AIR EXTRACTOR
An air extractor including a liquid cavity, an air extracting cavity, a connection channel, a drainage channel, and an air extracting channel. The liquid cavity contains rotating liquid and the air extracting cavity has liquid therein. The liquid in the air extracting cavity is in communication with the liquid cavity through the connection channel, the liquid cavity drains the liquid through the drainage channel. The air extracting cavity is in communication with an object to be subjected to air extraction through the air extracting channel and air in the object to be subjected to air extraction flows through the air extracting channel into the air extracting cavity.
The present application claims priority to Chinese Application No. 202210553496X entitled “AIR EXTRACTOR,” filed May 20, 2022. The entire contents of the above-listed application are hereby incorporated by reference for all purposes.
TECHNICAL FIELDThe present disclosure pertains to the technical field of negative pressure generation, and relates to an air extractor.
BACKGROUNDA centrifugal air extracting pump can produce a negative pressure and use the negative pressure to extract air. An operating principle of the centrifugal air extracting pump is shown in
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- (1) Increasing the radial size of the rotational air flow also leads to larger volume and poor portability of the centrifugal air extracting pump. In addition, it is difficult to produce large-size blades. When the blades are rotating, resistance increases, and the blades are easy to break. A moment arm of the resistance is large, and thus a moment of the resistance is large, which leads to inefficient operation of the motor.
- (2) Although increasing the rotating speed of the blades may increase the centrifugal inertia force, the rated speed of the motor cannot be increased indefinitely, usually only 3000 rpm to 5000 rpm. Therefore, the rated speed of the motor limits the increase of the centrifugal inertia force.
An objective of the present disclosure is to provide an air extractor to overcome the disadvantages of the prior art. The air extractor extracts air by using negative pressure generated by the rotational liquid flow. The air extractor generates high air extraction pressure and small vibration and noise, and is easy to manufacture and has a small volume.
The present disclosure uses the following solutions to achieve the foregoing objective:
An air extractor, including a liquid cavity, an air extracting cavity, a connection channel, a drainage channel, and an air extracting channel, where the liquid cavity contains rotating liquid, the air extracting cavity has liquid therein, the liquid in the air extracting cavity is in communication with the liquid cavity through the connection channel, the liquid cavity drains the liquid through the drainage channel, a communication position of the connection channel and the liquid cavity is closer to the center of the rotating liquid in the liquid cavity than a communication position of the drainage channel and the liquid cavity, the air extracting cavity is in communication with an object to be subjected to air extraction through the air extracting channel, and air in the object to be subjected to air extraction flows through the air extracting channel into the air extracting cavity.
In the foregoing technical solution, further, the air extracting cavity includes two or more air extracting sub-cavities. Accordingly, corresponding to the air extracting sub-cavities, the drainage channel includes two or more drainage sub-channels, the air extracting channel includes two or more air extracting sub-channels, and the connection channel includes two or more connection sub-channels. The air extracting sub-cavity is in communication with the liquid cavity through the drainage sub-channel. The air extracting sub-cavity is further in communication with the liquid cavity through the connection sub-channel. The air extracting sub-cavity is in communication with the object to be subjected to air extraction through the air extracting sub-channel. In addition, an environment channel is further disposed on the air extracting sub-cavities, the environment channel includes two or more environment sub-channels, and the air extracting sub-cavity is in communication with an external environment through the environment sub-channel. The air extractor further includes switching mechanisms for controlling opening and closing of the channels.
Further, a first switching mechanism is disposed on the connection sub-channel, a second switching mechanism is disposed on the drainage sub-channel, a third switching mechanism is disposed on the air extracting sub-channel, and a fourth switching mechanism is disposed on the environment sub-channel.
