Method for controlling temperature/humidity of multi-on-line air conditioning system and multi-on-line air conditioning system

Abstract

The invention discloses a method for controlling temperature / humidity of a multi-on-line air conditioning system and the multi-on-line air conditioning system; the method comprises the following steps: converging first refrigerating fluid input by the switching unit of an outdoor unit with second refrigerating fluid input by the third end of the outdoor unit, compressing refrigerating fluid through a shunting unit; shunting the refrigerating fluid; outputting the first refrigerating fluid and the second refrigerating fluid respectively; outputting the second refrigerating fluid output by the shunting unit to the first end of an indoor unit through the first end of the outdoor unit, wherein the second refrigerating fluid passes through a second condenser and a second evaporator of the indoor unit orderly and is flowed out of the third end of the indoor unit and is reflowed to the shunting unit through the third end of the outdoor unit; and switching to output the first refrigerating fluid output by the shunting unit and flowing the first refrigerating fluid through a first condenser and a first evaporator orderly, and flowing the first refrigerating fluid into the shunting unit. According to the invention, the operation energy efficiency ratio of the multi-on-line air conditioning system can also be increased.

Description

technical field [0001] The invention relates to a multi-connected air conditioner control technology, in particular to a method for controlling temperature and humidity in a multi-connected air-conditioning system and the multi-connected air-conditioning system. Background technique [0002] With the continuous improvement of people's living standards, installing air-conditioning systems in living and indoor working environments to improve the comfort of living and working environments has become an important choice for people to improve their comfort needs. Among them, multi-connected air-conditioning technology is an important direction for the development of air-conditioning due to its advantages of free control, high efficiency and energy saving, and easy installation and maintenance. [0003] The multi-connected air conditioning system is mainly used to control the indoor temperature and humidity, and generally includes one or more outdoor units, one or more indoor unit...

AI Technical Summary

Problems solved by technology

The mass transfer inside the total heat exchanger is due to the pressure difference between the water vapor partial pressure in the outdoor fresh air and the indoor return air. The limited moisture permeability of the internal paper limits the heat and mass transfer capacity of the total heat exchanger, resulting in insufficient dehumidification in summer and insufficient humidification in winter

In addition, total heat exchangers cannot handle the indoor sensible heat load, where sensible heat is when heat is added or removed, causing a change in the temperature of a substance without a phase change

Sensible heat load control depends on the indoor unit terminal of the multi-connected air conditioning system. The joint use of the indoor unit terminal and the total heat exchanger makes the user's investment high and installation and maintenance inconvenient

[0006] It can be seen from the above that the existing means of cooling and dehumidification and the rotary dehumidification system are not suitable for multi-connected air-conditioning systems due to their low energy efficiency ratio and bulky size; while multi-connected air-conditioning systems use the combined application of indoor air supply terminals and total heat exchangers to Separately control the indoor temperature and humidity, but this leads to high user costs, and the indoor equipment is not compact enough, installation and maintenance are inconvenient, and the energy efficiency of the multi-connected air conditioning system is relatively low.

Images