Central air-conditioning air circulating system

Abstract

The invention relates to a central air-conditioning air circulating system. The central air-conditioning air circulating system comprises an air inlet main tube, an air return main tube and an air feeding main tube, wherein the air inlet main tube, the air feeding main tube and the air return main tube are in communication; a plurality of branch tubes are in communication on the air feeding main tube; the air return main tube is in communication with a plurality of air return tubes; heat exchange devices for gas cooling are arranged inside sides, away from the air feeding main tube, of the branch tubes; an air inlet which communicates with the indoor is formed in the air inlet main tube; a fan coiled tube for gas cooling is arranged on a position, between the air inlet and the air inlet main tube, of the air inlet main tube; a filter assembly is arranged on a position, between the fan coiled tube and the air feeding main tube, in the air inlet main tube; one side, close to the air inlet main tube, of the air return main tube communicates with an air exhaust tube which communicates with the outdoor; the fan coiled tube and the heat exchange devices are connected to refrigerating units; and flow-limiting mechanisms are arranged inside the air inlet main tube and the air exhaust tubes. The air-conditioning system disclosed by the invention can provide fresh air to the indoor during a flu period or when a virus breaks out, so that life health of staff is guaranteed.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a central air conditioning air circulation system. Background technique [0002] The central air-conditioning system is composed of one or more cold and heat source systems and multiple air-conditioning systems. The principle of liquefied gas refrigeration is used to provide the required cooling capacity for the space adjustment system, but the function of the central air-conditioning is limited to the adjustment of indoor temperature. The fresh air system can circulate the air indoors and outdoors. [0003] Existing, disclose a kind of central air-conditioning system with fresh air function as Chinese Utility Model Notice No. CN208750858U, comprise the central air-conditioning that provides cold and warm air, curved air supply pipe and return air system, return air system comprises return air pipe, fireproof Insulation flexible pipe and air mixing chamber, the air retu...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: under the premise of ensuring indoor air quality, the central air-conditioning system can play the functions of energy saving and emission reduction; Indoor gas is continuously recycled. If indoor individuals carry infectious germs, these germs will follow the gas to circulate indoors, which will easily cause collective infection of indoor personnel and endanger health.

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