Micro-channel pipeline heat exchanger and electric motor coach heat pump air conditioning system
A micro-channel and heat exchanger technology, applied in vehicle parts, heat exchange equipment, air treatment equipment, etc., can solve the problems of unfavorable heat exchange condensate removal, large flow resistance, etc., and achieve the effect of avoiding electrical corrosion.
Inactive Publication Date: 2016-09-14
HEFEI CARNOT AUTOMOTIVE AIR CONDITIONING
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Problems solved by technology
The heat pump air-conditioning system for electric passenger cars is mainly installed on the top of the passenger car, and the air is blown from the top or from both sides. Most of the fans used are centrifugal fans. Because the flat tube is horizontal (vertical after installation), the arc-shaped air flow has a large flow resistance in the fins of the micro-channel evaporator, which is not conducive to heat transfer and condensate removal
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[0015] A micro-channel heat exchanger is composed of a header 1, a micro-channel flat tube 2 and fins 3, the header 1 is a round tube with both ends closed and hollow, and the micro-channel flat tube 2 is The linear type is provided with microchannels 2-1 arranged in a linear array inside it, and the fins 3 are in the shape of regular broken lines; the microchannel flat tubes 2 are welded in a manner of overlapping up and down and equidistant Between the headers 1 , the microchannel flat tubes 2 are at an angle of 30-45 degrees to the horizontal plane; the fins 3 are welded between the microchannel flat tubes 2 .
[0016] Preferably, the equivalent diameter of the microchannel 2-1 is between 1.5-2.8mm.
[0017] Preferably, the microchannel 2-1 communicates with the hollow cavity of the manifold 1 .
[0018] Preferably, the material of the header 1 , microchannel flat tube 2 and fins 3 is aluminum.
[0019] A heat pump air-conditioning system for an electric passenger car inc...
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The invention relates to the field of air conditioners and accessories thereof, in particular to a micro-channel pipeline heat exchanger and an electric motor coach heat pump air conditioning system. The micro-channel pipeline heat exchanger is formed by a collecting pipe, micro-channel flat pipes and a fin. The collecting pipe is a hollow circular pipe with two sealed ends; the micro-channel flat pipes are in linear shapes internally provided with micro-channels arrayed and distributed according to a linear array; the fin is in a regular folding line shape; the micro-channel flat pipes are overlapped up and down and welded on the collecting pipe in an equidistant way; each micro-channel flat pipe and a horizontal plane form an angle of 30 to 45 degrees; the fin is welded between the micro-channel flat pipes. The micro-channel pipeline heat exchanger provided by the inventions is designed according to an air outlet way of a coach heat air conditioner and a flow field of air when a centrifugal fan rotates so as to have a function of effectively removing condensed water; besides, the micro-channel pipeline heat exchanger adopts aluminum parts, so that the electrocorrosion phenomenon is avoided after integral welding; after the micro-channel pipeline heat exchanger is installed on the electric motor coach heat pump air conditioning system, the system is ensured to be used stably and durably.
Description
technical field [0001] The invention relates to the field of air conditioners and their accessories, in particular to a micro-channel heat exchanger and a heat pump air conditioner system for electric passenger cars. Background technique [0002] A heat pump air conditioner is a dual-purpose air conditioner, which can cool down in summer and heat in winter. In addition to the characteristics of cold wind air conditioners when cooling, it also has the advantages of high energy saving efficiency, cleanliness, safety and comfort when heating. Therefore, heat pump air conditioners are very popular among people. [0003] At present, microchannel heat exchangers are only used as condensers in cold-only air conditioners. The use of microchannel heat exchangers as heat pump evaporators is mainly plagued by the removal of condensate on the fin surfaces. The heat pump air-conditioning system for electric passenger cars is mainly installed on the top of the passenger car, and the air...
Claims
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IPC IPC(8): F25B39/02F28F21/08F28F17/00B60H1/32
CPCF25B39/02B60H1/3227B60H1/3233F28F17/005F28F21/084
Inventor 张宇阳
Owner HEFEI CARNOT AUTOMOTIVE AIR CONDITIONING
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