A heat pump unit for radiator heating and its control method

Abstract

A heat pump unit for radiator heating and its control method, relating to a hot water central heating system using a heat pump and its control method, in particular to a heat pump unit for providing hot water for radiator heating and a control method for the heat pump unit , including the air supply and enthalpy-increasing compressor unit, radiator, high-temperature heat storage device, and medium-temperature volumetric device; the refrigerant circulation loop starts from the compressor and passes through the four-way valve, high-temperature heat storage device, medium-temperature volumetric device, economizer, and main heat Expansion valve and air supply expansion valve, as well as fin heat exchanger, four-way valve and gas-liquid separator, and then return to the compressor; the control device realizes variable temperature heating by controlling the operation process of the refrigeration system and the operation process of the hot water system of the heat pump unit Water temperature control: the invention can produce high-temperature hot water only by using single-stage compression and ordinary environmentally friendly refrigerants, and can meet the requirements of high and low heating load changes, and at the same time realize the function of energy storage when a large amount of heat energy is not needed indoors. The effect of cutting peaks and adding valleys.

Description

technical field [0001] The invention relates to a hot water central heating system using a heat pump and a control method thereof, in particular to a heat pump unit for providing hot water for radiator heating and a control method for the heat pump unit. Background technique [0002] The decline of air quality in northern my country, frequent occurrence of smog, high heating costs and many other comprehensive factors have made the capital Beijing, Tianjin, Hebei and other places make up their minds to vigorously promote the "coal to electricity" policy and spend tens of billions of dollars on traditional small coal stoves for heating. Implementation of power supporting transformation projects. Heating in the north is mostly based on radiators, and the use of heat pumps to provide heating for radiators is an important technical solution for coal-to-electricity conversion. Chinese invention patent "heat pump hot water heating device" (Chinese invention patent number: ZL0312326...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a heat pump unit for radiator heating, which can solve the technical problem of different hot water temperature requirements for radiator heating at different room temperature conditions by only using single-stage compression and ordinary environmentally friendly refrigerants , which can not only meet the needs of rapid temperature rise when the indoor temperature is low, but also reduce the water temperature to keep the room temperature constant when the indoor temperature is close to the room temperature set value, so as to achieve the purpose of energy saving and consumption reduction

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