Wind and hydraulic double-source heat pump water chilling and heat unit and control method thereof

Abstract

The invention discloses a wind and hydraulic double-source heat pump water chilling and heat unit and a control method thereof. The wind and hydraulic double-source heat pump water chilling and heat unit comprises a four-way valve, one of the connecting ports of the four-way valve is connected with a shell-tube heat exchanger and an economizer, and the other three connecting ports of the four-way valve are connected with a gas-liquid separator, a fin type heat exchanger and a plate type heat exchanger; the gas-liquid separator is connected with the inlet of a compressor, and the outlet of the compressor is connected with the plate type heat exchanger; the shell-tube heat exchanger is connected with the economizer, and the economizer is connected with the fin type heat exchanger, the shell-tube heat exchanger and the compressor; the plate type heat exchanger and the shell-tube heat exchanger are connected with an external water source, and the fin type heat exchanger is connected with a fan. Compared with the prior art, the wind and hydraulic double-source heat pump water chilling and heat unit has the advantages of being capable meeting the requirements of users on cold water or hot water at any time through an air source and the water source, namely, being capable of achieving automatic switching among an air source heat pump mode, an air cooling cold water mode and a water source heat pump mode according to the requirements on the cold water or hot water and integrating three different functional units into one multifunctional unit, thereby achieving refrigerating and heating through the air source and the water source all around the year according to the cooling and heating requirements of the users.

Description

Technical field [0001] The invention relates to a wind-water dual-source heat pump cold and hot water unit and a control method thereof. Background technique [0002] Heat pumps currently on the market are divided into water source heat pumps, single-hot air-cooled heat pumps, and air-cooled heat pumps for cooling in summer and heating in winter. Each of these three heat pumps cannot efficiently meet the changing requirements of industrial production processes for cold and heat. In the traditional surface treatment industry, when cooling is required, it is necessary to use single-cooled air-cooled or water-cooled chillers. When the hot water is 85 degrees, the air source or water source heat pump unit needs to be put into use. Therefore, it is necessary to have two units at the same time to meet the production demand, thus increasing the production cost and maintenance cost. [0003] In the surface treatment industry, surface treatment includes profile oxidation, hard oxidation, e...

AI Technical Summary

Problems solved by technology

These treatment processes all need to provide high-temperature water sources. The temperature of the hot water outlet provided by the existing heat pump unit is basically about 55°C, which cannot meet the requirements of high-temperature hot water in the surface treatment industry, and the temperature of the outlet water is unstable, which may easily lead to oxidation. Unstable quality

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