吊顶式冷风机优点是具有传热效果好、不占用冷库使用面积，在冷库速冻、冷却间使用较多。

The utility model has the advantages that the heat transfer effect is good, the cold storage area is not occupied, and the utility model is used more frequently in cold storage and freezing and cooling rooms.

管组由无缝钢管外绕翅片制成。下部管组翅片间距稍大，避免回风湿度大时翅片间被霜阻塞。上部管组翅片间距稍小，以便增加传热面积。制冷剂液体从管组下部进入，蒸发后制冷剂气体从管组上部被压缩机吸入。

The tube group is made of seamless steel tube winding fins. The fin spacing of the lower tube group is slightly larger, so that the fins are blocked by frost when the return humidity is large. The fin spacing of the upper tube set is slightly smaller in order to increase the heat transfer area. The refrigerant liquid enters from the lower part of the tube group, and the refrigerant gas is sucked into the upper part of the pipe assembly by evaporation after the evaporation.

冷风及配用的通风机有轴流式和离心式两种。轴流式通风机结构简单，使用可靠，维护方便，价格低廉，但是其噪音较大，风压不能太高。离心式通风机的风压较高，运转时噪音较低，但是其结构复杂，操作维护技术要求较高，价格相对也高，除在一宿特殊场合采用外，现已很少使用。

There are two kinds of fan and axial fan and axial type and centrifugal type. Axial fan has the advantages of simple structure, reliable operation, convenient maintenance and low price, but its noise is too high and the wind pressure can not be too high. The centrifugal fan has higher wind pressure and lower noise during operation, but its structure is complex, the operation and maintenance technology requirements are high, and the price is relatively high, and it is seldom used except for the special occasions in one night.

管组之上还装有冲霜淋水管，当用热氨冲霜时，同时在管组外喷淋水，使管外积结得霜层很快被冲除。冷风机的 上层是风机室，风机室有一定的高度，使通过翅片管的风速趋于均匀。冷风机的 下部装有盛水盘，承接了呢过我却管组上的凝结水和冲霜水。

On the upper part of the pipe set, there is also a frost spray water pipe. When hot ammonia is used to spray frost, water is sprayed outside the tube group, so that the outer layer of the pipe is deposited so that the frost layer is quickly washed away. The upper air cooler is a blower room, and the fan chamber has a certain height, so that the wind speed through the fin tube tends to be uniform. The lower part of the air cooler is provided with a water holding tray, and the condensed water and the frost water which are passed through the tube are taken.

吊顶式冷风机的蒸发管组和落地式冷风机基本相同，管组上面装有冲霜用淋水盘，管组下面有承接冲霜水的盛水盘。吊顶式冷风机配用轴流式通风机，安装在和蒸发管组的一侧，运转时通风机迫使空气通过管组降低温度，然后由出风口送至库房各处。

The evaporating tube set of the ceiling type air cooler is basically the same as the floor type air blower, and the pipe group is provided with a water spraying tray for defrosting, and the water holding plate is provided below the pipe set to carry the frost water. The ceiling air cooler is equipped with an axial flow fan installed on one side of the evaporating tube group. When running, the fan forces the air to pass through the tube set to reduce the temperature, and then from the air outlet to the warehouse.

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