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Changzhou Yuyan Refrigeration Equipment Co., Ltd.
Address:No. 134 Dailuo Road, Luoyang Town, Changzhou City, Jiangsu Province, PR China
Phone:0086-519-8879-0108 、0086-519-8879-0110
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Select suitable refrigerated door for cold room

Views: 55403/11/2020  

The cold storage door, also known as the refrigerated door for cold room, is one of the important facilities of the cold storage, is also the passage for the cold storage to get in and out of the goods, and is one of the important parts for the cold storage to run cold. Because of the temperature difference between the inside and outside of the cold storage, when the door of the cold storage is opened, the hot air will have strong convection through the door opening, resulting in the exchange of hot and humid air into the warehouse, increasing the heat load of the cold storage. This part of the heat load is usually called the cooling capacity or cooling loss of the opening door. When opening the cold storage door, the hot air volume entering the cold storage is related to the height and width of the door, the temperature difference inside and outside the cold storage, and of course, the time and times of opening the door. For energy saving, the number of cold storage doors should be controlled as much as possible and the size of the door opening should be reduced as much as possible.

refrigerated door for cold room

Refrigerated door for cold room with quick opening and closing operation shall be selected, and air curtain shall be set. Some manufacturers don't pay attention to the management of the refrigeratory door. Some refrigerators sometimes send out one or two goods, open the door and push a small cart to get the goods, and then close the door when they leave the warehouse. Sometimes the forklift loads the goods and opens the door to enter the warehouse, and closes the door when the goods are loaded and unloaded. This time difference is long, so the heat exchange at the refrigeration door should be minimized, the warehouse door should be closed in time, and the cooling consumption of the door should be reduced as much as possible. At the same time, if a large amount of hot and humid air enters the warehouse due to poor management, it will increase the thickness of the frost layer of the evaporator, reduce the refrigeration efficiency, indirectly increase the number of defrosting and increase the energy consumption. Therefore, for the economic and effective operation of cold storage, cold storage door is one of the key factors. At present, there are mainly the following forms applied to the cold storage gate in China:

1) Early wooden frame cold storage door. This kind of cold storage door is manual mode, most of which are LM1 ~ lm4 models. Some of the original refrigerators are still in use. Some refrigerators have been changed to a new type.

2) Common electric single open refrigerator door. At present, this kind of door is widely used in most new refrigerators.

3) Common electric double opening refrigerator door. The price of this kind of refrigerator door is relatively high, so it is not widely used. No matter whether it is a single open electric refrigerator door or a double open electric refrigerator door, there are usually inner door buckets in the refrigerator, and the PVC curtain is set.

4) Roller shutter plus electric refrigerator door. This kind of setting is to use fast-rolling curtains outside the warehouse (some with or without insulation, and the lifting speed is 1.2 ~ 2.5m/s), which can be opened by geomagnetism, radar, remote control or pull rope, and ordinary electric cold storage doors are installed inside the warehouse. In the process of goods in and out, the electric door is always open, the inside and outside of the warehouse are separated by fast-rolling curtains, and the cold storage door inside the warehouse is closed after the goods in and out. This method is suitable for refrigerated warehouses with frequent incoming and outgoing goods.


After using for some time, the old refrigerated door often deforms, is not closed tightly, and produces the phenomenon of running cold and frosting. At present, many old refrigerators use fir door frame (door frame) external stick type refrigeratory door, which has many forms, such as flat opening, push-pull and electric, etc. At present, the new type of electric (manual) refrigerator door with anti-freezing electric heating is widely used in the new refrigerator. The new cold storage door is made of polyurethane with high pressure, which has good heat preservation and insulation performance. The door switch is provided with pull wire, button, remote control, and manual mode. This type of cold storage door is light, flexible in use, good in sealing and convenient in maintenance. The new type of cold storage door is generally single leaf electric (manual), which is not easy to run cold and has a good effect and has been widely recognized by the enterprise community.

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