巧妙地減小通風(fēng)管道的阻力是使用的關(guān)鍵

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(1)現(xiàn)象：板材表面不平整，厚度不平均，有顯著的壓痕、裂紋、砂眼、結(jié)疤和銹蝕等情況;風(fēng)管平面下沉，側(cè)面向外突出，有顯著的變形。

(1): the plate surface is not flat, the average thickness, significant indentation, crack, sand hole, scarring and corrosion etc.; the wind pipe sinking plane, side outwards, significant deformation.

(2)危害性：系統(tǒng)運(yùn)行時(shí)，風(fēng)管漏風(fēng)，造成不應(yīng)有的空調(diào)負(fù)荷損失，并且影響風(fēng)管的使用壽命;風(fēng)管表面顫抖，產(chǎn)生噪聲。

(2) harmfulness: when the system is running, the air leakage of the air duct will cause the loss of air conditioning load, and affect the service life of the air pipe. The surface of the wind pipe is shaking and producing noise.

(3)原因分析：制作風(fēng)管前，沒(méi)有對(duì)所用材料進(jìn)行質(zhì)量檢查;沒(méi)有丈量鋼板厚度。

(3) cause analysis: before making the duct, there is no quality check on the material used; there is no measurement of the thickness of the steel plate.

(4)防治措施：先檢查材料出廠合格證書和材料質(zhì)量證實(shí)，然后檢查材料外觀;丈量鋼板厚度。風(fēng)管翹角、扭曲及彎頭角度不正確。

(4) prevention and control measures: first check the material, the factory certificate and the quality of materials confirmed, and then check the appearance of the material; measuring steel thickness. The air pipe is warped, twisted and the angle of the elbow is incorrect.

(1)現(xiàn)象：矩形風(fēng)管兩相對(duì)平面不平行、兩端面不平行;折角不平直;對(duì)角線不相等;咬口不嚴(yán)。

(1) phenomenon: the rectangular air duct two is not parallel to the plane, and the ends are not parallel; the angle is uneven and straight; the diagonal is unequal; the bite is not strict.

(2)危害性：會(huì)使風(fēng)管連接受力不平均，安裝后的風(fēng)管不平直，法蘭盤墊片不嚴(yán)密，系統(tǒng)漏風(fēng)，造成空調(diào)負(fù)荷損失，并且縮短使用壽命;影響風(fēng)管、風(fēng)口安裝位置的正確。

(2) hazard: make wind force does not mean the connection, after the installation of the wind pipe is not straight, the flange gasket is not tight, resulting in the loss of system air leakage, air conditioning load, and shorten the service life; the influence of wind pipe, install the air position right.

(3)原因分析：板下料放樣不正確;風(fēng)管兩兩平行，相對(duì)面的板料長(zhǎng)度和寬度不相等;風(fēng)管的四角處咬口寬度不相等;咬口縫設(shè)置部位分歧錯(cuò)誤，手工咬口縫用力大小不一樣;未采取相應(yīng)的加固措施。

(3) analysis: plate cutting lofting is not correct; the wind pipe 22 parallel, relative surface sheet length and width are not equal; the four corners of the duct is not equal to width of bite; bite sew setting position error, manual bite sew force is not the same; did not take corresponding strengthening measures.

(4)防治措施：展開下料時(shí)，應(yīng)該對(duì)板料嚴(yán)格角方，對(duì)每片板料的長(zhǎng)度、寬度以及檢修對(duì)角線，使它們的偏差控制在答應(yīng)范圍內(nèi);下料后的板料，應(yīng)該將風(fēng)管相對(duì)面的兩片板料重合起來(lái)，檢修尺寸的正確性;板料咬口預(yù)留尺寸必需準(zhǔn)確，以保證咬口寬度一致;

(4) prevention measures: when feeding on the sheet should be strictly angle, for each piece of sheet length, width and maintenance of diagonal, so that their deviation control in promised range; sheet material, should be relatively the two wind pipe plate material overlap, right repair size; sheet bite size must be reserved to ensure accurate and consistent width of bite;

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