the wind speed distribution of cold air from the lower cold air passage 9a to the upper cold air passage 9b. Make the distribution uniform.

Reference numeral 23 indicates both sides of the heat insulating wall 2 (only one side is shown).

).

According to the above configuration, when the door body 14 is closed, the front wall 18a of the duct plate 18 is located at the 6th open end of the partition plate 5, and the 6th open end of the duct plate 18 where cold air passes through the cold air passage 9 almost disappears. , pressure drop in the cold air passage 9 can be prevented.

Therefore, it is possible to prevent the disturbance of cold air due to a decrease in the wind speed of the air curtain formed in the opening 3 and the intrusion of outside air due to the disturbance, and also to prevent local cooling due to leakage of cold air, and to maintain the temperature distribution in the storage room 11 in a normal state. .

Furthermore, by providing the heat insulating plate 20 on the flow path side of the duct plate 18, vibration of the duct plate 18 caused by wind pressure of cold air can be prevented, and when the door is closed, the cold air passing through the flow path 19 on the front wall 18a of the duct plate 18 can be prevented. In other words, the front wall 1
Since heat conduction to the front wall 18a can be prevented by the heat insulating plate 20 so that the temperature does not fall below the dew point temperature of the duct plate 8a, it is possible to prevent frost from adhering to the duct plate 18 when the door is opened.

Therefore, the door body 14 can be opened and closed smoothly, and the storage volume of the storage chamber 11 can be prevented from being reduced due to the formation of ice blocks.

FIG. 4 shows an embodiment of the present invention, and by providing a gasket 24 at the six ends of the opening of the partition plate 5, the impact on the duct plate 18 when the door is closed can be alleviated, and at the same time, the six ends of the opening can be reduced.

As described above, the main body of the present invention is composed of an insulating wall formed with an opening for taking out products in the front and an opening for storing products in a part of the back wall, and the main body is formed with an insulating wall that faces the opening for storing products. A partition plate formed with an opening is placed at an appropriate distance from the inner wall of the insulating wall to form a cold air passageway in which a cooler and a blower are installed, and a storage room having shelves, and products are stored in the back wall. A rotatable heat insulating door body is provided to freely open and close the opening for the purpose of cooling, and when the door body is closed, the door body is in contact with the opening end surface of the partition plate to cover the opening, and the cold air passage is provided between the door body and the door body. The present invention is characterized by providing a duct plate forming a flow path communicating with the duct plate, and providing a heat insulating plate on the side of the flow path of the duct plate. It prevents frost formation and allows for smooth storage of products from the back of the main unit.It also prevents pressure shields in the cold air passage due to leakage of cold air between the duct plate and the partition plate, making it possible to improve the storage room. A predetermined temperature can be maintained.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an embodiment of the cooling box body of the present invention, Figure 2 is a sectional view taken along line AA' in Figure 1, Figure 3 is a sectional view taken along line BB' in Figure 1, and Figure 4 is a sectional view taken along line BB' in Figure 1. FIG. 2 is a vertical cross-sectional view of main parts showing an embodiment. 5... Division board, 9... Cold air passage, 14
......Door body, 18...Duct plate, 19.
...Flow path, 20...Insulation board.

Claims (1)

[Scope of utility model registration request] 1. The main body is composed of an insulating wall formed with an opening for taking out products on the front and an opening for storing products on the back wall, and a partition plate formed with an opening opposite to the opening for storing products is insulated. A cold air passageway in which a cooler and a blower are installed and a storage room having shelves are arranged at an appropriate interval from the inner wall, and an opening for storing goods is closed in the back wall so as to be openable and closable. A duct comprising a rotatable heat insulating door body, the door body contacts the opening end surface of the partition plate when the door is closed, covers the opening, and forms a flow path communicating with the cold air passage between the door body and the door body. A cooling box body comprising a plate and a heat insulating plate provided on the side surface of the flow path of the duct plate. 2. The cooling box according to claim 1, which is characterized in that a gasket is provided on at least one of the opening end face of the partition plate and the duct plate.