Coupled water tank type ultra-low temperature air source heat pump air conditioner

Abstract

The invention relates to a coupled water tank type ultra-low temperature air source heat pump air conditioner comprising an air source heat pump, an artificial source heat pump and an air conditioner output loop, wherein a coupled water tank is arranged between the air source heat pump and the artificial source heat pump, the coupled water tank is in series connection with a front-level output water circulating pump and a front-level output heat exchanger to form an air source heat pump output loop, the coupled water tank is in series connection with a rear-level input water circulating pump and a rear-level input heat exchanger to form an artificial source heat pump output loop, and the coupled water tank is in series connection with an air conditioner fan coil and an air conditioner output water circulating pump to form a single-level heating and single-level cooling air conditioner output loop. The air source heat pump and the artificial source heat pump work simultaneously to heat at ultra-low temperature below 17 DEG C; the air source heat pump works in a single level to heat at low temperature above -7 DEG C and cool in summer, and the air source heat pump is matched with the single-level heating air conditioner output loop to defrost. The coupled water tank type ultra-low temperature air source heat pump air conditioner has high energy efficiency ratio, simple structure, low cost as well as convenient popularization and application.

Description

technical field [0001] The invention relates to an air source heat pump air conditioner, in particular to a water tank-coupled ultra-low temperature air source heat pump air conditioner. Background technique [0002] In order to make the air source heat pump air conditioner operate effectively in the ultra-low temperature environment below -7°C without auxiliary heating, the existing technology adopts a cascaded air source heat pump system, that is, a cascaded system consisting of a front-stage air-source heat pump and a rear-stage artificial source heat pump. Two stage heat pump system. This cascade heat pump system is inconvenient to switch from a two-stage heat pump operation to a single-stage heat pump operation. Therefore, no matter whether the outdoor ambient temperature is high or low, heating in winter or cooling in summer, the front and rear two-stage heat pumps are jointly operated, resulting in the operation of the air conditioning system. The energy efficiency r...

AI Technical Summary

Problems solved by technology

This cascade heat pump system is inconvenient to switch from a two-stage heat pump operation to a single-stage heat pump operation. Therefore, no matter whether the outdoor ambient temperature is high or low, heating in winter or cooling in summer, the front and rear two-stage heat pumps are jointly operated, resulting in the operation of the air conditioning system. The energy efficiency ratio is low, and the structure is complex, and the system cost is high, so it is difficult to become a practical air source heat pump air conditioning product for popularization and use

Images