heat exchanger
A heat exchanger and aluminum fin technology, applied in the field of fin-and-tube heat exchangers, can solve problems such as difficulty in reducing manufacturing costs, difficulty in applying heat transfer tubes, etc., and achieve the effects of lowering heating temperature, inhibiting corrosion, and inexpensive manufacturing
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Embodiment 1
[0075] Examples of the heat exchanger described above will be described with reference to the drawings. Such as figure 1 As shown, the heat exchanger 1 has: an aluminum tube 2 , an aluminum fin 3 , a conduction portion 11 , and an adhesive layer 4 . Such as figure 1 and image 3 As shown, the aluminum fin 3 has an assembly hole 31 into which the aluminum tube 2 is inserted. Such as figure 1 and figure 2 As shown, the aluminum tube 2 is in contact with the aluminum fin 3 at the conduction portion 11 . Such as Figure 1 ~ Figure 3 As shown, the adhesive layer 4 is formed between the aluminum tube 2 and the aluminum fin 3 .
[0076] In addition, the aluminum pipe 2 is electrically connected to the aluminum fin 3 via the conduction portion 11 . Moreover, the natural potential of the surface of the aluminum tube 2 is higher than that of the surface of the aluminum fin 3 , and the potential difference between the two is 30 to 200 mV.
[0077] Such as figure 1 As shown, th...
experiment example 1
[0093] This example is an example of evaluating the performance of the heat exchanger 1 . The test body used for evaluation was produced as follows. In addition, among the code|symbol used below, the code|symbol similar to the code|symbol used in an Example represents the same component etc. as Example 1, unless otherwise specified.
[0094]
[0095] Ingots of aluminum alloys (alloys A1 to A7) having chemical compositions shown in Table 1 were sequentially hot-rolled, cold-rolled, annealed, and cold-rolled to produce aluminum sheets with a thickness of 0.1 mm. Pressing was performed on the obtained aluminum plate, and the aluminum fin 3 which has the same shape as Example 1 was produced. In addition, the aluminum fin 3 of this example has a length of 40 mm, a plate width of 20 mm, and a height of the collar portion 32 of 150 μm. In addition, three notches 311 are formed at equal intervals on the aluminum fin 3 . In addition, the symbol "Bal." in Table 1 is a symbol showin...
experiment example 2
[0123] This example is an example of evaluating the adhesiveness between the aluminum fin 3 and the aluminum tube 2 when the height of the collar portion 32 is changed variously. In this example, the test body was produced by the same method as Experimental Example 1 except having changed the height of the collar part 32 as shown in Table 3. FIG. And the evaluation of the adhesiveness of the obtained test body was performed by the method similar to Example 2.
[0124] In addition, in this example, the contact length of the collar part 32 and the adhesive bond layer 4 of the obtained test body was measured by the following method.
[0125]
[0126] Each test body was cut at the center of the plate width direction of the aluminum fin 3, so that image 3 The section shown is exposed. Then, an optical microscope image of the cross section is obtained. Based on the obtained optical microscope image, the length of the portion of the collar portion 32 in contact with the adhesiv...
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Abstract
Description
Claims
Application Information
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