For the foregoing device, continuous air extraction of the device is achieved through the following switching actions:
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- (1) Denoting one or more of the air extracting sub-cavities as an air extracting sub-cavity A, opening the corresponding first switching mechanism and third switching mechanism, and meanwhile, closing the corresponding second switching mechanism and fourth switching mechanism, performing operation on one or more of the remaining air extracting sub-cavities and denoting the same as an air extracting sub-cavity B, opening the corresponding second switching mechanism and fourth switching mechanism, and meanwhile, closing the corresponding first switching mechanism and third switching mechanism;
- (2) Starting the device, to form a rotational liquid flow in the liquid cavity, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity A through the air extracting sub-channel corresponding to the air extracting sub-cavity A, and causing the liquid to enter the air extracting sub-cavity B through the drainage sub-channel corresponding to the air extracting sub-cavity B;
- (3) Before the liquid level of the liquid in the air extracting sub-cavity A is reduced to a communication position between the connection sub-channel and the air extracting sub-cavity A, closing the first switching mechanism and the third switching mechanism corresponding to the air extracting sub-cavity A and the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity B, and opening the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity A and the first switching mechanism and the third switching mechanism corresponding to the air extracting sub-cavity B, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity B through the air extracting sub-channel corresponding to the air extracting sub-cavity B, and causing the liquid to enter the air extracting sub-cavity A through the drainage sub-channel corresponding to the air extracting sub-cavity A;
Repeating (1) to (3) to control opening and closing of the switching mechanisms on the air extracting sub-cavity A and the air extracting sub-cavity B, thereby achieving continuous extraction of the air in the object to be subjected to air extraction.
Alternatively, continuous air extraction of the device is achieved through the following switching actions:
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- (1) Denoting one or more of the air extracting sub-cavities as an air extracting sub-cavity A, opening the corresponding first switching mechanism and third switching mechanism, and meanwhile, closing the corresponding second switching mechanism and fourth switching mechanism, performing operation on one or more of the remaining air extracting sub-cavities and denoting the same as an air extracting sub-cavity B, opening the corresponding second switching mechanism and fourth switching mechanism, and meanwhile, closing the first switching mechanism and the third switching mechanism;
- (2) Starting the device, to form a rotational liquid flow in the liquid cavity, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity A through the air extracting sub-channel corresponding to the air extracting sub-cavity A, and causing the liquid to enter the air extracting sub-cavity B through the drainage sub-channel corresponding to the air extracting sub-cavity B;
- (3) Before the liquid level of the liquid in the air extracting sub-cavity A is reduced to a communication position between the connection sub-channel and the air extracting sub-cavity A, closing the first switching mechanism corresponding to the air extracting sub-cavity A and the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity B; and opening the third switching mechanism corresponding to the air extracting sub-cavity B to enable the air extracting sub-cavity A to be in communication with the air extracting sub-cavity B, then closing the third switching mechanism corresponding to the air extracting sub-cavity A, and opening the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity A and the first switching mechanism corresponding to the air extracting sub-cavity B, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity B through the air extracting sub-channel corresponding to the air extracting sub-cavity B, and causing the liquid to enter the air extracting sub-cavity A through the drainage sub-channel corresponding to the air extracting sub-cavity A;
- (4) Before the liquid level of the liquid in the air extracting sub-cavity B is reduced to a communication position between the connection sub-channel and the air extracting sub-cavity B, closing the first switching mechanism corresponding to the air extracting sub-cavity B and the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity A; and opening the third switching mechanism corresponding to the air extracting sub-cavity A to enable the air extracting sub-cavity A to be in communication with the air extracting sub-cavity B, then closing the third switching mechanism corresponding to the air extracting sub-cavity B, and opening the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity B and the first switching mechanism corresponding to the air extracting sub-cavity A, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity A through the air extracting sub-channel corresponding to the air extracting sub-cavity A, and causing the liquid to enter the air extracting sub-cavity B through the drainage sub-channel corresponding to the air extracting sub-cavity B;
Repeating (3) and (4) to achieve continuous extraction of the air in the object to be subjected to air extraction.
Further, an air bubble channel and an air bubble collection cavity are disposed on the liquid cavity, where the air bubble collection cavity is in communication with the liquid in the liquid cavity through the air bubble channel, and air bubbles in the liquid cavity enter the air bubble collection cavity through the air bubble channel under the effect of buoyancy.
Further, the device includes an air release channel and an air release mechanism, where the air release mechanism is in communication with the air bubble collection cavity through the air release channel, to exhaust the air in the air collection cavity.
Further, an air-liquid blocker is disposed in the air extracting cavity, and the air-liquid blocker is configured to reduce contact between the air and the liquid, and the air-liquid blocker can move up or down with the liquid level of the liquid.
