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scroll compressor

A technology of scroll compressors and scroll parts, which is applied in the direction of rotary piston machines, rotary piston pumps, mechanical equipment, etc., and can solve problems such as reduced operating capacity

Active Publication Date: 2020-10-20
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the scroll compressor needs to recompress the leaked refrigerant, and the operating capacity may decrease.

Method used

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Embodiment approach 1

[0021] figure 1 It is a longitudinal sectional view showing the overall structure of the scroll compressor according to Embodiment 1 of the present invention. Figure 2 ~ Figure 4 It is an enlarged longitudinal sectional view showing the upper part of the scroll compressor according to Embodiment 1 of the present invention, and all show the same parts. figure 2 It is a figure explaining the fixed scroll 1 especially. image 3 It is a figure explaining the orbiting scroll 2 especially. Figure 4 It is a figure explaining especially the compliant frame (Compliant frame) 3 and the guide frame 4.

[0022] First, the overall structure of the scroll compressor 100 will be described. Such as figure 1 As shown, a scroll compressor 100 accommodates a fixed scroll 1, an oscillating scroll 2, a flexible frame 3, a guide frame 4, a motor 5, an auxiliary frame 6, a shaft 7, and an Oldham slider mechanism in a closed container 10. (Oldham mechanism)8. Among them, the fixed scroll 1 a...

Embodiment approach 2

[0076] Next, based on Figure 8 Scroll compressor 101 according to Embodiment 2 of the present invention will be described. Figure 8 It is a vertical cross-sectional view showing an enlarged upper portion of a scroll compressor according to Embodiment 2 of the present invention. However, the same reference numerals are assigned to the same configurations as those of the scroll compressor 100 described in Embodiment 1, and description thereof will be appropriately omitted.

[0077] The scroll compressor 101 according to Embodiment 2 differs from the above-described configuration of Embodiment 1 in that the injection check valve mechanism 36 that prevents the refrigerant in the compression chamber 20 from flowing back into the injection circuit is provided. Specifically, on the fixed base plate 1a of the fixed scroll 1, at the halfway position from the side portion corresponding to the thickness of the plate toward the upper portion of the inflow hole 1g, there is formed a jet...

Embodiment approach 3

[0082] Next, based on Figure 9 and Figure 10 Scroll compressor 102 according to Embodiment 3 of the present invention will be described. Figure 9 It is a vertical cross-sectional view showing an enlarged upper portion of a scroll compressor according to Embodiment 3 of the present invention. Figure 10 It is an explanatory diagram showing a scroll compressor according to Embodiment 3 of the present invention, and shows in a planar manner that the protrusion of the swing table is displaced relative to the suction communication hole as the swing scroll rotates. Illustrating. However, the same reference numerals are assigned to the same configurations as those of the scroll compressors described in Embodiments 1 and 2, and description thereof will be appropriately omitted. In addition, in Figure 9 In the scroll compressor 102 according to the third embodiment shown, the structure in which the injection check valve mechanism 36 described in the above-mentioned second embod...

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PUM

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Abstract

This scroll compressor is provided with a closed container, a stationary scroll, an orbiting scroll, and an electric motor. A stationary base plate has formed therein: an inflow hole in which an injection refrigerant flows from the outside of the closed container through an injection pipe; an injection port for delivering the injection refrigerant into a compression chamber, the injection refrigerant having flowed in from the inflow hole; and a suction communication hole for providing communication between the inflow hole and a refrigerant suction space inside the closed container. The stationary base plate is provided with an injection check valve mechanism comprising: a check valve body disposed on the inflow hole side; and a spring disposed on the compression chamber side and biasing the check valve body toward the inflow hole.

Description

technical field [0001] The present invention relates to a scroll compressor having an injection check valve mechanism. Background technique [0002] In a scroll compressor, for example, as disclosed in Patent Document 1, there is a structure in which an inflow hole and an injection port are formed in a fixed platen of a fixed scroll in order to inject injection refrigerant into a compression chamber. An injection check valve mechanism is provided at the injection port, and the injection check valve mechanism has: a check valve element arranged on the side of the inflow hole of the injection port; and a spring arranged on the side of the compression chamber of the injection port and The check spool is biased toward the inflow hole side. In this scroll compressor, when the injection pressure is higher than the pressure in the compression chamber, the check valve element is opened to inject the injection refrigerant into the compression chamber. In addition, in the scroll com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/02
CPCF04C18/02
Inventor 鹤冈洋佑茗原将史
Owner MITSUBISHI ELECTRIC CORP
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