Non-orbiting scroll assemblies, scroll compressors and refrigeration equipment

Abstract

The invention provides a fixed scroll assembly, a scroll compressor and refrigeration equipment. The fixed scroll assembly includes: a disk body on which a compression channel is arranged; an enthalpy increasing channel arranged on the disk body to increase enthalpy The channel is used to communicate with the enthalpy-increasing pipeline of the scroll compressor. The enthalpy-increasing channel includes a plurality of connecting sections, and a first included angle is formed between two adjacent connecting sections in the plurality of connecting sections; the enthalpy-increasing nozzle is arranged on the disc On the body, the enthalpy-increasing nozzle communicates with the compression channel and the enthalpy-increasing channel. By setting the enthalpy-increasing channel to include multiple connecting sections, a first angle is formed between two adjacent connecting sections among the multiple connecting sections, that is, when the refrigerant gas flows between the multiple connecting sections, when the refrigerant gas A certain angle needs to be deflected when entering from one connecting section to another connecting section connected to it, so that it can produce obvious flow resistance to the return flow of refrigerant gas, thereby effectively attenuating the pressure pulsation intensity in the enthalpy-increasing pipeline.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a fixed scroll assembly, a scroll compressor and a refrigeration device. Background technique [0002] Scroll compressor is a new type of volumetric fluid machinery, mainly composed of dynamic and static scroll disks, crankshaft, bracket body, anti-rotation cross slip ring and other components. It is different from traditional reciprocating, rotor and screw compressors. Compared with the machine, it has many excellent characteristics such as fewer parts, high volumetric efficiency, continuous and stable compression process, and low vibration and noise. It is currently widely used in multi-connected air conditioners and heat pump systems. As the core equipment of the refrigeration system, the performance of the scroll compressor directly determines the heat exchange effect of the system. When the external environment temperature is constant, the traditional scroll compressor ...

AI Technical Summary

Problems solved by technology

[0004] However, since the positions of the enthalpy-increasing nozzle 112' and the enthalpy-increasing passage 120' arranged on the fixed scroll assembly 100' are fixed, the pressure in the compression chamber 240' communicated with the enthalpy-increasing nozzle 112' is As the rotation of the crankshaft changes periodically, and with the movement of the movable scroll 230', the compression chamber 240' communicates and closes periodically with the enthalpy-increasing pipeline 210', causing refrigerant gas to flow in through the enthalpy-increasing pipeline 210' The process of the scroll compressor 200' is actually in a pulsating form

When the enthalpy-increasing pressure is higher than the pressure inside the compression chamber 240', the enthalpy-increasing airflow is injected into the compression chamber 240' to achieve the effect of supplementing air; but when the enthalpy-increasing pressure is lower than the pressure inside the compression chamber 240', the airflow in the compression chamber 240' back into the enthalpy-increasing pipeline 210', forming a backflow phenomenon

Since the pressure in the compression chamber 240' changes periodically, air supplementation and backflow will occur alternately, resulting in a periodic pulsating flow effect, which will cause enthalpy-increasing pipeline 210' and the throttle valve, etc. Periodic exciting force, when the frequency of the low-order exciting force is close to the low-order frequency of the enthalpy-increasing pipeline 210' and the throttle valve plate, it will cause the enthalpy-increasing pipeline 210' and the throttle valve plate to vibrate strongly, and Accompanied by the large noise, it may even cause the enthalpy increasing pipeline 210' and the throttle valve plate to break, seriously affecting the reliability of the scroll compressor 200'

Images