A compound evaporative cooling heat pump unit

Abstract

The invention relates to the technical field of heat pump units, in particular to a composite evaporation cooling type heat pump unit. The composite evaporation cooling type heat pump unit structurally comprises a compressor, a four-way valve, an air side finned heat exchanger, an evaporation cooling type heat exchanger, a throttling device, a plurality of one-way valves, an air conditioner side heat exchanger, a liquid storage device, a gas-liquid separator and a draught fan assembly. Compared with the prior art, during refrigerating in summer, the air side finned heat exchanger and the evaporation cooling type heat exchanger act jointly and share the draught fan assembly, the exhaust temperature and the exhaust pressure of the evaporation cooling type heat pump unit are both lower than the exhaust temperature and the exhaust pressure obtained by independently using the air side finned heat exchanger, and therefore the refrigerating energy consumption is greatly reduced, and the refrigerating energy efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of heat pump units, in particular to a composite evaporative cooling heat pump unit. Background technique [0002] In the prior art, most of the air-cooled heat pump units use a single finned heat exchanger on the air side, and the exhaust temperature and pressure are relatively high. The air-cooled heat pump units are greatly affected by the ambient temperature. The ambient temperature is high, the condensation pressure is high, and the energy efficiency ratio decreases. Under extreme high temperature conditions, the cooling energy efficiency ratio of the air-cooled heat pump unit is lower. When the defrosting operation is low, the heat supply will be interrupted, and the defrosting loss accounts for about 10% of the total energy consumption loss of the heat pump. Therefore, the existing air-cooled heat pump unit has high energy consumption and low efficiency. Contents of the invention [0003] The obje...

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Problems solved by technology

[0002] In the prior art, most of the air-cooled heat pump units use a single finned heat exchanger on the air side, and the exhaust temperature and pressure are relatively high. The air-cooled heat pump units are greatly affected by the ambient temperature. The ambient temperature is high, the condensation pressure is high, and the energy efficiency ratio decreases. Under extreme high temperature conditions, the cooling energy efficiency ratio of the air-cooled heat pump unit is lower. The defrosting operation will also lead to heat supply interruption, and its defrosting loss accounts for about 10% of the total energy consumption loss of the heat pump

Therefore, the existing air-cooled heat pump units have high energy consumption and low efficiency

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