In a further embodiment, a plurality of liquid cavities are disposed and connected in series, that is, the drainage channel of the preceding liquid cavity is in communication with only the connection channel of the following liquid cavity.
Further, a plurality of liquid cavities are disposed and connected in parallel, that is, the connection channels of all the liquid cavities communicate, and are in communication with the air extracting cavity, and the drainage channels of all the liquid cavities communicate for draining the liquid.
Compared with the prior art, the air extractor of the present disclosure has the following technical advantages:
The air extractor of the present disclosure uses the negative pressure generated by the flowing of the rotating liquid to extract the air. In this manner, the negative pressure can be easily increased by selecting a rotating fluid that is relatively denser, and the air extraction efficiency is high. Moreover, the negative pressure generated by the device of the present disclosure can effectively avoid the problems of other air pumps such as negative pressure fluctuations caused by vibration, and can generate stable negative pressure. In addition, according to the air extractor, requirements on the motor and other equipment and requirements on machining accuracy can be greatly reduced, and the costs can be greatly reduced.
In the drawings: 1. liquid cavity; 2. air extracting cavity; 3. motor; 4. blade; 5. air extracting channel; 6. drainage channel; 7. connection channel; 8. object to be subjected to air extraction; 9. environment channel; 10. first switching mechanism; 11. second switching mechanism; 12. third switching mechanism; 13. fourth switching mechanism; 14. air bubble collection cavity; 15. air bubble channel; 16. air-liquid blocker; 17. exhaust channel; 18. rotating air cavity; 19. liquid level; 20. air bubble; 21. air release channel; and 22. air release mechanism.
To make the technical problems, technical solutions and beneficial effects to be resolved by the present disclosure more clear, the present disclosure is further described in detail below in combination with accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not used to limit the present disclosure.
Embodiment 1The rotating liquid in the liquid cavity 1 generates a centrifugal inertia force. Since the density of the liquid is much higher than that of the air, the centrifugal inertia force of the rotating liquid is much greater than that of rotating air in
An example in which the object to be subjected to air extraction is an air tank is used for description. As shown in
A comparison between the air extractor of the present disclosure and the centrifugal evacuating pump as shown in
Moreover, in addition to the centrifugal air extracting pump, there may be a piston-type air extracting pump and a screw-type air extracting pump. The piston-type air extracting pump forms extremely high negative pressure through the reciprocating motion of a piston. However, because the piston-type air extracting pump uses the motor and a crank slider mechanism, which is an asymmetric mechanical structure, to drive the reciprocating motion of the piston, the asymmetric mechanical structure has the disadvantage of extremely severe vibration, and the negative pressure may fluctuate due to the vibration. A screw-type air extracting pump extracts air and forms negative pressure through engagement of two screws. Screw engagement requires extremely high machining precision, which leads to high costs and heavy weight of the screw type air extracting pump. Blade motion of the present disclosure is axially symmetric and has no vibration problem, so the negative pressure is stable; and the blades driving the liquid to rotate do not require extremely high machining precision, so the costs of the centrifugal air extracting pump are extremely low.
In Embodiment 1, if the air is continuously extracted from the object to be subjected to air extraction 8, the liquid level 19 of the air extracting cavity 2 is decreased until there is no liquid in the air extracting cavity. If air extraction is further performed, the air enters the liquid cavity 1 and extrudes the liquid out of the liquid cavity. As a result, there is no rotary flowing of the liquid in the liquid cavity, so that the negative pressure is severely weakened.
Embodiment 2To resolve this problem, an air extracting cavity of the present disclosure may include two or more air extracting sub-cavities. Accordingly, corresponding to the air extracting sub-cavities, a drainage channel includes two or more drainage sub-channels, an air extracting channel includes two or more air extracting sub-channels, and a connection channel includes two or more connection sub-channels. The air extracting sub-cavity is in communication with the liquid cavity through the drainage sub-channel. The air extracting sub-cavity is further in communication with the liquid cavity through the connection sub-channel. The air extracting sub-cavity is in communication with an object to be subjected to air extraction through the air extracting sub-channel. In addition, an environment sub-channel is further disposed on the air extracting sub-cavity, and the air extracting sub-cavity is in communication with an external environment through the environment sub-channel. The air extractor further includes a switching mechanism for controlling opening and closing of the channel.
