CROSS REFERENCE TO THE RELATED APPLICATIONS

This application is based upon and claims priority to Chinese Patent Application No. 201810435629.7, filed on May 4, 2018, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present invention belongs to the field of electronic cigarettes, particularly relates to an e-juice dripping type atomizer in the field of electronic cigarettes.

BACKGROUND

Electronic cigarettes, as one of the alternative tobacco products, are gradually obtaining an acceptance of vast number of consumers. Thereinto, the electronic cigarette with e-juice injection type atomizer is popular among many smokers, because e-juice of different flavors can be injected as needed, leading to broader choice, and the high volume of smoke fully satisfies the consumers physically.

The key technology of the electronic cigarette is the design of the atomizer. In the prior art, it is common to introduce the e-juice in an e-juice tank onto a heating wire through a guide oil cotton. The e-juice is heated and atomized on the heating wire to generate smoke.

The drawbacks widely existing in the existing atomizers are as below. The e-juice is stored in a non-hermetic environment, and the e-juice in the e-juice tank is in a large-area contact with air, tending to cause the oxidation of e-juice, thereby affecting the quality of the e-juice, and greatly reducing the smoking experience. In addition, when the atomizer is placed sideways or reversely, e-juice leaking phenomenon is readily to occur. Moreover, since the viscosity of the e-juice is relatively large, the inlet hole is prone to be blocked. The way to address this issue is complicated and hard to operate, and during the operation, the e-juice is very likely to overflow, thus contaminating using environment.

The prior art has other drawbacks as follows.

1. There are excessive injection holes and guild oil cotton inserting holes, and the highest surfaces of the holes are not in a same plane. Consequently, the e-juice may readily flow out from other holes except for the injection holes when injecting the e-juice;

2. The hole diameter of the injection hole is a bit small due to the limitation of the structure and size. Since the e-juice is a highly viscous liquid with a large surface tension, the injection hole is readily blocked, causing a failure of e-juice injection. The way to solve this issue is complicated and has poor operability. Moreover, the e-juice overflows readily during operation to pollute using environment;

3. The e-juice is delivered from bottom to top through the guild oil cotton. With the consumption of the e-juice during the operation, the liquid level of the e-juice changes to make an oil guide effect variable, causing a variation of the oil guide volume, affecting an atomizing effect of the atomizer, and entailing impacts on consumers' experience of the smoke volume and flavor;

4. When the storage volume of the e-juice is low or pretty low, the guide oil cotton cannot deliver all of the e-juice to the atomizer base, which tends to cause heating without liquid. Besides, a small amount of the remaining e-juice should be completely removed when replacing different kinds of e-juice. The operating process is complicated and wastes the e-juice;

5. The atomizer base is close to the cigarette filter, the heater is provided above the atomizer base and closer to the cigarette filter, and a heat transfer between the heater and the cigarette filter and the high-temperature smoke may burn users' mouth;

6. Because of the limitation of the structure, an air inlet channel and the heater are basically on a same plane, or the air inlet channel is a bit lower than the heater. Besides, this type of air inlet channel has a relatively small inlet hole, so the inhaled air cannot take most of the smoke produced by atomization away, resulting in that the accumulated heat burns out the guild oil cotton. Moreover, the e-juice delivered to the heater is prone to leaking through the air inlet holes.

7. The atomization process of the atomizer is not observable, and actions cannot be taken in time when an abnormal situation occurs during use.

The objective of the present invention is to solve the above-mentioned problems.

SUMMARY

The present invention provides an e-juice dripping type atomizer which includes:

an e-juice storage tank, wherein a sealed surface at a lower end of the e-juice storage tank is provided with at least one oil-dropping hole; a piston cylinder is sleeved in an opening of an upper end of the e-juice storage tank; a piston rod is provided in the piston cylinder, and an upper part of the piston rod is detachably connected to a cigarette filter; and

a heating wire located at an outlet of the oil-dropping hole.

Specifically, when the piston rod moves downward, the air above an e-juice in the e-juice storage tank will be compressed and pressurized, thereby pushing the e-juice gradually to drip through the oil-dropping hole at a bottom of the e-juice storage tank. Preferably, the piston rod is provided with a scale to show a movement of the e-juice, assisting users to check and control an oil-dropping amount.

Preferably, an inner tank and an outer tank are successively provided outside the e-juice storage tank and the heating wire. The outer tank is fixedly connected to an atomizing outer tube. A side wall of the atomizing outer tube is provided with an air inlet hole. A gap enclosed by the air inlet hole, the inner tank and the outer tank and a gap between the e-juice storage tank and the inner tank collectively define a U-shaped airflow channel accessed to the cigarette filter eventually.

Preferably, the cigarette filter is fixed on a top of the outer tank through a cigarette filter base. The cigarette filter base is provided with an arc-shaped vent hole configured to connect the U-shaped airflow channel to the cigarette filter.

Preferably, a gas adjusting ring is sleeved outside the air inlet hole. An overlap area between the gas adjusting ring and the air inlet hole is adjustable, so as to adjust an air inflow.

Preferably, the piston rod is contained in a cigarette filter cap. An elastic mechanism is provided inside the cigarette filter cap. An end of the elastic mechanism abuts against a lower surface of the cigarette filter, and the other end of the elastic mechanism abuts against an upper surface of the cigarette filter base.

Preferably, the inner tank and the outer tank are all or partially transparent.

The present invention has the following advantages.

1. The e-juice storage tank is airtight. The e-juice storage tank is hermetic as a whole except for the oil-dropping hole at the bottom of the e-juice storage tank contacting air, minimizing a contact area between the e-juice and air, and prolonging the e-juice storage time.

2. Extremely small oil-dropping holes are provided at the bottom of the e-juice storage tank, and the e-juice can drip from the oil-dropping hole only by applying external force to push the piston rod from the top of the e-juice storage tank. Without pushing the piston, whatever angle the atomizer is placed at, the e-juice will not leak out, which basically eliminates oil leakage phenomenon.

3. Precisely control the oil-dropping amount: the volume of e-juice employed for each time is adjusted and controlled by observing the scale on the piston rod, the volume of e-juice used for each time is controllable, and the use process is convenient.

4. The design of the U-shaped airflow channel has the following advantages. When air flows between the outer tank and the inner tank via the air inlet hole, the outer tank and the inner tank may be cooled down to reduce the temperature of the outer tank to avoid hands being burnt. When the air carrying the smoke produced by the heating wire flows between the inner tank and the e-juice storage tank, the e-juice storage tank storing a large amount of e-juice functions as a cooling device capable of reducing the temperature of the smoke, thus preventing the smoke from burning users' mouth. Moreover, the e-juice condensed on an outer wall of the e-juice storage tank can flow back to the heating wire for recycling.

5. The atomization effect will not be affected by the e-juice storage amount. The oil-dropping hole of the e-juice storage tank is located at the bottom of the e-juice storage tank. The volume of e-juice employed by pushing and compressing the piston rod for each time is not affected by the e-juice storage amount, thereby not affecting the atomization effect.

6. The inner tank and the outer tank are all or partially transparent, so the users can conveniently observe the atomization process of the whole heater from the outside, mastering the operating state of the atomizer in real time, so as to correspondingly take reasonable actions in time.

