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Vortex compressor

A scroll compressor and scroll technology, applied in the field of scroll compressors, can solve problems such as reducing compression efficiency

Inactive Publication Date: 2006-01-18
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the third example of the scroll compressor suffers from a problem that since the stepped portion is formed along the inside of the centrifugal wall in the region near the discharge hole of the fixed scroll, the compression efficiency is lowered

Method used

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Examples

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no. 1 example

[0045] figure 1 A sectional view showing the overall structure of a scroll compressor according to a preferred embodiment of the present invention, in which a pair of scroll members are designed according to the first embodiment of the present invention. Figure 2A A perspective view of a fixed scroll member 12 consisting of an end plate 12a and a centrifugal wall 12b is shown, Figure 2B A perspective view of an orbiting scroll member 13 consisting of an end plate 13a and a centrifugal wall 13b is shown. Figure 3A A perspective view showing the vortex initiation portion of the centrifugal wall 12b of the fixed scroll member 12, Figure 3B The mating state of the fixed scroll member 12 and the orbiting scroll member 13 is shown. Particularly, Figure 3B A cross-sectional view of the fixed scroll 12 taken from a cross section perpendicular to the axis of the discharge hole 25 is shown. Figure 4 An enlarged front view of the spiral start portion of the centrifugal wall 12...

no. 2 example

[0098] A scroll compressor according to a second embodiment of the present invention will be described below. The second embodiment is substantially the same as the first embodiment described above, wherein the second embodiment is characterized by the shape of the center of the centrifugal wall 12b, ie the spiral start portion 101, and the selected position of the discharge hole 25. Figure 6A and 6B Details of the second embodiment are shown in .

[0099] Same as the first embodiment, in the second embodiment of the design, the spiral start portion 101 of the centrifugal wall 12b of the fixed scroll member 12 is arranged with a stepped portion D in which the thickness of the centrifugal wall 12b is directed toward The root on the end plate 12a increases in a stepped manner. exist Figure 6A , the discharge hole 25 is arranged to partially overlap the thickness-increased region N (see shaded portion) of the stepped portion D of the centrifugal wall 12b on the end plate 12a...

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Abstract

A scroll compressor comprises a fixed scroll member and a revolving scroll member that engage with each other with their centrifugal walls, wherein the revolving scroll member is supported to revolve with respect to the fixed scroll member, but to avoid self-rotation thereof. The spiral-starting portion of the centrifugal wall comprises non-stepped portions formed along curves of beta 1- beta 1' and beta 2- beta 2' respectively, and a stepped portion formed along a curve beta 1'- beta 2' that provides a thickness increase area encompassed by its upper-side curved surface and its lower-side curved surface. The discharge port is located on the end board of the fixed scroll member to partly overlap with the thickness increase area by partly hollowing the lower side of the stepped portion with the prescribed height.

Description

technical field [0001] The invention relates to a scroll compressor installed in air conditioners, refrigerators and other equipment. Background technique [0002] The scroll compressor is composed of a fixed scroll part and a rotating scroll part (that is, a pair of scroll parts), and their centrifugal walls (or spiral walls) cooperate with each other to perform rotary motion. That is, the scroll compressor operates in such a manner that the orbiting scroll rotates relative to the fixed scroll. In this way, fluid is compressed in the compression space of the compressor, which is formed between the walls of the scroll member, and the volume of the compression space is gradually reduced during the compression process. [0003] Figure 7A and Figure 7B A pair of scroll members installed in the conventional scroll compressor described above is shown. Figure 8 A plan view schematically showing a central portion of a centrifugal wall of a scroll membe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/02
CPCF04C18/0276F04C18/02
Inventor 藤田胜博伊藤隆英竹内真实鹈饲彻三小川博史三浦茂树和田康弘丸岩保治田中耕
Owner MITSUBISHI HEAVY IND LTD
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