Structural engineers of domestic non-standard equipment love to build a skeleton with square steel and then throw it to industrial designers for modeling. Most industrial designers operate by "wearing clothes", that is, putting a sheet metal shell on the outside of the skeleton. The advantage of this is that the creative space is larger, the differentiation is larger, and the artistic degree is also higher. The disadvantage is that the cost increases more, not all equipment can afford to wear.
This work is limited by the requirements of air tightness and cost, and does not have the condition of "wearing clothes". Therefore, it can only make an issue of the details of the structural part itself, such as the modeling of the upper sheet metal structure, the oblique glass at the left rear of fig. 1, the matching of square steel model and rolling shutter door selection, the design of the dividing line of black and white paint, etc.
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