Auto Conveying Vacuum Cooler

Auto conveying vacuum cooler
1. Processing capacity: 8 pallets / cycle (4 tons)
2. Delivery time: 45 working days after advance-payment
3. Payment way: 30% T/T as deposit, 70% paid before delivery
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Product Details

Auto conveying vacuum cooler

1. Processing capacity: 8 pallets / cycle (4 tons)

2. Delivery time: 45 working days after advance-payment

3. Payment way: 30% T/T as deposit, 70% paid before delivery

4. Home delivery service is available if needed;

5. Vacuum chamber material: Carbon steel / SUS304 stainless steel/ other


The main components of a vacuum cooler (1/2)

1. Vacuum chamber

There are 2 basic requirements for the vacuum chamber: dimension and strength.

In the one way, the size of the vacuum vessel must be huge enough to maintain the batch and work gaps for each cycle to allow for possible future changes in the stacking of heavy pallets or stack sizes. We offer a range of chambers for single or double rail conveyor systems. Any combination of stack can be integrated with our system.

In the other hand, the vacuum chamber must be strong and hard enough to withstand the frequent and large pressure differential between the outside and the inside of the vacuum chamber (this difference is caused by atmospheric pressure and vacuum).

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2. Vacuum pump

This is used for the initial evacuation of the vessel from atmospheric pressure to the flash point of the water. After reaching the flash point, the efficiency of the pump is limited by the cooling unit. In general, we will set the size of the vacuum pump to 5-8 minutes to reach the flash point. The type of pump that is usually used is the oil sealed type or maintenance-free (water-ring pump + roots pump) type.

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3. Refrigeration system

As long as the pressure reaches the flash point, the water starts to evaporate from the surface of the product. It is this evaporation which causes the quick cooling. In a machine that cools, for example, 1000 kg of product per cycle, 1860 m3 of steam is generated and pumped out of the chamber. In practice, the vacuum pump is too large to handle. Therefore, a freeze block is installed in the chamber, with which the steam can be returned to the water. The cooling unit is similar to a vacuum pump. The size of the cooling unit has a considerable influence on the cooling cycle time. 

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