Please select the most similar patent number from A, B, C and D. Which number is?
A dual-headed hand washing device having an anti-leak function, comprising liquid storage bottles (10), the tops of which are provided with liquid outlet holes (12) and air inlet holes (13), one-way inlet valves (14) being provided in the air inlet holes (13); a device head (20), connectedly affixed to the liquid storage bottles (10), and comprising a housing (21), the housing (21) being provided with two water outlets; a switch (51), arranged on the device head (20); sensors (70), arranged on a surface of the housing (21); a control circuit board (50), arranged inside the housing (21) and connected to the switch (51) and the sensors (70); micro-pumps (30), arranged inside the housing (21), connected to the control circuit board (50), and extending into the liquid storage bottles (10) by means of the liquid outlet holes (12); liquid extraction tubes (31), connected in one-to-one correspondence with the micro-pumps (30); and liquid outlet channels (40), arranged in between the micro-pumps (30) and the water outlets, there being two liquid outlet channels (40), and at least one liquid outlet channel (40) being provided with an atomizing nozzle (41). The provision of one-way inlet valves (14) in the air inlet holes (13) of the liquid storage bottles (10) of the present dual hand washing device prevents liquid in the liquid storage bottles (10) from leaking out from the air inlet holes (13) even if the hand washing device should fall over, thus preventing waste, and at the same time, preventing the liquid from corroding internal elements of the device head (20) and staining the exterior of the hand washing device.
A: A beauty instrument capable of guiding eye cream cleanly and hygienically, the beauty instrument comprising a main machine (1), a cover (3) covering the main machine (1), and a liquid storage bottle (2) connected to the main machine (1) and providing an eye cream liquid for the main machine (1). The main machine (1) comprises a machine body (11), a working portion (12) arranged at the top of the machine body (11), and a liquid conveying channel (13) in communication with the working portion (12); and a long guide pipe (21) is arranged at the top of the liquid storage bottle (2), the long guide pipe (21) is inserted into the liquid conveying channel (13) in a sleeved manner, and a liquid outlet I (21a) formed in the top of the long guide pipe (21) passes through the liquid conveying channel (13) directly to the working portion (12). The liquid outlet I (21a) of the long guide pipe (21) is in direct communication with a liquid outlet II (12a) of the working portion (12) of the main machine (1) of the beauty instrument, such that the eye cream can be directly conveyed to the working portion (12), thereby preventing the eye cream from contamination and deterioration after being left in the liquid conveying channel (13) in the middle, maintaining the cleanliness and hygiene of the whole beauty instrument during use and after use, and guaranteeing the action effect of the eye cream.
B: An atomizing nozzle (41) and a sensitive hand washing machine. The atomizing nozzle comprises: a water outlet member (100), a water outlet cavity (110) being provided on the water outlet member (100); a water outlet hole (120) provided at the bottom of the water outlet cavity (110); cyclone grooves (130) provided at the bottom of the water outlet cavity (110), the cyclone grooves (130) extending from the water outlet hole (120) to the side wall of the water outlet member (100), there being a plurality of cyclone grooves (130), and the cyclone grooves (130) being arranged clockwise or counterclockwise around the water outlet hole (120); and a blocking member (200) fixed in the water outlet cavity (110), a gap for liquid inlet being provided between the blocking member (200) and the side wall of the water outlet cavity (110). After the water outlet member (100) and the blocking member (200) are combined, liquid enters from the gap, passes through the cyclone grooves (130) and arrives at the water outlet hole (120) to be sprayed out, the liquid flows in the plurality of cyclone grooves (130) to form an effect of rotation, and naturally forms a mist spreading all around when sprayed out. The atomizing nozzle (41) of the present solution has the advantages of a simple structure, low production costs, and convenient assembly. The sensitive hand washing machine realizes atomization and spraying of liquid by means of the atomizing nozzle (41), without providing gear transmission, and has advantages in aspects such as volume, costs, production efficiency, etc.
C: Provided is a fragrance-spreading device, comprising an air pump (3), an atomizing head (2) and a liquid storage bottle (1). The atomizing head (2) is connected with the air pump (3) and the liquid storage bottle (1), the atomizing head (2) is internally provided with an atomizing cavity (20), and the atomizing head (2) is internally provided with an air channel (21) and a liquid channel (22); one end of the air channel (21) is in communication with the air pump (3) through a vent pipeline (31), the other end thereof is shrunk to form an air outlet opening (211); one end of the liquid channel (22) is in communication with the interior of the liquid storage bottle (1) through a liquid suction pipe (11), the other end thereof is shrunk to form a liquid outlet opening (221); the air outlet opening (211) is located on one side of the liquid outlet opening (221), and blows from one side of the liquid outlet opening (221) to the other side of the liquid outlet opening (221); the atomizing cavity (20) is in communication with the air outlet opening (211) and the liquid outlet opening (221); and the atomizing head (2) is also provided with a mist outlet opening (201) communicating with the atomizing cavity (20). The fragrance-spreading device is easy to manufacture, atomized particles of the essential oil are fine and smooth, and blocking does not tend to occur.
D: Disclosed is an atomizer (100). The atomizer comprises an e-liquid storage assembly (10) and an atomization assembly (30). The e-liquid storage assembly (10) is internally provided with an e-liquid storage cavity (13) and a vapor discharge channel (121) separated from each other; and the atomization assembly (30) comprises an atomization housing (31), an atomization cavity (213) is formed in the atomization housing (31), the atomization housing is provided with a vapor passing hole (3121) and an e-liquid intake channel (3131), the vapor passing hole (3121) and the e-liquid intake channel (3131) are both in communication with the atomization cavity, an e-liquid intake end of the e-liquid intake channel (3131) is in communication with the e-liquid storage cavity (13), a vapor discharge end of the vapor passing hole (3121) is in communication with the vapor discharge channel (121), and at least one sealing step (315) is provided between the e-liquid intake end of the e-liquid intake channel (3131) and the vapor discharge end of the vapor passing hole (3121). In the atomizer, at least one sealing step (315) is arranged between the e-liquid intake end of the e-liquid intake channel (3131) and the vapor discharge end of the vapor passing hole (3121), such that an aerosol forming substrate in the e-liquid storage cavity (13) that flows through the e-liquid intake end of the e-liquid intake channel (3131) is prevented from flowing into the atomizer (100) by means of the vapor discharge end of the vapor passing hole (3121), the atomizer (100) is prevented from leaking e-liquid, and the user experience is improved.
Answer: B