Vortex compressor

A scroll compressor and volute technology, applied in the field of scroll compressors, can solve problems such as decline, increase in theoretical efficiency, leakage of scroll compressor compression efficiency, etc.

Inactive Publication Date: 2006-02-08
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In other words, when in order to increase the compression ratio V i While increasing L / H, the theoretical efficiency increases; however, in practice, the amount of refrigerant leaking from the compression chamber via the fitting portion between the stepped portions 52 and 53 increases due to the high pressure and the increase in the height L
Therefore, there is a problem that the compression efficiency of the scroll compressor decreases due to leakage

Method used

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Embodiment Construction

[0032] Reference attached figure 1 Up to 8, an embodiment of the scroll compressor according to the present invention will be explained.

[0033] figure 1 The structure of a back pressure scroll compressor as an embodiment of the present invention is shown. The scroll compressor includes an airtight casing 1, a discharge cover that divides the casing 1 into a high-pressure chamber (HR) and a low-pressure chamber (LR), a frame 5, a suction pipe 6, a discharge pipe 7, a motor 8, and a rotating shaft 9. And anti-rotation mechanism 10.

[0034] In addition, the scroll compressor has a fixed scroll 12 and an orbiting scroll 13 meshed with the fixed scroll 12. Such as figure 2 As shown, the fixed scroll 12 includes a spiral wall 12b provided on the side surface of the end plate 12a. The surrounding volute 13 also includes a spiral wall 13b arranged on the side surface of the end plate 13a. In particular, the shape of the wall 13b is similar to the wall 12b of the fixed volute 12. Th...

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Abstract

A scroll compressor comprises a fixed scroll which is fixed in position and has a spiral wall body provided on one side surface of an end plate, and an orbiting scroll (13) which has a spiral wall body (13b) provided on one side surface of an end plate (13a), being supported by engaging of the wall bodies so as to orbit and revolve around the fixed scroll without rotation. When a length of the wall body (13b) which is further out than a step portion (43) which is provided on the end plate (13a), is represented by H and a step difference of the step portion (43) is represented by L, L / H is 0.2 or less.

Description

Technical field [0001] The invention relates to a scroll compressor installed in an air conditioner, a refrigerator, and the like. Background technique [0002] In the conventional scroll compressor, the fixed scroll and the surrounding scroll are arranged by joining their spiral walls, and the fluid in the compression chamber formed between the walls is surrounded by the surrounding scroll due to the volume of the compression chamber. The rotation of the fixed scroll gradually decreases and is compressed. [0003] The compression ratio in the scroll compressor design is the maximum volume of the compression chamber (the volume when the compression chamber is formed by the meshing of the walls) and the minimum volume of the compression chamber (just before the walls are disengaged and the compression chamber disappears) The ratio of the volume) is expressed by the following equation (I): [0004] V i ={A(θ suc )·L) / {A(θ top )·L}=A(θ suc ) / A(θ top ) .............

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 藤田胜博竹内真实伊藤隆英
Owner MITSUBISHI HEAVY IND LTD
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