US 2006/0222549 A1 · Apparatus for controlling quantity of feeding oil of inverter compressor

Abstract

An oil feed controller of an inverter compressor controls the quantity of feeding oil to prevent excess oil from being fed to a compression part when rotational speed of a rotation shaft is increased. The oil feed controller includes an installation hole formed in the rotation shaft to communicate with an oil passage of the rotation shaft, a bypass formed in the rotation shaft to communicate with the leading end of the installation hole, and an oil feeding controlling part installed in the installation hole to close the bypass when the rotation shaft rotates at low speed and to open the bypass when the rotation shaft rotates at high speed such that the quantity of oil ascending to the compression part through the oil passage is controlled.

Claims18

Dependent claims

An oil feed controller of an inverter compressor comprising:

a rotation shaft rotated by an inverter driving part and having an oil passage formed in the axial direction;
an oil feed pump installed at the lower side of the rotation shaft to feed oil reserved in a shell to a compression part through the oil passage;
and
an oil feed controlling part installed in the rotation shaft to communicate with the oil passage and controlling the quantity of oil ascending to the compression part through the oil passage according to rotational speed of the rotation shaft.

1 more element

An oil feed controller of an inverter compressor comprising:

a rotation shaft rotated by an inverter driving part and having an oil passage formed in the axial direction;
an oil feed pump installed at the lower side of the rotation shaft to feed oil reserved in a shell to a compression part through the oil passage;
an installation groove formed in the lower end of the rotation shaft and having an upper side to communicate with the oil passage;
an insertion member inserted into and fixed in the installation groove and having an oil feeding passage formed in the axial direction and communicating with the oil passage;
and
an oil feed controlling part installed in the oil feeding passage, formed in the upper side of the insertion member to communicate with the oil passage, and controlling the quantity of oil ascending to the compression part through the oil passage by reducing the cross section of the oil passage as rotational speed of the rotation shaft is increased.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/208,656Filed 23 Aug 2005

Priority

KR 10-2005-002658230 Mar 2005

Published

5 Oct 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

F04C 29/021
Lubrication ; Lubricant separation: control systems for the circulation of the lubricant
F04C 29/023
Lubrication ; Lubricant separation: lubricant distribution through a hollow driving shaft
F04C 28/08
Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids: characterised by…
F04C 2240/403
Electric motor: with inverter for speed control

Apparatus for controlling quantity of feeding oil of inverter compressor

Life of this patent

Apparatus for controlling quantity of feeding oil of inverter compressor

Life of this patent

Abstract

Claims18