Lithium bromide absorptive shielding electric pump for air conditioner

Abstract

The invention discloses a lithium bromide absorptive shielding electric pump for an air conditioner, comprising a pump body and a shielding motor connected with the pump body, wherein a circulation through hole is penetrated in a rotor shaft; one end of the circulation through hole is communicated with the inlet of the pump body while the other end is communicated with the inner cavity of a rear bearing pedestal; grooves are respectively arranged on an upper graphite bearing and a lower graphite bearing; the gap between a rotor shielding sleeve and a stator shielding sleeve is communicated with the cavity between a front bearing pedestal and an impeller back mouth ring through the groove on the lower graphite bearing, and communicated with the inner cavity of the rear bearing pedestal through the groove on the upper graphite bearing; and the cavity between the front bearing pedestal and the impeller back mouth ring is connected with an impeller chamber through an impeller balance hole. The lithium bromide absorptive shielding electric pump for the air conditioner greatly improves the cavitation overage, reduces the energy consumption, enhances the mass transfer coefficient and the change frequency of the lithium bromide, saves the cost and increases the efficiency of the air conditioning unit.

Description

Technical field: [0001] The invention relates to a shielded electric pump, in particular to a shielded electric pump for a lithium bromide absorption air conditioner. Background technique: [0002] The canned pump is a centrifugal pump, and its working principle is: relying on the high-speed rotating impeller, the liquid obtains energy under the action of inertial centrifugal force to increase the pressure. The characteristic is that the motor and the pump adopt an integrated structure, all of which are statically sealed, so that the electric pump is completely leak-free; the fully-closed, leak-free structure can transport toxic and harmful liquid substances; the shielded water-cooled motor and the cancellation of the cooling fan make the pump low-noise Silent operation, suitable for occasions with high environmental noise requirements; graphite sliding bearings lubricated by the transmission medium make the operation noise lower and do not require manual oiling, reducing ma...

AI Technical Summary

Problems solved by technology

[0005] This article is aimed at shielded electric pumps for lithium bromide absorption air conditioners with external circulation structure currently used. The rotor assembly itself is heavy, and the graphite bearing pressure acting on the lower bearing is high, which leads to excessive wear rate of graphite bearing and self-adjustment of axial force. Poor capacity, reliable operation, poor performance, easy to cause leakage of external circulation pipe, low service life, etc., to provide a new shielded electric pump for lithium bromide absorption air conditioners to meet the needs of economy, performance and other aspects

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