As shown in
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- (1) Open the first switching mechanism 10A, the third switching mechanism 12A, the second switching mechanism 11B and the fourth switching mechanism 13B.
- (2) Start the motor, to enable the blades to rotate and form a rotational liquid flow in the liquid cavity. Liquid in the air extracting sub-cavity 2A is extracted into the liquid cavity 1 through the connection sub-channel 7A, and flows into the air extracting sub-cavity 2B through the drainage sub-channel 6B. Meanwhile, air in the air extracting sub-cavity 2B flows into an external environment through the environment sub-channel 9B, and the pressure of the air extracting sub-cavity 2B is basically the same as that of the external environment. Air in the object to be subjected to air extraction 8 is extracted into the air extracting sub-cavity 2A through the air extracting sub-channel 5A.
- (3) Before the liquid level of the air extracting sub-cavity 2A decreases to a bottom communication position of the connection sub-channel 7A, close the first switching mechanism 10A, the third switching mechanism 12A, the second switching mechanism 11B, and the fourth switching mechanism 13B, and open the second switching mechanism 11A, the fourth switching mechanism 13A, the first switching mechanism 10B, and the third switching mechanism 12B. Liquid in the air extracting sub-cavity 2B is extracted into the liquid cavity 1 through the connection sub-channel 7B, and flows into the air extracting sub-cavity 2A through the drainage sub-channel 6B. Meanwhile, air in the air extracting sub-cavity 2A flows into an external environment through the environment sub-channel 9A, and the pressure of the air extracting sub-cavity 2A is basically the same as that of the external environment. The air in the object to be subjected to air extraction 8 is extracted into the air extracting sub-cavity 2B through the air extracting sub-channel 5B.
- (4) Before the liquid level of the air extracting sub-cavity 2B decreases to a bottom communication position of the connection sub-channel 7B, open the first switching mechanism 10A, the third switching mechanism 12A, the second switching mechanism 11B and the fourth switching mechanism 13B, and close the second switching mechanism 11A, the fourth switching mechanism 13A, the first switching mechanism 10B and the third switching mechanism 12B. The liquid in the air extracting sub-cavity 2A is extracted into the liquid cavity 1 through the connection sub-channel 7A, and flows into the air extracting sub-cavity 2B through the drainage sub-channel 6B. Meanwhile, air in the air extracting sub-cavity 2B flows into an external environment through the environment sub-channel 9B, and the pressure of the air extracting sub-cavity 2B is basically the same as that of the external environment. Air in the object to be subjected to air extraction 8 is extracted into the air extracting sub-cavity 2A through the air extracting sub-channel 5A. Repeat the foregoing (3), thereby achieving continuous extraction of the air in the object to be subjected to air extraction.
In the process of Embodiment 2, all the switching mechanisms are switched at the same time, resulting in a sudden change in pressure in communication with the object to be subjected to air extraction. For example, in step (3) of Embodiment 2, when the third switching mechanism 12A is opened, and the third switching mechanism 12B is closed, the pressure in communication with the object to be subjected to air extraction 8 is suddenly changed from the negative pressure to the environment pressure. The sudden change in pressure is a sign of instability. To suppress the sudden change in pressure, this embodiment optimizes an action sequence of the switching mechanisms as follows:
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- (1) Open the first switching mechanism 10A, the third switching mechanism 12A, the second switching mechanism 11B and the fourth switching mechanism 13B.
- (2) Start the motor, to enable the blades to rotate and form a rotational liquid flow in the liquid cavity 1. The liquid in the air extracting sub-cavity 2A is extracted into the liquid cavity through the connection sub-channel 7A, and flows into the air extracting sub-cavity 2B through the drainage sub-channel 6B. Meanwhile, air in the air extracting sub-cavity 2B flows into the external environment through the environment sub-channel 9B, and the pressure of the air extracting sub-cavity 2B is basically the same as that of the external environment. Air in the object to be subjected to air extraction 8 is extracted into the air extracting sub-cavity 2A through the air extracting sub-channel 5A.
