Static scroll plate assembly, scroll compressor and refrigeration equipment

Abstract

The invention provides a static scroll plate assembly, a scroll compressor and refrigeration equipment. The static scroll plate assembly comprises a plate body, an enthalpy increasing channel and an enthalpy spraying channel, wherein the plate body is provided with a compression channel; the enthalpy increasing channel is arranged on the plate body, and the enthalpy increasing channel is used forcommunicating with an enthalpy increasing pipeline of the scroll compressor; and the enthalpy spraying channel is arranged on the bottom wall of the plate body, the enthalpy spraying channel communicates with the compression channel and the enthalpy increasing channel, the enthalpy spraying channel comprises a flow blocking part, and the flow blocking part is used for preventing gas in the compression channel from flowing back to the enthalpy increasing channel. The gas in the compression channel is prevented from flowing back to the enthalpy increasing channel through the flow blocking part,and spreading of the gas flow flowing back to the enthalpy increasing pipeline from the compression channel can be effectively attenuated, so that the pressure pulsation intensity in the enthalpy increasing pipeline is weakened, the technical effect of reducing the pressure pulsation level in the enthalpy increasing pipeline is achieved, and the problems that the joint between the enthalpy increasing pipeline and a shell of the scroll compressor is broken and a valve plate is broken due to the fact that the refrigerant gas in an enthalpy increasing pipeline generates strong pulsation in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of refrigeration devices, in particular to a fixed scroll assembly, a scroll compressor and refrigeration equipment. Background technique [0002] Scroll compressor is a new type of volumetric fluid machine, mainly composed of moving and static scrolls, crankshaft, bracket body, anti-rotation Oldham slip ring and other components. Compared with traditional reciprocating, rotor, screw compressors, etc., 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-line air conditioners and in the heat pump system. 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 often suffers from a decr...

AI Technical Summary

Problems solved by technology

[0004] However, since the positions of the enthalpy injection channel 112' and the enthalpy increasing channel 117' arranged on the fixed scroll assembly 100' are fixed, the pressure in the compression chamber 240' communicated with the enthalpy injection channel 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'

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