小方包

原帖由 CWPP 於 2008-10-9 15:01 發表


師兄, 聽你講完, 度 改唔改 我嗰隻好, 佢係反轉的......真大鑊

743263

係我......就會改

hamsterspeed

原帖由 k2t4 於 2008-10-9 20:50 發表


這個反轉的泵, 是用轉軸, 同 DDC / D5 設計唔同
743382

All DDC pump have the same design... the only difference between the models are improvement on the impeller and power settings. Different producer uses a different color of impeller to identify the model.

Also for your info the axle like stuff at the bottom of the DDC is for holding the Stator in place... is not the actual axle

CWPP

原帖由 k2t4 於 9-10-2008 20:50 發表


這個反轉的泵, 是用轉軸, 同 DDC / D5 設計唔同
743382

我嗰隻係 DDC 嚟.
...still.......thanks for the try

hamsterspeed

原帖由 Eric仔 於 2008-10-9 23:36 發表
K2T4大大無講錯 ,係唔可以反轉隻DDC用,否則會無承托......

同個承托冇關... 本身個葉輪/轉子已經有bearing 固定個位 係唔會就咁跌落黎
主要問題係你張個pump反轉放d 水會上唔到軸心等如乾行 咁係會好傷個pump條軸心
因為磁驅泵有一個限制 就係佢個bearing 係一定要有液體做潤滑(水) 否則係會磨損條軸心

CWPP

原帖由 小方包 於 9-10-2008 23:15 發表

係我......就會改

頭痕, 如要改, 要改埋水箱.....散晒........諗真啲先....

Athlon神64

原帖由 hamsterspeed 於 2008-10-10 01:39 發表


同個承托冇關... 本身個葉輪/轉子已經有bearing 固定個位 係唔會就咁跌落黎
主要問題係你張個pump反轉放d 水會上唔到軸心等如乾行 咁係會好傷個pump條軸心
因為磁驅泵有一個限制 就係佢個bearing 係一定要有液體做潤滑(水) 否則係會磨損條軸心

水位高D會唔會好D?

x850xtpe

原帖由 hamsterspeed 於 2008-10-10 01:39 發表


同個承托冇關... 本身個葉輪/轉子已經有bearing 固定個位 係唔會就咁跌落黎
主要問題係你張個pump反轉放d 水會上唔到軸心等如乾行 咁係會好傷個pump條軸心
因為磁驅泵有一個限制 就係佢個bearing 係一定要有液體做潤滑(水) 否則係會磨損條軸心

簡單D黎講, 根據mw^2r一式, radius係constant, mass reduce既話, w就上升, 而空氣既mass比水低咁多, w就會升到hihi, 咁樣電果part都可能燒埋
e個case係個泵裡面得空氣, 重有另外一個case係裡面全部都係水, 係potential energy問題, 而且離心泵冇自吸能力非常有限, 所以可能會唔work, 但就唔會傷泵

[ 本帖最後由 x850xtpe 於 2008-10-10 11:12 編輯 ]

hamsterspeed

原帖由 Athlon神64 於 2008-10-10 10:09 發表

水位高D會唔會好D?

問題係你點先整到個水位可以cover曬整rotor?

hamsterspeed

原帖由 x850xtpe 於 2008-10-10 11:05 發表

簡單D黎講, 根據mw^2r一式, radius係constant, mass reduce既話, w就上升, 而空氣既mass比水低咁多, w就會升到hihi, 咁樣電果part都可能燒埋
e個case係個泵裡面得空氣, 重有另外一個case係裡面全部都係水, 係potential energy問題, 而且離心泵冇自吸能力非常有限, 所以可能會唔work, 但就唔會傷泵

Seriously, it is meaningless to use a formula... it just "complicate" things up. It is very easy to understand: air is lighter than any cooling fluid, therefore if you position the pump upside down fluid will just pass through the top part of the impeller and leave you nothing in between the bottom part of the rotor and stator, which leads to overheat. And again, you will need fluid to fill in the gaps between the rotor, stator and the "stationary ball bearing" to avoid any abrasion to these components while the pump is operating.

if you still dont understand what the situation looks like i sugguest you to take a look at the pic posted by k2t4 early on on page 6.

The pump will still be able to spin without fluid even the pump is upside down, however you are taking the risk of damaging the pump.

I'm posting here to assist those who are willing to take my advise while I try my best to provide the most precise explaination as i can. Furthermore, I have NO intention to offense any individual members here, However please do not misleading the others while you are giving a wrong interpretation.

If you insist to place the pump upside down is all fine for me. Good Luck

p.s. sorry for my bad grammar

Edit: fixing my bad grammar

[ 本帖最後由 hamsterspeed 於 2008-10-10 21:30 編輯 ]