- (3) Before the liquid level of the air extracting sub-cavity 2A decreases to a communication position of the connection sub-channel 7A close to the bottom, first, close the first switching mechanism 10A, the second switching mechanism 11B, and the fourth switching mechanism 13B. Then, open the third switching mechanism 12B. Therefore, the air extracting sub-cavity 2A is in communication with the air extracting sub-cavity 2B, and negative pressure is formed in the air extracting sub-cavity 2B. Then, close the third switching mechanism 12A. Then, open the second switching mechanism 11A and the fourth switching mechanism 13A. Therefore, the air extracting sub-cavity 2A is in communication with the external environment. Finally, open the first switching mechanism 10B.
- (4) Before the liquid level of the air extracting sub-cavity 2B decreases to a bottom communication position of the connection sub-channel 7B, first, close the first switching mechanism 10B, the second switching mechanism 11A, and the fourth switching mechanism 13A. Then, open the third switching mechanism 12A. Therefore, the air extracting sub-cavity 2A is in communication with the air extracting sub-cavity 2B, and negative pressure is formed in the air extracting sub-cavity 2A. Then, close the third switching mechanism 12B. Then, open the second switching mechanism 11B and the fourth switching mechanism 13B. Therefore, the air extracting sub-cavity 2B is in communication with the external environment. Finally, open the first switching mechanism 10A. Repeat the foregoing (3), thereby achieving continuous extraction of the air in the object to be subjected to air extraction.
In the foregoing process, when the two air extracting sub-cavities are switched, although the pressure in communication with the object to be subjected to air extraction changes to a certain extent, the phenomenon of the sudden change from the negative pressure to the environmental pressure is avoided, which improves the stability of the air extractor of the present disclosure. In addition, other switching mechanisms may be disposed in the device of the present disclosure, to further avoid the sudden change of the negative pressure, for example, in Embodiment 3, after the air extracting sub-channel 5A corresponding to the air extracting sub-cavity 2A is connected to the air extracting sub-cavity 5B corresponding to the air extracting sub-cavity 2B, the sub-channels are connected to the object to be subjected to air extraction through a main air extracting channel, and a main switching mechanism is disposed on the main air extracting channel. When the air extracting sub-cavity needs to be switched, the main switching mechanism is first closed, and then the main switching mechanism is opened after the air extracting sub-cavities 2A and 2B communicate and the pressures of the two are balanced.
Embodiment 4Usually, there is air dissolved in liquid. Under negative pressure, the air dissolved in the liquid is separated out to form small air bubbles. In the present disclosure, negative pressure is formed in a liquid cavity, so that air bubbles are separated from liquid in the liquid cavity. Further, because the density of the air bubbles is less than that of the liquid, the air bubbles gather at a flowing center of rotating liquid, to form an air mass. The air mass occupies the space of the liquid, so that rotary flowing of the liquid cannot be formed at the central region of the liquid cavity, which weakens the negative pressure, and then weakens the air extraction effect of the present disclosure. To remove the air mass at the center, an air bubble collection cavity 14 as shown in
There is liquid in the air bubble collection cavity 14. When the air bubbles gather at the rotational flow center, the air bubbles move upward under the action of buoyancy, enter the air bubble collection cavity through the air bubble channel 15, and finally gather in the upper space of the air bubble collection cavity 14. Therefore, no air mass is formed in the liquid cavity.
In this embodiment, the buoyancy of the air bubbles is utilized to separate the separated air from rotary liquid flowing, avoiding gathering of the air mass in the rotary flowing center of the liquid. Further, in this embodiment, a communication position of a connection channel 7 and the liquid cavity 1 is disposed at the lower part of the liquid cavity 1, as shown in
An air release channel 21 and an air release mechanism 22 are also disposed on the air bubble collection cavity 14 in
In this embodiment, the liquid in the air extracting cavity 2 is always in contact with the air, so that the air is continuously dissolved into the liquid, the newly dissolved air may be continuously separated out under the condition of a negative pressure of the liquid cavity 1. This may lead to a continuous increase of the air in the liquid cavity 1. In Embodiments 1-3, the air mass gathering at the center of the liquid cavity 1 becomes larger and larger. In Embodiment 4, the volume of the air in the air bubble collection cavity 14 is continuously increased, and finally the air fills the air bubble collection cavity 14 and then overflows into the liquid cavity 1, which is not beneficial to further increase of the negative pressure. Therefore, the present disclosure further needs to resolve the problem of continuous air separation.
