The invention relates to a single-port horizontal single-pipe natural circulation compound electric water heater, which comprises a water storage tank and electric heating pipe fittings. The electric heating pipe fittings are composed of an inner tube, an outer tube and a heating element. The inner tube is a blind tube with an opening at one end and a closed end. The inner tube is inserted into the outer tube from the tail of the outer tube. The outer wall of the inner pipe is closed connected with the open end of the outer pipe, and the other end of the outer pipe is an open end; the heating element is sleeved on the outer wall of the inner pipe; an electric heating pipe fittings installation hole is arranged on the side wall of the water storage tank, and the electric heating pipe fittings are inserted into the water storage tank from the outside of the installation hole of the electric heating pipe fittings of the water storage tank, and the open end of the outer pipe and the electric heating pipe of the water storage tank. The installation hole is tightly closed, and the axis of the inner tube of the electric heating pipe is parallel to the horizontal plane. Its advantages are: high heat conversion efficiency, low heat loss, no fouling inside the pipe, safe and reliable use, rarely failures.
【技术实现步骤摘要】
单端口水平单管自然循环复合式电热水装置
本专利技术涉及一种单端口水平单管自然循环复合式电热水装置,属于热水器领域。
技术介绍
现有的电热水装置主要有电热水器、电热水锅炉等,加热方式有电阻式加热和电磁式加热。电阻式加热一般以内置加热元件为主,即:加热元件设置在储水箱内,电磁式加热一般采用外置加热元件。电阻式加热的加热元件主要采用电加热管,电加热管又有陶瓷加热管和金属加热管之分,其加热方式为热传导方式,优点是:能量转换率高、热损失小,缺点是:加热速度慢、电加热管表面结垢严重;电磁式加热的加热元件主要电磁线圈,其加热方式为电磁涡流加热,水管从电磁线圈中心穿过,优点是:水即过即热,加热速度快,水电分离,安全性高,缺点是:需要水泵驱动水进行循环加热,水管中易结垢堵塞水管。综上所述,无论是电阻式加热还是电磁式加热,加热管件本身结垢,是一个世界性难题,目前没有好的解决办法。对于小型电热水器,现有的防止结垢的方法是在储水箱内安装镁棒,该方法只能延缓加热管件结垢的速度,不能阻止结垢,而对于电热水锅炉而言,有在锅炉进水管上安装强磁装置的物理防垢方法,但效果并不十分明显,所以这种物理防垢只能用在小吨位锅炉之上,而对于大吨位锅炉,要求配备水处理装置,对水进行软化,这将大大增加锅炉的运行成本。对于电阻式加热方式,电加热管外壁结垢太厚,会阻止电阻丝的热量向外扩散,使得热量在电加热管集聚,造成加热元件过热而损坏;对于电磁式加热方式,水管中结垢会堵塞水管。加热管件结垢不好清除,不仅大大降低了电热水装置的换热效率,而且大大缩短了其使用寿命,甚至要经常更换加热元器件,造成电热水装置的使用成本 ...
【技术保护点】
1.一种单端口水平单管自然循环复合式电热水装置,包括储水箱、电加热管件,其特征是:电加热管件由内管、外管、发热元件组成,内管为一端开口另一端封闭的盲管,内管从外管的尾部插入外管中,仅开口端露外管之外,外管的尾端与内管的开口端外侧壁闭合连接,形成内、外套管结构,外管的另一端为开口端;发热元件套装在内管外侧壁上,发热元件的接线端子从外管的开口端引出;在储水箱的侧壁上开有电加热管件安装孔,电加热管件从储水箱的电加热管件安装孔外部插入储水箱中,外管的开口端与储水箱电加热管件安装孔密闭连接,且电加热管件内管的轴线与水平面平行。
【技术特征摘要】
1.一种单端口水平单管自然循环复合式电热水装置,包括储水箱、电加热管件,其特征是:电加热管件由内管、外管、发热元件组成,内管为一端开口另一端封闭的盲管,内管从外管的尾部插入外管中,仅开口端露外管之外,外管的尾端与内管的开口端外侧壁闭合连接,形成内、外套管结构,外管的另一端为开口端;发热元件套装在内管外侧壁上,发热元件的接线端子从外管的开口端引出;在储水箱的侧壁上开有电加热管件安装孔,电加热管件从储水箱的电加热管件安装孔外部插入储水箱中,外管的开口端与储水箱电加热管件安装孔密闭连接,且电加热管件内管的轴线与水平面平行。2.根据权利要求1所述的单端口水平单管自然循环复...
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