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PRODUCT INFORMATION

Danfoss BFP 20 Size 5 Electromagnetic Valve-less Oil Pump | Medium-sized Domestic Burner 42 L/h

Product Information

Suitable for supplying fuel to medium-sized domestic diesel burners and boilers; shut-off is controlled by an external solenoid valve; both single-pipe and dual-pipe systems are compatible. Danfoss BFP 20 Size 5 Electromagnetic Valve-less Oil Pump | Medium-sized Domestic Burner 42 L/h

Original 丹麥, Size 5, larger capacity, basic structure without solenoid valve, easy to maintain.

流量需求較高、切斷集中控制的系統，泵端聚焦穩壓與維護

中型柴油燃燒器的供油流量高於小型機種，但在切斷由管路電磁閥集中控制的架構下，泵浦仍只需穩定調壓、易於維護。Danfoss BFP 20 Size 5 即以較大容量對應此需求，屬單段、無電磁閥的基本型油泵。

 

單段調壓的運作機制

燃油由吸入口經卡匣濾網進入齒輪組加壓，經含膜片之調壓閥將噴嘴壓力穩定於設定值；未經噴嘴的油於雙管系統回到回油口與油箱，單管系統（回油口封堵、移除換向螺絲）內部回到齒輪組。BFP 20 無電磁閥，噴嘴管路切斷須由外接電磁閥提供。

 

BFP 20 Size 5 的設計特色

卡匣式濾網 11 cm²／200 µm、前方調壓，壓力範圍 7–20 bar（出廠 10±1 bar），軸頸符合 EN 225，淨重約 1.06 kg。材料經生質相容處理，Bio100 版可相容至 100% 生質柴油。進回油 G 1/4、噴嘴出口 G 1/8。適用燃料為輕油、煤油及其生質摻配，不適用中重油、重油或船舶燃油。

 

同型比較：Size 3 與 Size 5

本頁為 Size 5（約 42 l/h）；較小流量見 BFP 20 Size 3。若需泵端自帶切斷、免另配管路電磁閥，改選含電磁閥的 BFP 21；若為兩段火需求則見 BFP 52E。容量選擇應對應燃燒器噴嘴需求，避免過度放大齒輪容量。

 

Application scenarios and system pairings

BFP 20 Size 5 適用中型家用柴油燃燒器與鍋爐供油，單管與雙管皆可，須配置外接切斷電磁閥。實務上建議前端搭配 diesel filter 以延長濾網與齒輪壽命。

丹麥原裝，Size 5 較大容量、無電磁閥之基本結構、易於維護技術講解

project content
Type 單段家用燃燒器油泵，內建調壓閥、無電磁閥（切斷須外接電磁閥）
capacity Size 5：約 42 l/h（@4.3 cSt, 10 bar, 2800 min⁻¹）
適用燃料 輕油、煤油及其生質摻配；DIN EN 51603-1、DIN EN 51603-6／-8 及 EN 14214（Bio100 版可至 100% FAME/UCOME）
管路系統 單管或雙管
壓力範圍 7–20 bar（1.3 cSt 上限 12 bar、1.8 cSt 上限 15 bar）
出廠設定壓力 10 ±1 bar
運作黏度 1.8–12 cSt（最低 1.3 cSt）
進油／回油耐壓 ≤ 2 bar
濾網 卡匣式，11 cm²／200 µm
轉速 1400–3450 min⁻¹
油溫 0–70°C
環境／運輸溫度 −20~+70°C
安裝 法蘭；軸頸依 EN 225
進／回油口 G 1/4
噴嘴出口 G 1/8
壓力／真空錶孔 G 1/8
weight 淨重約 1.06 kg
certified DIN CERTCO、SEMKO 電氣安全；RoHS／LVD 宣告

 

 

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