Micro-channel heat exchanger
A micro-channel heat exchanger and connected technology, applied in heat exchanger types, heat exchanger shells, indirect heat exchangers, etc., can solve the problems of low heat exchange efficiency of coaxial heat exchangers, and improve heat exchange. The effect of efficiency
Active Publication Date: 2014-06-04
GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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[0003] The purpose of the embodiments of the present invention is to provide a microchannel heat exchanger, aiming to solve the problem of low heat exchange efficiency of existing coaxial heat exchangers
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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] see Figure 2 to Figure 4 , the microchannel heat exchanger 100 (also referred to as a parallel flow heat exchanger) provided by the first embodiment of the present invention includes a first header 20 and a second header arranged side by side with the first header 20 30 and a plurality of first flat tubes 40 and a plurality of second flat tubes 50 connected between the first header 20 and the second header 30 .
[0024] The first flat tubes 40 and the second flat tubes 50 are arranged alternately and stacked in their thickness direction. The stacked thickness of the first flat tubes 40 an...
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The invention provides a micro-channel heat exchanger which comprises two flow collecting pipes, a plurality of first flat pipes and a plurality of second flat pipes. The second flat pipes are arranged alternatively and are overlapped in the thickness direction of the second flat pipes. Each flow collecting pipe is internally provided with a partition plate, wherein one partition plate divides the interior of the corresponding first flow collecting pipe into a first cavity and a first chamber, and the other partition plate divides the interior of the corresponding second flow collecting pipe into a second cavity and a second chamber. One end of each first flat pipe extends into the first cavity, and the other end of each first flat pipe extends into the second cavity. One end of each second flat pipe extends into the first chamber, and the other end of each second flat pipe extends into the second chamber. A first flow channel is commonly formed by the first cavity, the first flat pipes and the second cavity, and a second flow channel is commonly formed by the first chamber, the second flat pipes and the second chamber. The contact area of the first flat pipes and the second flat pipes is that of the flat plane in the width direction, the heat exchange surface of the single flat pipe occupies more than 80 percent of the total outer surfaces of the flat pipes, and the heat exchange efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of heat exchangers, in particular to a microchannel heat exchanger. Background technique [0002] In refrigeration, chemical industry, power and other fields, it is often necessary to transfer the cold or heat carried by the refrigerant to other liquid working medium (water or oil). In this case, a coaxial heat exchanger is usually used to exchange heat between the refrigerant and other liquid working fluids. The main structure of the coaxial heat exchanger is that a large tube 10 is set outside a small tube 11. The refrigerant goes through the outer big tube 10, and the water or oil goes through the middle small tube 11. In order to increase the heat exchange area, the middle small tube 11 is usually twisted into a spiral shape, such as figure 1 shown. The area A in the small tube 11 is the flow channel of the heat exchange medium water or oil, and the shaded area B between the large tube 10 and the smal...
Claims
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IPC IPC(8): F28D7/16F28F9/02
Inventor 张智冬
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD