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Difference between the various thermal pumps
Heat transfer oil pump, is the delivery of oil pump temperature, generally do not centrifugal, so easy to vaporize hot oil, resulting in gas chamber, so that the pump impeller damage. General with screw, gear type. Centrifugal, screw type , Gear difference is as follows: First of all, from the principle of the pump can be divided into positive displacement pump and rotary pump. Positive displacement pump is due to changes in the volume of the pump to achieve delivery of liquid; rotary pump is driven by the rotation of the pump wheel to achieve delivery. Among them, the screw pump and gear pump belong to the former, they have their own advantages and disadvantages, suitable for conveying different quality of liquid. Centrifugal pump belongs to the latter, the liquid quality requirements are not so strict. From the pump's structure point of view, the screw pump can be divided into single screw pump, twin screw pump and three screw pump. Gear pump can be divided into internal gear pump and external gear pump, generally used for conveying low viscosity oil. Centrifugal pump is composed of pump housing and impeller, all kinds of pumps are of this type, the use is also quite extensive. At present, the type of heat pump on the market can be described as a wide range, so in the selection of heat-conducting oil pump should pay attention.