淺議GB4706.29—2008和相應IEC標準中第21.1條款

摘 要：該文通過對IEC60335-2-9：2006和IEC60335-2-6：2008標準以及國標中的第21.1條款的比較，淺談對家用便攜式電磁灶機械強度測試方法的個人理解。

關(guān)鍵詞：家用便攜式電磁灶 GB4706.29-2008 機械強度

中圖分類號：TM7文獻標識碼：A文章編號：1674-098X（2013）04（c）-0245-02

自2010年2月1日起，對于便攜式電磁灶產(chǎn)品已經(jīng)正式開始依據(jù)GB4706.29-2008《家用和類似用途電器的安全 便攜式電磁灶的特殊要求》和GB4706.1-2005《家用和類似用途電器的安全 第1部分：通用要求》標準對其進行強制性的認證檢測工作。GB4706.29-2008是針對便攜式電磁灶適用的標準，它是參考了IEC60335-2-9和IEC60335-2-6中對于電磁灶頭的要求部分，并根據(jù)國內(nèi)的實際情況將其延展為獨立的一類器具后形成的標準。對于駐立式電磁灶則按照GB4706.22的特殊要求進行試驗。該文通過對比IEC60335-2-9以及IEC60335-2-6標準中相應條款，結(jié)合實際測試試驗中的做法，對GB4706.29-2008中的第21.1條機械強度試驗談一點個人的理解。

1 IEC標準

IEC60335-2-9：2006中21.1條[1]：

21.1 Addition：

For appliances intended for outdoor use， the impact energy is increased to 0， 7 J.

If the appliance incorporates visibly glowing heating elements enclosed in glass tubes， the blows are applied to the tubes as mounted in the appliance if they are

located at the top of the oven and accessible to test probe 41 of IEC 61032；

located elsewhere in the oven and accessible to test probe B of IEC 61032.

For hotplates having surfaces of glass-ceramic or similar material， three blows are applied to parts of the surface that are not exposed to impacts during the test of 21.101， the impact energy being 0， 70 J ± 0， 05 J. The blows are not applied to surfaces within 20 mm of knobs.

NOTE 101 If the surface comprises a single piece of material， except for the outer frame， this test is not carried out.

僅針對電磁灶頭這部分來看，其意義應為：對于玻璃、陶瓷或類似材料制成的灶頭表面，對沒有暴露在21.101試驗的表面部分施加3次沖擊，沖擊能量為0.70J±0.05J。該沖擊不施加在距按鈕20 mm的表面。注：如果灶頭表面除了外部框架外是由一整塊材料構(gòu)成的，則該測試不進行。

. IEC60335-2-6：2008中21條[2]：

This clause of Part 1 is applicable except as follows.

Addition：

If the appliance has glass doors， three blows are applied to the center of the glass， the door being in the closed position. If the blows are also applied to the inside of the door when it is in the open position.

The glass shall not fracture.

If the appliance incorporates visibly glowing heating elements enclosed in glass tube， the blows are applied to the tubes as mounted in the appliance if they are

located at the top of the oven and accessible to test probe 41 of IEC 61032；

located elsewhere in the oven and accessible to test probe B of IEC 61032.

For hob surfaces of glass -ceramic or similar material， three blows are applied to parts of the surfaces that are not exposed to impacts during the test of 21.102， the impact energy being increased to 0，70 J ± 0，05 J. The blows are not applied to surfaces within 20 mm of knobs.

NOTE 101 If the hob surface comprises a single piece of material， except for the outer frame， this test is not carried out.

NOTE 102 additional support is not provided for the door in the open position.

同樣，針對電磁灶頭部分，其意義為：對玻璃、陶瓷或類似材料做的灶臺表面，三次沖擊施加于21.102試驗期間沒有暴露出來經(jīng)受沖擊的表面部分，沖擊能量增加為0.70J±0.05J。該沖擊不加在距按鈕20m m內(nèi)的表面。

注1：如果灶臺表面做成除了外部框架以外的一整塊，則不進行該試驗。

2 國家標準GB4706.29-2008

GB4706.29-2008《家用和類似用途電器的安全 便攜式電磁灶的特殊要求》中的第21.1條[3]內(nèi)容為：