Multi-connected direct-expansion all-air fresh air dehumidification system

Abstract

The invention discloses a multi-connected direct-expansion all-air fresh air dehumidification system in the field of indoor air purification. Themulti-connected direct-expansion all-air fresh air dehumidification system comprises an outdoor unit and indoor evaporation dehumidification units, the outdoor unit is connected with a distribution box and a main control screen, the outdoor unit is connected with the multiple indoor evaporation dehumidification units in parallel, and the indoor evaporation dehumidification units are connected with indoor sub-control screens. Each indoor evaporation dehumidification unit comprises an outdoor fresh air inlet pipe, an indoor air return pipe, an evaporator, a reheater, a fan, an indoor air supply pipe and a temperature and humidity detection module, wherein an air pipe heat exchange pipe is arranged in the evaporator. The air pipe heat exchange pipes and liquid pipe heat exchange pipes are matched, the temperature and the humidity are controlled through two independent electronic expansion valves correspondingly, it can be guaranteed that dehumidification can be achieved after the room temperature reaches a set value, the indoor temperature is not reduced, the indoor comfort is guaranteed, a reheating coil is additionally arranged on each evaporator, the reheating function is achieved through waste heat of condensers, the purpose of dehumidification is achieved, waste heat can be utilized, and the energy utilization rate is increased.

Description

technical field [0001] The invention relates to the field of indoor air purification, in particular to a multi-connected direct expansion all-air fresh air dehumidification system. Background technique [0002] The fresh air system is an independent air treatment system composed of an air supply system and an exhaust system. It is divided into two types: ducted fresh air system and ductless fresh air system. The ducted fresh air system is composed of fresh air fans and pipe fittings. The outdoor air is purified by the fresh air fans and introduced into the room, and the indoor air is discharged through the pipes. The ductless fresh air system is composed of fresh air fans. Relatively speaking, the ducted fresh air system is more suitable for industrial or large-area office areas due to the large amount of engineering, while the ductless fresh air system is more suitable for home use because of its easy installation. [0003] However, when the existing fresh air system is in...

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Problems solved by technology

[0003] However, when the existing fresh air system is in use, most of the dehumidification process requires additional heating equipment, which consumes a lot of energy and cannot recycle the heat of the equipment itself, resulting in energy waste. At the same time, the installation process is cumbersome and the installation efficiency is low. And It takes a long time to switch between heating and cooling, which is extremely impractical

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