Full
Outline
Aiming at the discomfort of the human body caused by “direct cold air blowing” under the refrigeration condition of household air conditioners，a double‑layer air deflector soft air structure is proposed and verified.Based on the principles of airflow softening and human thermal comfort，the classification of comfortable wind speed is proposed.Fluent was used to carry out parametric simulation of the double‑layer air guide plate，and the effects of nozzle width，nozzle bias，number of outer round holes and layout on the axial wind speed，≤0.3 m/s coverage and air volume at 1 m，2 m and 2.5 m in front of the air outlet were investigated.The wind speed distribution and air volume comparison test are carried out on the prototype.The results show that compared with the existing single‑layer microporous air deflector，the airflow softening rate of the double‑layer air deflector has been improved，the axial wind speed is softened by at least 42%，the soft wind range is increased by at least 25%，and the soft air volume is increased by at least 43%，and the overall soft wind effect meets the comfort standard of soft wind above grade A.The research results can provide a reference for the design of air conditioning soft air structure.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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