The utility model relates to a rotary joint for connecting a smoke collecting hood and a smoke exhaust pipe. Specifically, it is a rotary joint used for connecting the exhaust nozzle of the collecting hood of a range hood with the lower end of the exhaust pipe. The utility model comprises a smoke collecting hood and a smoke exhaust pipe, and a smoke exhaust outlet is arranged on the top of the smoke collecting hood. The utility model is characterized in that the smoke exhaust outlet is a circular hole, and the circumferential direction of the smoke exhaust outlet is uniformly distributed with a circular arc outer convex part, and the adjacent arc outer convex parts have spacing. The outer diameter of the smoke exhaust pipe is matched with the smoke exhaust nozzle. The outer side of the smoke exhaust pipe is circumferentially distributed with arc protrusions, the number of arc protrusions is equal to the number of arc protrusions, and the arc length of the arc protrusions is less than the arc length of the arc protrusions. The arc protrusions of the lower end of the smoke exhaust pipe are placed at the smoke exhaust nozzle edge of the corresponding spacing through the arc protrusions of the circumferential arc Pro Along the top. The rotary joint is not only easy to install and disassemble, but also beautiful. Suitable for kitchen range hood.
【技术实现步骤摘要】
集烟罩与排烟筒连接用旋转接头
本技术涉及一种抽油烟机。具体说,是抽油烟机的集烟罩的排烟口与排烟筒下端间连接用的旋转式接头。尤其适用于厨房的抽油烟机上。
技术介绍
目前,市场上销售的抽油烟机的集烟罩与排烟筒连接都是传统的连接方式。这种传统连接方式是采用螺钉将排烟筒的下端与集烟罩上的排烟孔四周间连接在一起。虽然采用这种连接方式可以实现排烟筒与集烟罩间的连接,但需事先在下筒的下端加工向外折边,并在向外折边和烟罩顶部的排烟孔四周加工与螺钉配合的螺孔,不仅安装和拆卸比较麻烦,而且由于螺钉暴露在外,很不美观。
技术实现思路
本技术要解决的问题是提供一种集烟罩与排烟筒连接用旋转接头。采用这种旋转式接头,不仅便于安装和拆卸,而且比较美观。本技术要解决的上述问题由以下技术方案实现:本技术的集烟罩与排烟筒连接用旋转接头包括集烟罩和排烟筒,集烟罩顶部有排烟口。其特点是:所述排烟口为圆形孔,其周向均布有圆弧形外凸部,相邻的圆弧形外凸部间均有间距。所述排烟筒外径与所述排烟口相适配,排烟筒邻近其下端的外侧面周向均布有弧形凸起,弧形凸起的数量与圆弧形外凸部的数量相等,且弧形凸起的弧长小于所述弧形外凸部的弧长,排烟筒下端的弧形凸起通过排烟口周向的圆弧形外凸部置于相应间距内的排烟口边沿上面。其中。排烟筒下端的弧形凸起和排烟口的圆弧形外凸部均为三个。由上述方案可以看出,由于所述排烟口周向均布有至少两个圆弧形外凸部,相邻的圆弧形外凸部间均有间距。所述排烟筒外径与所述排烟口相适配,排烟筒邻近其下端的外侧面周向均布有弧形凸起,弧形凸起的数量与圆弧形外凸部的数量相等,且弧形凸起的弧长小于所述弧形外凸部的弧长 ...
【技术保护点】
1.集烟罩与排烟筒连接用旋转接头,包括集烟罩和排烟筒,集烟罩顶部有排烟口;其特征在于:所述排烟口为圆形孔,其周向均布有圆弧形外凸部,相邻的圆弧形外凸部间均有间距;所述排烟筒外径与所述排烟口相适配,排烟筒邻近其下端的外侧面周向均布有弧形凸起,弧形凸起的数量与圆弧形外凸部的数量相等,且弧形凸起的弧长小于所述弧形外凸部的弧长,排烟筒下端的弧形凸起通过排烟口周向的圆弧形外凸部置于相应间距内的排烟口边沿上面。
【技术特征摘要】
1.集烟罩与排烟筒连接用旋转接头,包括集烟罩和排烟筒,集烟罩顶部有排烟口;其特征在于:所述排烟口为圆形孔,其周向均布有圆弧形外凸部,相邻的圆弧形外凸部间均有间距;所述排烟筒外径与所述排烟口相适配,排烟筒邻近其下端的外侧面周向均布有弧形凸起,弧形凸起的数量与圆...
【专利技术属性】
技术研发人员:马志红,王晨生,张小莹,陈成,
申请(专利权)人:无锡炬冉科技有限公司,
类型:新型
国别省市:江苏,32
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