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Scroll compressor

A scroll compressor and scroll technology, applied in the field of scroll compressors, can solve problems such as leakage and performance deterioration

Active Publication Date: 2011-04-13
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, a gap is generated between the orbiting scroll and the fixed scroll, so leakage occurs during compression, causing performance deterioration

Method used

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Examples

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Embodiment 1

[0212] Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited to these Examples.

[0213] A first embodiment of the present invention will be described. figure 1 is a longitudinal sectional view of the scroll compressor in the first embodiment of the present invention, figure 2 yes figure 1 Cross-sectional view of the compression mechanism of a scroll compressor. Next, the structure, operation and function of the scroll compressor of the first embodiment will be described.

[0214] Such as figure 1 , figure 2 As shown, the scroll compressor of the present embodiment is constituted by an airtight container 1 , a compression mechanism 2 provided inside the airtight container 1 , a motor unit 3 , and an oil accumulator 20 .

[0215] Between the main bearing part 11 of the crankshaft 4 fixed by welding and heat press fitting in the airtight container 1 and the fixed scroll 12 fixed on the m...

Embodiment 2

[0253] A second embodiment of the present invention will be described. Figure 7 It is a sectional view of the compression mechanism of the scroll compressor in the second embodiment of the present invention. In this embodiment, parts of the invention that are different from those in Embodiment 1 will be described. That is, in Figure 7 in, for with figure 2 The same symbols are used for the same components, and descriptions thereof are omitted.

[0254] Such as Figure 7 As shown, in the scroll compressor of this embodiment, the second path 56 is composed of a second control path that passes from the back pressure chamber 29 through the interior of the orbiting scroll 13 and then communicates with the thrust surface 13f of the orbiting scroll 13 . Furthermore, the second control path is intermittently opened in the wrap groove 12g of the fixed scroll 12 according to the rotational motion.

[0255] Figure 8 is a cross-sectional view of a state where the orbiting scroll...

Embodiment 3

[0265] A third embodiment of the present invention will be described. Figure 9 is a longitudinal sectional view of a scroll compression mechanism in a third embodiment of the present invention, Figure 10 yes Figure 9 The cross-sectional view of the compression mechanism of the scroll compressor, Figure 11 yes Figure 10 The cross-sectional view of the fixed scroll and the orbiting scroll of the compression mechanism meshed with each other.

[0266] Such as Figure 9 As shown, in the scroll compressor of this embodiment, the main bearing part 11 of the crankshaft 4 fixed by means of welding and shrink fit in the airtight container 1 and the fixed scroll 12 fixed on the main bearing part 11 with bolts Between them, the orbiting scroll 13 meshing with the fixed scroll 12 is interposed, constituting the scroll compression mechanism 2 . Further, between the orbiting scroll 13 and the main bearing member 11, a rotation restricting mechanism 14 is provided, and the rotation ...

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PUM

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Abstract

A scroll compressor in which timing of communication between a high-pressure region and a back pressure chamber and timing of communication between the back pressure chamber and a compression chamber are controlled to prevent excessive back pressure, allowing application of stable back pressure. As a result, the scroll compressor has high efficiency and high reliability. The scroll compressor has a first route (54) for intermittently interconnecting a high-pressure region (30) and a back pressure chamber (29), and also has a second route (55) for intermittently interconnecting the back pressure chamber (29) and a compression chamber (15).

Description

technical field [0001] The present invention relates to a scroll compressor used in cooling devices such as heating and cooling air conditioners and refrigerators, or heat pump water supply devices. Background technique [0002] In the past, the scroll compressors used in refrigeration air conditioners and refrigerators generally have a fixed scroll member and an orbiting scroll member that have a helical scroll member that stands up from the panel (or wall) and engages with each other. , forming a compression chamber between the two. When the orbiting scroll is rotated along a circular orbit by the rotation restriction of the rotation restriction mechanism, the compression chamber changes its volume while moving, thereby performing suction, compression, and discharge. The working fluid is gradually compressed along with the rotational motion of the orbiting scroll, and gradually becomes a high-pressure state toward the center. Therefore, a turning away force acts on the r...

Claims

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Application Information

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IPC IPC(8): F04C18/02
Inventor 作田淳河野博之中本达也大野龙一山田定幸森本敬二上义幸船越大辅飨场靖阪井学嶋田贤志吉田裕文池田明鶸田晃中井启晶
Owner PANASONIC CORP
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