Variable capacity mechanism of scroll compressor and scroll compressor

Abstract

The invention relates to a displacement mechanism for a scroll compressor and a related scroll compressor. According to one aspect of the present invention, a variable displacement mechanism for a scroll compressor is provided, the scroll compressor includes a compression mechanism, the compression mechanism includes a fixed scroll and a movable scroll and defines a series of compression chambers. The variable displacement mechanism includes: a discharge passage, which is adapted to communicate a medium-pressure compression chamber in the compression chamber with a low-pressure region; a blocking member, which is adapted to selectively open and close the discharge passage; and an actuating device, which includes an actuator The blocking member is connected to the actuating member so as to selectively open and close the discharge channel with the action of the actuating member. The blocking member is a plurality of blocking members, the execution member is a single execution member, and the multiple blocking members are connected to the single execution member so as to be able to move simultaneously with the action of the single execution member. According to the present invention, for example, synchronization of actions of a plurality of blocking members can be reliably realized.

Description

technical field [0001] The present invention relates to a displacement mechanism for a scroll compressor and related scroll compressors, more particularly, to a displacement mechanism for a scroll compressor that improves the synchronization of the action of the blocking member of the displacement mechanism. Variable displacement mechanism and associated scroll compressor. Background technique [0002] As the requirements for high efficiency and energy saving are getting higher and higher, air conditioners are the main energy-consuming products, and high efficiency, energy saving and comfort are the goals that are constantly pursued. Scroll compressors have been gradually developing toward larger horsepower and higher energy efficiency. The capacity-adjustable (variable capacity) scroll compressors can achieve high energy efficiency at low loads and have the characteristics of high reliability and low vibration. It is more and more widely used in capacity-adjustable air-con...

AI Technical Summary

Problems solved by technology

Therefore, on the one hand, the cross-sectional area of ​​the discharge return passage is limited due to the structure of the fixed scroll, so resistance to the discharge of the working fluid is generated, resulting in increased power consumption; on the other hand, the discharge return passage requires Radial extension and small diameter in the fixed scroll, thus causing processing difficulties

[0007] In addition, in the conventional scroll compressor with adjustable capacity, there are situations such as low precision of motion guidance of the variable displacement piston or plunger, collision between the variable displacement piston or plunger and the end face of the variable displacement hole, etc., which affect the displacement of the variable displacement piston or plunger. In addition, when increasing the matching gap between the variable volume piston or plunger and the variable volume hole in order to improve the operational reliability, it will cause leakage of the working fluid

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