Refrigerant pump

Abstract

The invention discloses a refrigerant pump, which comprises a shell, wherein the interior of the shell is partitioned into a rotor chamber and a motor chamber by a dividing plate, an impeller is arranged in the rotor chamber, and a refrigerant main runner is formed between the rotor chamber and the impeller; and the rotor chamber is also provided with a suction inlet and an exhaust outlet which cover the side part and the radial outer side of the impeller. The shape of the shell which is in contact with fluid is approximately identical with the eddy direction, so that the eddy loss is reduced; and in addition, the separating loss of the fluid flowing at an inlet of the impeller is reduced, and the flowing property of the fluid is improved. On the basis that the shapes of blades incline towards the rotating direction, the runner between the side surfaces of the blades and the shell component is semicircular, so that the impeller efficiency can be further improved, and the whole efficiency of the pump can be further improved.

Description

technical field [0001] The invention belongs to the technical field of fluid machinery, in particular to a refrigerant pump. Background technique [0002] Refrigerant pumps, which are fluid machines that circulate refrigerant, are provided in refrigerant piping used in refrigerators and air conditioners. In the refrigerant pump disclosed in Patent Document 1 (JP 2003-161284), an impeller having a plurality of blades arranged on the outer edge is arranged in a casing having a fluid suction port and a discharge port and forming an annular flow path. The impeller rotates at a high speed in the shell, so that the refrigerant rotates roughly one circle to obtain the refrigerant with the required lift. [0003] However, the blades of this refrigerant pump are in the shape of a flat plate, and when the impeller rotates, a large separation loss occurs at the inlet of the impeller. Furthermore, in the refrigerant pump disclosed in Patent Document 1, since the cross-sectional shape ...

AI Technical Summary

Problems solved by technology

[0005] However, when a disc-shaped impeller is formed with a plurality of through-holes (blade grooves), the radially outer sides of the blade grooves or through-holes are covered by the outer circumference of the impeller, and the radially outer sides of the blade grooves or through-holes flow The fluid in the channel collides with the outer periphery of the impeller, resulting in energy consumption

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