Heat pump unit system and flash tank structure thereof

Abstract

The invention provides a flash tank structure which comprises a hollow tank body, a first pipeline and a second pipeline, wherein the first pipeline is locally arranged in the tank body; the first pipeline is equipped with a refrigerating entrance and a heating liquid outlet; the heating liquid outlet is connected with the tank body; the second pipeline is locally arranged in the tank body; the second pipeline is equipped with a heating entrance and a refrigerating liquid outlet; the refrigerating liquid outlet is connected with the tank body; and a distance from the heating liquid outlet to the bottom of the tank body is more than the distance from the refrigerating liquid outlet to the bottom of the tank body. Thus, more refrigerant is required under the refrigerating state and the refrigerating liquid outlet is capable of sucking sufficient refrigerant for guaranteeing the system running. Less refrigerant is required under the heating state, the redundant refrigerant can be stored in the tank body and cannot enter into the heating liquid outlet and the reliability of the system running is prevented from being influenced by the redundant refrigerant, so that a heat pump unit system can stably run. The invention also provides the heat pump unit system.

Description

technical field [0001] The invention relates to the technical field of air conditioning equipment, in particular to a heat pump unit system and a flash tank structure thereof. Background technique [0002] At present, the air-cooled screw heat pump unit is widely used in shopping malls, hotels, hospitals and other public places because of its simple structure, reliable operation, and adjustable load. To achieve the purpose of cooling and heating. Usually, the air-cooled screw heat pump unit usually uses a flooded heat exchanger to achieve heat exchange, but because of the large difference between the volume of the fins and the shell and tube of the flooded heat exchanger, the surplus refrigerant is very large, and the surplus refrigerant is difficult to Balance, there is a problem that the system needs more refrigerant when cooling, and the system needs less refrigerant when heating, resulting in poor operation reliability and affecting the normal operation of the air-coole...

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to solve the problem that the surplus refrigerant in the heat exchanger of the air-cooled screw heat pump unit is difficult to balance, which leads to the poor operation reliability of the heat pump unit, and provide a system that can store excess refrigerant during heating and ensure sufficient refrigerant during cooling. A flash tank structure with reliable system operation, and a heat pump unit system containing the above flash tank structure is also provided

Images