Continuous heat supply phase-change energy storage defrosting system

Abstract

The invention provides a non-intermittent phase-change heat storage defrosting system, which relates to an energy storage defrosting system. The defrosting system aims at solving the problems that an air source hot pump defrosting method has the poor stability and reliability of machine units and the rooms become less comfortable after heat supply is stopped. The defrosting system of the invention is characterized in that an indoor machine is connected with a first pipeline and a second pipeline; an outdoor machine is connected with a second pipeline and a third pipeline; the third pipeline is respectively connected with the indoor pipeline and the outdoor pipeline; a fourth pipeline and a fifth pipeline are respectively connected with the fist pipeline and the third pipeline; a compressor is connected with a gas-liquid separator; a four-way directional valve is respectively connected with the first and the fifth pipelines, the gas-liquid separator and the compressor; the phase-change heat storage device is connected with the fifth and the fourth pipelines through a sixth pipeline and a seventh pipeline; an eighth pipeline is respectively connected with the fifth and seventh pipelines; a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve, an eighth valve and a ninth valve are respectively arranged on the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline, the first pipeline, the second pipeline, the third pipeline, the fourth pipeline and the first pipeline; a capillary pipe is arranged on the fourth pipeline. The defrosting system of the invention has good stability and reliability, high defrosting speed, and high comfort level of the room after the heat supply is stopped.

Description

technical field [0001] The invention relates to an energy storage defrosting system. Background technique [0002] The air source heat pump operates under the weather conditions of -5°C to 5°C, and the relative humidity (RH) is above 70%, and the surface of its outdoor heat exchanger is the most prone to frost. Frosting of the outdoor unit of the air source heat pump will lead to a decrease in evaporation temperature, a decrease in heating capacity, attenuation of fan performance, and increase in current, which will cause the air source heat pump unit to fail to work normally. Therefore, the periodic defrosting of the air source heat pump is a necessary link to ensure the normal operation of the unit. [0003] At present, air source heat pump defrosting methods include thermal defrosting and non-thermal defrosting. The shortcomings of each defrosting method are as follows: [0004] 1. Non-thermal defrosting is to suppress frosting through special treatment on the surface ...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the defrosting method of the existing air source heat pump, because the defrosting energy of the hot gas mainly comes from the compressor, the stability and reliability of the unit are poor, the comfort of the room is affected after the heating is stopped, and the defrosting is caused by the absence of a low-level heat source. The problem of slow speed, and then provide a non-interruptible heating phase change energy storage defrosting system

Images