The solution of the present disclosure is to reduce contact between the liquid and the air, thereby reducing the amount of air dissolved into the liquid. Using the air extracting cavity in Embodiment 3 as an example, a specific method is shown in
In this embodiment, two liquid cavities are connected in series to enhance the negative pressure for air extraction. As shown in
The foregoing description is only one embodiment of the present disclosure. Based on this idea, the negative pressure for air extraction may be further increased by increasing the number of liquid cavities connected in series in other embodiments of the present disclosure.
Embodiment 7In this embodiment, two liquid cavities are connected in parallel to enhance an air extraction amount. As shown in
The foregoing description is only one embodiment of the present disclosure. Based on this idea, the negative pressure for air extraction may be further increased by increasing the number of liquid cavities connected in parallel in other embodiments of the present disclosure.
The foregoing descriptions are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, and the like made within the spirit and principles of the present disclosure shall fall into the protection scope of the present disclosure.
Claims
1. An air extractor, comprising:
- a liquid cavity,
- an air extracting cavity,
- a connection channel,
- a drainage channel, and
- an air extracting channel,
- wherein the liquid cavity contains rotating liquid, the air extracting cavity has liquid therein, the liquid in the air extracting cavity is in communication with the liquid cavity through the connection channel, the liquid cavity drains the liquid through the drainage channel, a communication position of the connection channel and the liquid cavity is closer to the center of the rotating liquid in the liquid cavity than a communication position of the drainage channel and the liquid cavity, the air extracting cavity is in communication with an object to be subjected to air extraction through the air extracting channel, and air in the object to be subjected to air extraction flows through the air extracting channel into the air extracting cavity.
2. The air extractor according to claim 1, wherein the air extracting cavity comprises two or more air extracting sub-cavities corresponding to the air extracting sub-cavities, the drainage channel comprises two or more drainage sub-channels, the air extracting channel comprises two or more air extracting sub-channels, and the connection channel comprises two or more connection sub-channels; the air extracting cavity is in communication with the liquid cavity through the drainage sub-channel; the air extracting sub-cavity is in communication with the liquid cavity through the connection sub-channel; the air extracting sub-cavity is in communication with the object to be subjected to air extraction through the air extracting sub-channel; in addition, an environment channel is further disposed on the air extracting sub-cavities, the environment channel comprises two or more environment sub-channels, and the air extracting sub-cavity is in communication with the external environment through the environment sub-channel; and the air extractor further comprises switching mechanisms for controlling opening and closing of the channels.
3. The air extractor according to claim 2, wherein a first switching mechanism is disposed on the connection sub-channel, a second switching mechanism is disposed on the drainage sub-channel, a third switching mechanism is disposed on the air extracting sub-channel, and a fourth switching mechanism is disposed on the environment sub-channel.
4. The air extractor according to claim 3, wherein continuous air extraction of the device is achieved through the following switching actions:
- (1) denoting one or more of the air extracting sub-cavities as an air extracting sub-cavity A, opening the corresponding first switching mechanism and third switching mechanism, and meanwhile, closing the corresponding second switching mechanism and fourth switching mechanism, performing operation on one or more of the remaining air extracting sub-cavities and denoting the same as an air extracting sub-cavity B, opening the corresponding second switching mechanism and fourth switching mechanism, and meanwhile, closing the corresponding first switching mechanism and third switching mechanism;
- (2) starting the device, to form a rotational liquid flow in the liquid cavity, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity A through the air extracting sub-channel corresponding to the air extracting sub-cavity A, and causing the liquid to enter the air extracting sub-cavity B through the drainage sub-channel corresponding to the air extracting sub-cavity B;
- (3) before the liquid level of the liquid in the air extracting sub-cavity A is reduced to a communication position between the connection sub-channel and the air extracting sub-cavity A, closing the first switching mechanism and the third switching mechanism corresponding to the air extracting sub-cavity A and the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity B, and opening the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity A and the first switching mechanism and the third switching mechanism corresponding to the air extracting sub-cavity B, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity B through the air extracting sub-channel corresponding to the air extracting sub-cavity B, and causing the liquid to enter the air extracting sub-cavity A through the drainage sub-channel corresponding to the air extracting sub-cavity A;
- repeating steps (1) to (3) to control opening and closing of the switching mechanisms on the air extracting sub-cavity A and the air extracting sub-cavity B, thereby achieving continuous extraction of the air in the object to be subjected to air extraction.
