Rotating wheel type total-heat-recovery fresh air unit

Abstract

The invention relates to the technical field of total heat recovery, in particular to a rotating wheel type total-heat-recovery fresh air unit which comprises a unit shell. The unit shell is provided with a fresh air inlet cavity, a recovery cavity, an air supply cavity, an air return cavity and an exhaust cavity. A primary filter and a medium-efficiency filter are sequentially arranged in the fresh air inlet cavity from outside to inside. An energy recovery rotating wheel is arranged in the recovery cavity. A second heat exchanger, a condensation heat recoverer, a humidifier and a blower are sequentially arranged in the air supply cavity from inside to outside. A compressor and a four-way reversing valve are sequentially arranged in the air return cavity from outside to inside. A first heat exchanger and an exhaust fan are arranged in the exhaust cavity. The rotating wheel type total-heat-recovery fresh air unit has the beneficial effects that fresh air and exhausted air are subjected to total heat recovery firstly through a rotating wheel heat recovery device, then an evaporator of a heat pump system is used for cooling and dehumidifying the fresh air, a condenser of the heat pump system is then used for carrying out proper heating treatment, and therefore the risk of moisture condensation caused by the too low air outlet temperature is avoided. In addition, the structure is simple, design is reasonable, and manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of total heat recovery, in particular to a rotary wheel type total heat recovery fresh air treatment unit. Background technique [0002] With the popularization of civil air-conditioning systems in our country, people are no longer satisfied with ordinary temperature requirements, and put forward higher requirements for air humidity and air quality. In my country's existing relevant HVAC design specifications, the value of fresh air volume is designed according to the minimum fresh air volume, and secondly, in the air distribution of the air conditioning system, the mixed air supply mode of fresh return air is often used, which directly leads to the ineffectiveness of indoor pollutants. emissions, affecting the air quality of air-conditioned rooms. Practice has proved that increasing the fresh air volume can effectively dilute indoor harmful substances, increase the oxygen content of indoor air, and signific...

AI Technical Summary

Problems solved by technology

[0004] First, fresh air is directly sent to the room after heat recovery, and the load of indoor air-conditioning equipment increases, resulting in fluctuations in room temperature and humidity, affecting the comfort of housing prices

[0005] Second, after the fresh air is cooled and dehumidified by the surface cooler or direct evaporator, the temperature of the supply air may be too low, causing indoor condensation and affecting indoor air quality

[0006] Third, the energy consumption of electric heating fresh air treatment in winter is relatively high, and the indoor humidity control effect is poor

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