Vapers who are tired of leaky pods and stale e-liquid might want to keep an eye on a fresh utility model patent out of Shenzhen. Wulun Technology Co., Ltd. has been granted a Chinese patent for a manual liquid-feeding structure that physically separates the e-liquid tank from the atomizer chamber until the moment you choose to vape.
The patent, titled “Manual e-liquid feeding structure for electronic cigarette oil tank and atomizer chamber,” was published on May 8, 2026, under authorization announcement number CN224206174U. It was filed on April 23, 2025, with inventor Guo Ruyun named on the application.
How the idea works
Instead of relying on passive wicking or automatic pressure equalization that can slowly flood the coil when you’re not using the device, this design lets the user decide exactly when to transfer liquid from the tank to the heating element. The force can be applied in any natural motion — pull, push, twist, snap, spring action, you name it. That manual trigger is the core of the patent: no liquid moves until you make it move.
Before first use, the e-liquid sits entirely isolated from the atomizer core. The tank is transparent and free of any internal components, so there’s nothing inside that could taint the juice over time or create hidden seepage paths. The result is a storage condition that aims to keep the e-liquid as fresh as the day it was filled, while virtually eliminating the risk of accidental leaks during carry or shelf time.
The company behind the patent
Wulun Technology, founded in January 2011 and based in Bao’an District, Shenzhen, is a mid-sized manufacturer in the computer, communication, and electronic equipment sector. Led by legal representative Zhong Ming, the company has a registered capital of 33.79 million RMB. Public records show a steady build-up of intellectual property: 224 patents, 162 trademarks, and 13 administrative licenses, plus one external investment. The firm operates from a multi-site registered address at Building 6, Phase 3, Yangbei Industrial Zone, Huangtian Community, Hangcheng Street.
Why it matters
In a market where many devices still fight the twin frustrations of spit-back from flooded coils and the slow oxidation of e-liquid sitting permanently in contact with cotton, a manual feed that keeps the two chambers completely independent until activation is a practical twist. It doesn’t rely on complex valving or tiny silicone seals that wear out — it just gives control back to the vaper. For anyone who prioritises flavour purity and pocket-friendly reliability, this patent signals that at least one manufacturer is thinking hard about genuinely cleaner separation.
The patent agent listed on the filing is Li Jingya of Shenzhen Huayi Zhilin Intellectual Property Agency (general partnership), and the IPC classifications cover A24F40/40, A24F40/10, A24F40/42, A24F40/46, and A24F40/48.