Dual-purpose heat exchange multi-connection air conditioner device

Abstract

The invention provides a dual-purpose heat exchange multi-connection air conditioner device which comprises a compressor, a four-way valve, an indoor air cooled heat exchanger and an outdoor heat exchanging system. The outdoor heat exchanging system comprises a dual-purpose heat exchanger and a soil heat exchanger, wherein the soil heat exchanger is connected with the dual-purpose heat exchanger through an anti-freezing aqueous solution pipeline. The dual-purpose heat exchanger comprises a heat exchanger fan, fins, a refrigerating fluid channel and a water pump, an anti-freezing aqueous solution channel is formed in the refrigerating fluid channel, the soil heat exchanger is connected with the anti-freezing aqueous solution channel in series, the water pump is arranged on the anti-freezing aqueous solution pipeline, the fins are arranged on the outer side of the pipe wall of the refrigerating fluid channel in a welding mode, the heat exchanger fan is located above the refrigerating fluid channel, and outdoor air flows through the outer side pipe wall of the refrigerating fluid channel and the fins under the action of the suction force of the heat exchanger fan. By means of the dual-purpose heat exchange multi-connection air conditioner device, the building heat supplying problems that in winter, in part of northern areas, no heating municipal heat source exists and a low-temperature heat pump unit is too low in heating efficiency are solved, and the problem that soil heat supplying is invalid due to cold and hot load imbalance of a ground-source heat pump system in summer and winter is solved as well.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a dual-purpose heat exchange multi-connected air conditioner. Background technique [0002] In most heating areas without municipal heating sources in the north, due to environmental protection requirements, the use of small and medium-sized coal-fired boilers has been banned, and oil-fired boilers have also been banned in some areas. Now there are ground-source heat pump air-conditioning systems and water source multi-connected systems, but in the north In some areas, because the initial soil temperature is relatively low, and the heat load of building air conditioners is greater than the cooling load of air conditioners, ground source heat pump systems and water source multi-connected systems are not suitable for heating in such areas. [0003] For buildings in the above areas with heating and cooling needs, only other environmentally friendly heating devices can be used. At present, ultra...

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Problems solved by technology

[0002] In most heating areas without municipal heating sources in the north, due to environmental protection requirements, the use of small and medium-sized coal-fired boilers has been banned, and oil-fired boilers have also been banned in some areas. Now there are ground-source heat pump air-conditioning systems and water source multi-connected systems, but in the north In some areas, because the initial soil temperature is relatively low, and the heat load of building air conditioners is greater than the cooling load of air conditioners, ground source heat pump systems and water source multi-connected systems are not suitable for heating in such areas

[0003] For buildings in the above areas with heating and cooling needs, only other environmentally friendly heating devices can be used. At present, ultra-low temperature air-cooled heat pump units and ultra-low temperature variable refrigerant flow systems that can be applied above -30°C are being studied, but at -15°C The heating efficiency is very low when the temperature is below, and the heating efficiency decays rapidly as the temperature further decreases, making it very difficult to develop

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