Evaporative condenser heat pump air-conditioning unit

Abstract

The invention discloses an evaporative condenser heat pump air-conditioning unit, which comprises a condenser, and the condenser comprises a housing, a solution pump, an automatic doser, a water-collecting tray, heat-dissipating filling, an evaporator coil, water nozzles and a fan; the fan, the water nozzles, the evaporator coil, the heat-dissipating filling and the water-collecting tray are arranged sequentially from the top down in the housing, and the lower part of the housing is provided with an air inlet between the water-collecting tray and the heat-dissipating filling; one end of the evaporator coil is connected with the end b of a four-way reversing valve, and the other end of the evaporator coil is connected with one end of an evaporator through a thermal expansion valve and a first one-way valve; the water inlet of the solution pump is connected with the water-collecting tray, and the water outlet of the solution pump is connected with the water nozzles; and the automatic doser is connected in parallel with the solution pump. The invention overcomes the defects of conventional air source heat pumps supplying heat in winter in damp, cold regions with a run of wet weather and high air humidity, i.e. severe frosting, demand for defrosting and low heat pump efficiency; meanwhile, the evaporative condenser heat pump air-conditioning unit is not limited by geological conditions, the cost is low, and the energy efficiency is high.

Description

technical field [0001] The invention relates to a heat pump air conditioner unit, in particular to an evaporative condenser heat pump air conditioner unit, which belongs to the field of refrigeration and air conditioning. Background technique [0002] With the large-scale promotion of heat pump technology across the country, some areas where groundwater resources are not abundant, and areas that do not have wells and buried pipes cannot adopt the most energy-saving ground water source heat pump technology. At this time, the energy efficiency ratio EER of the unit is much smaller than that of the water-cooled chiller. Under extreme high temperature conditions, the cooling energy efficiency ratio of the air source heat pump unit is lower than the EER; When the coefficient COP decreases, the defrosting operation will also lead to heat supply interruption, and the defrosting loss accounts for about 10% of the total energy consumption loss of the heat pump. Traditional air s...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an evaporative condenser heat pump air-conditioning unit, which utilizes the heat in the outdoor air to realize cooling, heating and provide domestic hot water. The disadvantages of severe frosting and defrosting during heating in winter in high air humidity, humid and cold areas, and low heat pump efficiency; at the same time, it is not restricted by geological conditions and does not rely on groundwater, surface water and other heat sources, which not only saves the need for ground water source heat pump air conditioning The cost of drilling wells and buried pipes; at the same time, it saves the high-power water pump on the heat source side, which greatly reduces the one-time investment and saves the daily operating cost of the high-power water pump on the heat source side

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