Heat exchanger for carbon dioxide air-conditioning system
An air-conditioning system, carbon dioxide technology, applied in the direction of refrigeration and liquefaction, evaporator/condenser, lighting and heating equipment, etc., can solve the problems that the pressure resistance is not enough to withstand high pressure, copper is difficult to realize, etc., to achieve simple structure and easy structure Effect of compactness and ease of miniaturization
Inactive Publication Date: 2013-12-18
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
However, the defect and deficiency of this technology is that the flat tube structure of the serpentine flat tube heat exchanger is difficult to realize in the process of using copper, and the pressure resistance of aluminum is not enough to withstand the high pressure when used as a condenser in an automobile air conditioner.
Method used
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Embodiment 1
[0015] Such as figure 1 As shown, this embodiment includes: a distributor 4, a header 1 and a copper tube 2 connected in sequence, wherein: one end of the header 1 is used to distribute the refrigerant at the inlet and outlet of the heat exchanger and to be connected to the system, and the other end The coiled copper tube 2 is connected, and several fins 3 are arranged vertically on the copper tube 2 , the refrigerant side of the heat exchanger flows through the copper tube 2 , and the air side passes through the fins 3 in parallel.
[0016] The pipe diameter of the copper pipe 2 is below 5mm.
[0017] The fins 3 are made of aluminum.
[0018] The traditional vehicle air conditioner refrigerant R134a has a high GWP value and is more likely to produce the greenhouse effect. The environmentally friendly refrigerants that can replace vehicle air conditioners include HFO1234yf and carbon dioxide, but HFO1234yf is relatively expensive. Harmless, environmental protection and many ...
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The invention belongs to the technical field of air conditioners, and relates to a heat exchanger for a carbon dioxide air-conditioning system. The heat exchanger comprises a distributor, a header pipe and a copper pipe which are successively connected to one another, wherein one end of the header pipe is used for distributing refrigerating fluid of the inlet and the outlet of the heat exchanger and is connected with a system; the other end of the header pipe is connected with the coiled copper pipe; a plurality of fins are perpendicularly arranged on the copper pipe; a refrigerating fluid side of the heat exchanger passes through the copper pipe; and an air side of the heat exchanger penetrates in the fins in parallel. The heat exchanger with the small pipe diameter is quite easy to machine technologically, and requirements on pressure resistance and properties can be met. In addition, the heat exchanger is suitable for the volume-limited inside environment of an automobile, resists pressure, and is simple in structure.
Description
technical field [0001] The invention relates to a device in the technical field of air conditioning, in particular to a heat exchanger for a carbon dioxide air conditioning system. Background technique [0002] Under the background that the greenhouse effect is widely valued, various air-conditioning industries have set off an upsurge of replacing existing refrigerants. In household air-conditioning, the traditional R22 will gradually be replaced by R410A, R290, etc. due to its certain ODP and high GWP value. Other environmentally friendly refrigerants can be used instead, and car air conditioners are no exception. The traditional car air conditioner refrigerant R134a has a high GWP value and is more likely to produce a greenhouse effect. Environmentally friendly refrigerants that can replace car air conditioners include HFO1234yf, carbon dioxide, etc. However, HFO1234yf is relatively expensive. Carbon dioxide is favored by many businesses for its low price, safety and harml...
Claims
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IPC IPC(8): F25B39/00
Inventor 陈江平严瑞东黄嘉乐
Owner SHANGHAI JIAO TONG UNIV