Highly effective heat pump air conditioner and hot water device suitable for wide temperature environment

Abstract

The invention relates to a heat pump air conditioner and hot water device with high-efficiency running adapting in wide temperature circumstance, comprising indoor and outdoor air heat exchanger and energy coupling heat exchanger; special low-temperature air-source heat pump in winter constituted by low-temperature compressor, first end of coupling heat exchanger, expansion valve and outdoor heat exchanger; artificial-source high-temperature heat pump heated by the special low-temperature air-source heat pump constituted by middle-high-temperature compressor, four-way reversing valve, indoor heat exchanger, expansion valve and second end of coupling heat exchanger; heating air-source heating pump with single compressor in winter with low temperature constituted by low-temperature compressor, indoor heat exchanger, expansion valve and outdoor heat exchanger; refrigeration air-source heat pump in summer with single compressor constituted by middle-high-temperature compressor, four-way reversing valve, outdoor heat exchanger, expansion valve and indoor heat exchanger; and heat pump for bath heating and heating hot water constituted by bath heat exchanger in air conditioner system and water heater. The invention is suitable for high-efficiency heating and refrigeration in circumstance temperature from -45deg.C to 45deg.C and provides hygiene hot water and bath heating at the same time.

Description

technical field [0001] The invention relates to a heat pump air conditioner and water heater, in particular to a heat pump air conditioner and water heater suitable for efficient operation in a wide temperature environment. Background technique [0002] Compared with water source heat pump air conditioners and ground source heat pump air conditioners, air source heat pump air conditioners have the characteristics of simple structure and convenient configuration. Compared with the electric heating tube water heater, the heat pump water heater has the characteristics of low energy consumption and high efficiency. However, the current air-source heat pump air conditioners and air-source heat pump water heaters have poor heating effects in low-temperature environments below 0°C, and their heating energy efficiency ratio decreases significantly with the decrease of ambient temperature, especially when the ambient temperature is close to - At 5°C, if the auxiliary electric heatin...

AI Technical Summary

Problems solved by technology

However, the current air-source heat pump air conditioners and air-source heat pump water heaters have poor heating effects in low-temperature environments below 0°C, and their heating energy efficiency ratio decreases significantly with the decrease of ambient temperature, especially when the ambient temperature is close to - At 5°C, if the auxiliary electric heating device is not added, effective heating operation and hot water heating operation cannot be performed, and when the outdoor temperature is higher than 30°C, due to the relatively high condensation temperature, the cooling efficiency of the heat pump air conditioner is also very low , it is difficult to perform efficient cooling operation

In addition, since the air conditioner and water heater are set independently, the single-function air conditioner and single-function water heater are not cost-effective, which limits the full play of the heat pump performance, and makes it difficult for users to configure and use the overall cost of heat pump air conditioners and heat pump water heaters. be effectively reduced

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