Please select the most similar patent number from A, B, C and D. Which number is?
The invention discloses a direct liquid type writing tool. The writing tool comprises a pen body (4), a writing element (1), an ink absorbing body (2, 13) and a fiber water leading core (3). At least one gas and liquid balancer (5) is arranged in the pen body (4) in the axis direction thereof, and is arranged in an annular gap formed by the fiber water leading core (3) and the pen body (4). One or more gas and liquid exchange grooves (9) penetrating the outer circumference face of the gas and liquid balancer (5) and having the capillary force effect on ink is arranged on the outer circumference face of the gas and liquid balancer (5). An overflow groove (10) is formed in the radial face of the gas and liquid balancer (5), one end of the overflow groove (10) makes contact with the fiber water leading core (3), and the other end of the overflow groove (10) is communicated with the gas and liquid exchange groove (9), and the outer circumference face of the fiber water leading core (3) and the inner hole wall of the gas and liquid balancer (5) are in a gapless fit or an interference fit.
A: An electronic atomizing device, and an atomizer (100) thereof. The atomizer (100) comprises a housing (110) and a base (120). The housing (110) is fitted over the base (120); a liquid storage cavity (141) is formed on the inner side of the housing (110); at least one air-liquid balancing component (150) and at least one air inlet (1430) communicated with the at least one air-liquid balancing component (150) are further comprised; the at least one air-liquid balancing component (150) is mounted on the base (120) and is provided at the lower part of the liquid storage cavity (141); each air-liquid balancing component (150) comprises a column body extending toward the liquid storage cavity (141) and a liquid storage and air exchange structure at the circumference of the column body; the liquid storage and air exchange structure comprises at least one air return tank (153) and a plurality of liquid storage tanks (1510, 1520); one end of the air return tank (153) is communicated with the liquid storage cavity (141), and one end is communicated with the air inlet (1430) for regulating the air-liquid balance in the liquid storage cavity (141). The atomizer (100) has advantages of smooth supply of a liquid medium, high safety performance, and being not easy to leak.
B: An electronic atomization device and an atomizer (100) having same. The atomizer (100) comprises an atomization component (130), a liquid storage cavity (141) connected to the atomization component (130) for liquid conduction, and a gas channel communicated with the atomization component (130) for gas conduction. The atomizer (100) further comprises a gas-liquid equilibrium element (150) and a gas inlet (1430) communicated with the gas-liquid equilibrium element (150). The gas-liquid equilibrium element (150) comprises liquid storage tanks (1510, 1520) with capillary force function and a gas return groove (153). One end of the gas return groove (153) is communicated with the liquid storage cavity (141), and the other end is communicated with the gas inlet (1430). The gas return groove (153) is communicated with the liquid storage tanks (1510, 1520) such that the liquid storage tanks (1510, 1520) are communicated with the liquid storage cavity (141). The gas-liquid equilibrium element (150) can balance the gas pressure in the liquid storage cavity (141), facilitate liquid discharge, prevent dry burning, and prevent liquid leakage caused by gas pressure imbalance.
C: A liquid guide element (200) and a scribble tool (1). A three-dimensional network structure is provided inside the liquid guide element (200) and the liquid guide element (200) can absorb and release liquid. One side of the liquid guide element (200) contacts the liquid in the liquid storage element (100) of the scribble tool (1). A gap D is provided between the liquid guide element (200) and the inner wall of the liquid storage element (100). The diameter of the maximum inscribed circle of the gap D is between 0.03 mm and 0.25 mm. The liquid guide element (200) controls the gas-liquid exchange of the scribble tool (1). By providing the gap between the liquid guide element (200) and the inner wall of the liquid storage element (100), the liquid guide element (200) can control the gas-liquid exchange of the scribble tool (1), thereby satisfying the performance requirements of different scribble tools (1).
D: An electronic atomization device and an atomizer (100) thereof. The atomizer (100) comprises a housing (110) and an atomization assembly (130) provided in the housing (110); a liquid storage cavity (141) is formed inside the housing (110), and the atomizer further comprises at least one liquid guide element (160), an air-liquid balancing element (150), and an air inlet (1430) communicated with the air-liquid balancing element (150); the air-liquid balancing element (150) comprises a through hole (1560) and an liquid storage and air exchange structure (252) located at the periphery of the through hole (1560); the at least one liquid guide element (160) is correspondingly inserted into the through hole (1560), and the liquid storage cavity (141) is in liquid guide connection with at least one end of the atomization assembly (130); the liquid storage and air exchange structure (252) is provided at the periphery of the atomization assembly (130) and comprises at least one return air tank (153) and a plurality of liquid storage tanks (1510, 1520); one end of the return air tank (153) is communicated with the liquid storage cavity (141), and the other end is communicated with the air inlet (1430); the liquid storage tanks (1510, 1520) are at least partially connected to the at least one liquid guide element (160) to balance liquid supply of the at least one liquid guide element (160). The atomizer (100) has the advantages of being smooth in liquid medium supply and not prone to leakage.
Answer: C