5. The air extractor according to claim 3, wherein continuous air extraction of the device is achieved through the following switching actions:
- (1) denoting one or more of the air extracting sub-cavities as an air extracting sub-cavity A, opening the corresponding first switching mechanism and third switching mechanism, and meanwhile, closing the corresponding second switching mechanism and fourth switching mechanism, performing operation on one or more of the remaining air extracting sub-cavities and denoting the same as an air extracting sub-cavity B, opening the corresponding second switching mechanism and fourth switching mechanism, and meanwhile, closing the first switching mechanism and the third switching mechanism;
- (2) starting the device, to form a rotational liquid flow in the liquid cavity, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity A through the air extracting sub-channel corresponding to the air extracting sub-cavity A, and causing the liquid to enter the air extracting sub-cavity B through the drainage sub-channel corresponding to the air extracting sub-cavity B;
- (3) before the liquid level of the liquid in the air extracting sub-cavity A is reduced to a communication position between the connection sub-channel and the air extracting sub-cavity A, closing the first switching mechanism corresponding to the air extracting sub-cavity A and the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity B; and opening the third switching mechanism corresponding to the air extracting sub-cavity B to enable the air extracting sub-cavity A to be in communication with the air extracting sub-cavity B, then closing the third switching mechanism corresponding to the air extracting sub-cavity A, and opening the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity A and the first switching mechanism corresponding to the air extracting sub-cavity B, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity B through the air extracting sub-channel corresponding to the air extracting sub-cavity B, and causing the liquid to enter the air extracting sub-cavity A through the drainage sub-channel corresponding to the air extracting sub-cavity A;
- (4) before the liquid level of the liquid in the air extracting sub-cavity B is reduced to a communication position between the connection sub-channel and the air extracting sub-cavity B, closing the first switching mechanism corresponding to the air extracting sub-cavity B and the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity A; and opening the third switching mechanism corresponding to the air extracting sub-cavity A to enable the air extracting sub-cavity A to be in communication with the air extracting sub-cavity B, then closing the third switching mechanism corresponding to the air extracting sub-cavity B, and opening the second switching mechanism and the fourth switching mechanism corresponding to the air extracting sub-cavity B and the first switching mechanism corresponding to the air extracting sub-cavity A, thereby extracting the air in the object to be subjected to air extraction into the air extracting sub-cavity A through the air extracting sub-channel corresponding to the air extracting sub-cavity A, and causing the liquid to enter the air extracting sub-cavity B through the drainage sub-channel corresponding to the air extracting sub-cavity B;
- repeating steps (3) and (4) to achieve continuous extraction of the air in the object to be subjected to air extraction.
6. The air extractor according to claim 1, wherein an air bubble channel and an air bubble collection cavity are disposed on the liquid cavity, the air bubble collection cavity is in communication with the liquid in the liquid cavity through the air bubble channel, and air bubbles in the liquid cavity enters the air bubble collection cavity through the air bubble channel under the effect of buoyancy.
7. The air extractor according to claim 6, wherein the device comprises an air release channel and an air release mechanism, and the air release mechanism is in communication with the air bubble collection cavity through the air release channel, to discharge the air in the air collection cavity.
8. The air extractor according to claim 1, wherein an air-liquid blocker is disposed in the air extracting cavity, the air-liquid blocker configured to reduce contact between the air and the liquid, and the air-liquid blocker can move up or down with the liquid level of the liquid.
9. The air extractor according to claim 1, wherein a plurality of liquid cavities are disposed and connected in series, the drainage channel of a preceding liquid cavity is in communication with the connection channel of a following liquid cavity.
10. The air extractor according to claim 1, wherein a plurality of liquid cavities are disposed and connected in parallel, the connection channels of all the liquid cavities communicate and are in communication with the air extracting cavity, and the drainage channels of all the liquid cavities communicate for draining the liquid.
Type: Application
Filed: May 19, 2023
Publication Date: Nov 23, 2023
Inventors: Xin LI (Hangzhou), Dongting XIAN (Hangzhou)
Application Number: 18/320,657