Motor-operated compressor
AssigneeLG Electronics Inc.
InventorsIlyoung PARK, Joohyung KIM, Taekyoung KIM
Life of this patent
Estimating the term…
Abstract
An electric compressor includes a first scroll and a second scroll engaged with the first scroll and making an orbiting motion to form a pair of two compression chambers with the first scroll. A rotary shaft is eccentrically coupled to the second scroll and is rotatably supported by a bearing member. A frame is fixed to an opposite side of the first scroll from the second scroll with the second scroll being interposed between the frame and the first scroll. The frame includes a bearing support portion, and the bearing member is inserted into and fixed to the bearing support member with an interference fit.
Claims20
An electric compressor comprising:
- a first scroll;
- a second scroll engaged with the first scroll on a first side of the first scroll, the second scroll being configured to make an orbiting motion relative to the first scroll to form a pair of two compression chambers with the first scroll;
- a rotary shaft eccentrically coupled to the second scroll;
- a bearing member rotatably supporting the rotary shaft;
- and
- a frame fixed to an opposite, second side of the first scroll with the second scroll interposed between the frame and the first scroll, the frame including a bearing support portion, and the bearing member being inserted into the bearing support portion and fixed to the bearing support portion,
- wherein an inner diameter of the bearing support portion is smaller than an outer diameter of the bearing member before the bearing member is inserted into the bearing support portion.
An electric compressor comprising:
- a first scroll;
- a second scroll engaged with the first scroll on a first side of the first scroll, the second scroll being configured to orbit relative to the first scroll to form a pair of two compression chambers with the first scroll;
- a rotary shaft eccentrically coupled to the second scroll;
- a frame fixed to an opposite, second side of the first scroll with the second scroll interposed between the frame and the first scroll and the rotary shaft penetrating through a portion of the second scroll;
- a bearing support portion formed in the frame;
- and
- a bearing member inserted into the bearing support portion and disposed between the frame and the rotary shaft or between the second scroll and the rotary shaft and rotatably supporting the rotary shaft,
- wherein an outer diameter of the bearing member is 0.08% to 0.13% greater than an inner diameter of the bearing support portion before the bearing member is inserted into the bearing support portion.
An electric compressor comprising:
- a frame;
- a fixed scroll fixed to the frame;
- an orbiting scroll engaged with the fixed scroll, the orbiting scroll being configured to make an orbiting motion relative to the fixed scroll to form a pair of two compression chambers with the fixed scroll;
- a rotary shaft eccentrically coupled to the orbiting scroll;
- and
- a bearing member rotatably supporting the rotary shaft, wherein
- the orbiting scroll is interposed between the frame and the fixed scroll, the frame includes a bearing support portion, the bearing member is inserted into the bearing support portion and fixed to the bearing support portion, an inner diameter of the bearing support portion is smaller than an outer diameter of the bearing member before the bearing member is inserted into the bearing support portion, and the bearing support portion includes a guide surface along a portion of the inner diameter of the bearing support portion with an inner diameter of the guide surface increasing in a direction in which the bearing member is inserted into the bearing support portion.
Dependencies are inferred from the claim text.