Condensing device and air conditioning system with same

Abstract

The invention provides a condensing device and an air conditioning system with the same. The condensing device comprises a first heat exchanger and a second heat exchanger, the first heat exchanger isprovided with a first inlet allowing refrigerant to enter and a first outlet allowing the refrigerant to flow out after cooling and heat exchange, and the second heat exchanger is provided with a second inlet allowing the refrigerant to enter and a second outlet allowing the refrigerant to flow out after cooling and heat exchange; and a supercooling section of the second heat exchanger is provided with a third inlet which can communicate with the first outlet, the third inlet communicates with the first outlet through a middle pipe, so that fluid sequentially flows to the second heat exchanger from the first outlet, the middle pipe and the third inlet, and the pipe diameter of a first heat exchange pipe of the first heat exchanger is larger than the pipe diameter of a second heat exchangepipe of the second heat exchanger. According to the condensing device and the air conditioning system with the same, the flow speed of the refrigerant in a supercooling section heat exchange pipe isincreased, liquid film refrigerant on the wall face is rapidly taken away, the condensation heat exchange effect is effectively enhanced, the heat exchange amount is increased, and the filling amountof the refrigerant in a condenser is further reduced.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a condensing device and an air conditioning system with the same. Background technique [0002] As one of the important components of the refrigeration system, the condenser's heat transfer performance has a crucial impact on the performance of the system. Generally, the condenser can be divided into a gas phase region, a two-phase region and a subcooling region according to the state of the refrigerant. In the gas-phase region, the gas-phase refrigerant in the high-temperature and high-pressure state is gradually cooled by the forced convective low-temperature air in the heat exchange tube of the condenser; in the two-phase region, the state of the refrigerant is a gas-liquid two-phase state. The refrigerant gradually condenses into a liquid-phase refrigerant, and the thickness of the condensate on the inner wall of the heat exchange tube gradually increase...

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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the heat exchange effect of the subcooling section of the condenser in the prior art is poor due to the increased thermal resistance of the inner wall of the heat exchange tube, thereby providing a condensing device and an air conditioner having the same system

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