A hinged expander suction device

Abstract

The invention discloses a suction device of an articulated expander, comprising a crankshaft, an expansion cylinder, a first flange and a second flange, wherein the expansion cylinder, the first flange and the second flange are all sleeved on the crankshaft The first flange is located on one side of the expansion cylinder, and the second flange is located on the other side of the expansion cylinder; the expansion cylinder is provided with an inner cavity, and the cam of the crankshaft is located in the inner cavity , a roller is sleeved on the cam, wherein a first groove on the first flange is also provided with a first groove extending from the outer edge of the first flange to the first flange The first fluid channel of the groove; the roller is provided with a second fluid channel; the cam is provided with a communication structure, and the communication structure has a delivery position that communicates the first groove and the second fluid channel. During the suction process of the device, the refrigerant enters the expansion cylinder without passing through the long and short axes of the crankshaft, and the sealing performance of the refrigerant is good, thereby effectively preventing the leakage of the refrigerant.

Description

technical field [0001] The invention relates to the technical field of expanders, in particular to a hinged expander suction device. Background technique [0002] In the vapor compression refrigeration system, the throttling element is an important element to maintain the pressure difference between the condenser and the evaporator and control the flow of the system. The commonly used throttling elements are throttle valves and capillary tubes. The resistance loss causes the pressure of the refrigerant to drop rapidly. Throttle loss is an irreversible loss that reduces the thermodynamic sophistication of the cycle. The expander replaces the irreversible isenthalpic throttling process with a reversible adiabatic expansion process, which reduces the entropy increase of the system and improves the thermodynamic perfection of the system. [0003] The expander expands the unit volume of refrigerant in the expansion chamber, and the pressure in the chamber pushes the crankshaft ...

AI Technical Summary

Problems solved by technology

[0005] Since the first groove is provided on the crankshaft, when the high-pressure fluid (or refrigerant) enters the expansion cylinder, the fluid enters from the first high-pressure fluid passage, flows from the outer edge of the first flange toward the crankshaft, and then flows to The first groove then enters the expansion cylinder through the second high-pressure fluid channel for expansion. The high-pressure fluid passes through the short axis of the crankshaft. As the crankshaft and the first flange are constantly worn during the working process, it is easy to cause high pressure during the expansion process. Fluid leaks between the crankshaft and the first flange, which affects the working quality of the expander

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