SINDFAN 轴流通风机在线选型系统SINDFAN 射流风机在线选型系统SINDFAN Axial Fan Selection SystemSINDFAN Jet Fan Selection System
Axial Fan Selection SystemJet Fan Selection System (by thrust)Online selection from standard performance dataThrust-based selection from SINDFAN CFD data
输入风量,以及静压 Ps 或全压 Pt,即可从 SINDFAN 标准产品性能数据中匹配可选型号,并查看规格书、性能曲线与外形图。选全压时页面按动压 Pd = 0.5·ρ·v² 逐台换算回静压再匹配。输入所需推力 F (N),即可从 SINDFAN 自研射流风机(SF-JT)性能数据中匹配可选型号。射流风机按推力选型:以 CFD 自由运行点为基准,按 F ∝ n²、Q ∝ n、P ∝ n³ 折算到目标推力,并卡住叶尖线速度与转速上限;结果表每一行都折算到同一推力,所以轴功率与单位功率推力可以直接横向比较。Enter the volume flow together with either the static pressure Ps or the total pressure Pt to match SINDFAN fan models from our standard performance data, with data sheet, curves and outline drawing. With total pressure the page converts back to static per model through the dynamic pressure Pd = 0.5·ρ·v².Enter the required thrust F (N) to match a SINDFAN SF-JT jet fan from our own CFD data. Jet fans are selected by thrust: the CFD free-running point is scaled by F ∝ n², Q ∝ n, P ∝ n³ to the requested thrust, inside the tip-speed and rpm limits. Every row is scaled to the same thrust, so shaft power and thrust per kW are directly comparable. Supply frequency: on 60 Hz the usable speed window of the same machine shifts by 1.2x (similarity); the tip-speed limit and the aerodynamic profiles stay unchanged.
射流风机按推力选型:以 CFD 自由运行点为基准,按相似定律 F ∝ n²、Q ∝ n、P ∝ n³ 折算到要求推力,并卡住叶尖线速度与转速上限。每行都折算到同一推力,所以轴功率、单位功率推力可以直接横向比。 供电频率:选 60 Hz 时,同一台机器的可用转速窗口按 1.2 倍平移(相似工况),叶尖限速与叶型口径不变;各机型在 60 Hz 下的自由点见随件《60 Hz 专表》。Jet fans are selected by thrust: the CFD free-running point is scaled by the similarity laws F ∝ n², Q ∝ n, P ∝ n³ to the requested thrust, inside the tip-speed and rpm limits. Every row is scaled to the same thrust, so shaft power and thrust per kW are directly comparable. Supply frequency: on 60 Hz the usable speed window of the same machine shifts by 1.2x (similarity); the tip-speed limit and the aerodynamic profiles stay unchanged.
输入所需推力后点「按推力选型」。Enter the required thrust and press Select.
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① 叶轮配置(手动选)Impeller configuration (manual)
② 目标直径Target diameter
③ 运行条件Running conditions
④ 工况点(可选)Duty point (optional)
填这两个数 → 图上画出风阻曲线并给出交点(与软件同法)Fill both to draw the system curve and compute the intersection (same method as the software).
⑤ 输出Output
输入工况后自动出曲线。The curve is produced as soon as the duty is entered.
静压 pst – 风量Static pressure – flow鼠标移到图上读数Hover to read
输入口径:老版把 Q、Ps 作为「工作点」输入,用 T = Ps/Q² 作系统阻力线(本页图表即按此画系统曲线);
温度:老版是下拉框 cb_fantemperature(40/70/100/150/200/250/300/350/400 ℃;叶轮窗体 cb_impTemperature = 40/250/300/350/400),
程序只拿它做「>250 ℃ 时请求静压 ×1.15」(0x4B52FE..0x4B5312)和规格书回显(SPEC_LC.TXT:Suitable for ambient air temperatures up to 40°C)。
机壳型式(Casing):老版把机壳代码存成全局字符串 [0x004DA32C](默认 LC,FormCreate 0x4D0888),
引擎按字符串而不是下拉序号取修正因子(0x4B5218..0x4B522C)。修正在逐个候选上加到请求静压上、且在包络闸门与弦位求解之前:
VP = 0.6·(Q/(π/4·(D/1000)²))²(0x4B5144..0x4B5198,就是本页 Dynamic 列),
Ps_eff = Ps·(1.2/ρ)(0x4B51E7..0x4B51F7),
再按代码加 VP×系数:LC 0.00、SC 0.20、BN 1.25、PA 0.50(系数即 REC\London.fac 的五个 float32),
TS 是除以 2.5(0x4B52CD..0x4B52D8)。因此换机壳会真的改变可选型号集合(例如 BN 会把选中的风机从 Φ800 推到 Φ900)。
本页对机型命名的处理(原程序此处有一处不一致):参考程序的机型下拉框文字顺序是 Long cased / Short cased / Bifurcated / Propax no duct / Two stage contra rotating / One running, one idling,
但 EXE 里两张「序号→代码」跳转表(0x4D605E 与 0x4D3028)都按 LC SC BN TS RI PA 输出,
于是第 4/5/6 项被接错了线:选「Propax no duct」实际发出 TS、选「Two stage contra rotating」实际发出 RI、选「One running, one idling」实际发出 PA。
程序自己的标签表(VA 0x4D4B60)证明本意是 TS = Two Stage、PA = Plate Mounted。
所以本页每一项都直接标注它真正驱动的代码 名称 (CODE),绝不让你选了名字却得到另一种机构。
请输入风量与静压 Ps(或全压 Pt)后点「选型」。Enter the volume flow and the static pressure Ps (or the total pressure Pt), then click Select.
#
档Slot
Model
材质Material
Hub
RPM
压力 Pt / Ps / Pd (Pa)Pressure Pt / Ps / Pd (Pa)
Peak kW @ρ
Sound dBW
Rating kW(电机铭牌功率)Rating kW (motor nameplate)
Eff%
判定Verdict
(暂无结果)(no results yet)
操作:Actions:
每个按钮只在其动作有意义时可用:没有可选型号时 Drawing / Specification / Print 保持禁用。Each button is enabled only when its action makes sense: with no selectable model, Drawing / Specification / Print stay disabled.