Resonance type liquid pumping device and power system
The resonance type pumping device uses the vibration of the quartz chip to realize the liquid introduction and discharge, which solves the problem of large energy loss in the existing pump structure and improves the energy and volume efficiency.
Patent Information
- Application Number
- CN202423063348.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-11
AI Technical Summary
The existing pump structure requires a motor to provide kinetic energy, resulting in large energy loss and low volumetric efficiency.
A resonant liquid pumping device is used, which utilizes the vibration of the quartz chip to generate a vibration component, and realizes the introduction and export of liquid through the change of cavity volume, directly converting electrical energy into liquid volume deformation, eliminating the intermediate motor kinetic energy conversion process.
The energy conversion efficiency is improved, and the volumetric efficiency is close to 100%, which is significantly improved compared with the 70%-80% volumetric efficiency of traditional mechanical pumps.
Smart Images
Figure CN223374593U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pump bodies, in particular to a resonance type liquid pumping device and a power system. Background Art
[0002] Pump structures currently used in various industries are generally divided into vane pumps and positive displacement pumps. The basic structure of each type of pump usually includes the pump body, impeller, shaft, sealing ring, bearing components, etc. For example, the structure of a centrifugal pump consists of flow-through components such as the impeller, suction chamber and discharge chamber, as well as auxiliary working mechanisms such as seals, axial force balance, rotor support and transmission. The positive displacement pump structure uses the periodic change in the volume of the working chamber filled with liquid to operate. Although the structure varies, it generally includes components for generating volume changes (such as pistons, plungers, gears, etc.) and corresponding sealing and transmission mechanisms.
[0003] All existing pumps need to be equipped with motors to provide kinetic energy to the system in order to achieve the pumping function, that is, electromagnetic conversion is required to convert it into mechanical energy. However, there is a large energy loss in converting electrical energy to mechanical energy, and existing pumps all have the problem of low volumetric efficiency. Utility Model Content
[0004] Based on this, a resonant pumping device and a power system are provided to solve the problem in the prior art of converting electrical energy into mechanical energy, resulting in large energy loss and low volumetric efficiency.
[0005] In one aspect, the present invention provides a resonant liquid pumping device, wherein a closed cavity structure for containing liquid is formed inside the device, and the device comprises:
[0006] Cavity body,
[0007] A liquid inlet is provided on the cavity body and is used to introduce liquid into the cavity body;
[0008] a first one-way conducting member fixed in the liquid inlet so that only liquid can be introduced into the liquid inlet;
[0009] A liquid outlet is provided on the cavity body and is used to guide the liquid out of the cavity body;
[0010] a second one-way conducting member fixed in the liquid outlet so that only liquid can be discharged from the liquid outlet;
[0011] A connecting hole is provided on the cavity body;
[0012] The vibration component covers the connection hole, and the vibration component conducts electricity through the internal quartz structure and causes the vibration component to vibrate, so that the volume of the cavity body changes and the liquid is introduced or exported.
[0013] On the basis of the above technical solution, the present invention can also be improved as follows.
[0014] In one implementation, the vibration component includes:
[0015] A vibration control member, the vibration control member is used to apply voltage;
[0016] A crystal oscillator, which is a quartz structure and is used to be electrically connected to the vibration control component;
[0017] The sheet pump body covers the connection hole, the crystal oscillator is fixed on the sheet pump body, the sheet pump body vibrates under the drive of the crystal oscillator, and the liquid is introduced or exported through the vibration driving device of the sheet pump body.
[0018] In one implementation, the sheet-like pump body is a deformable thin sheet structure, and the sheet-like pump body drives the volume of the cavity body to decrease or increase by performing an inward concave deformation or an outward convex deformation.
[0019] In one implementation, the crystal oscillator is fixed in the middle of the sheet-shaped pump body.
[0020] In one implementation manner, two wires extend from the vibration control component and are respectively connected to two electrodes of the crystal oscillator through the two wires.
[0021] In one implementation, the cavity body includes:
[0022] An upper shell is located at the top and is provided with a liquid outlet;
[0023] The lower shell is located at the bottom and is provided with a liquid inlet;
[0024] The upper shell and the lower shell are connected in a vertical direction and form a cavity body.
[0025] In one implementation, the liquid outlet is located above one side of the cavity body, and the liquid inlet is located below the other side of the cavity body.
[0026] In one implementation, the apparatus further includes:
[0027] The liquid inlet channel is connected to the liquid inlet and extends downward, and is used to extend below the liquid surface.
[0028] In one implementation manner, the first one-way conducting member and the second one-way conducting member are both one-way valves.
[0029] On the other hand, the present invention also provides a power system, including a resonant pumping device, and further comprising:
[0030] An oil passage, the oil passage is connected to the liquid outlet;
[0031] Oil sump, the oil sump is connected to the liquid inlet.
[0032] The beneficial effects of the present invention are as follows: a quartz structure is provided in the vibration component and can be energized. When energized, the quartz crystal will vibrate, thereby driving the vibration component to vibrate; since the vibration component covers the position of the connection hole and serves as a part of the closed cavity of the device, when the vibration component vibrates, the volume of the closed cavity will change, resulting in a change in the pressure in the closed cavity, which will enable the device to introduce or export liquid, thereby transferring the liquid; specifically, when the vibration of the vibration component causes the volume of the cavity body to increase, the liquid at the liquid inlet is subjected to negative pressure and is sucked into the cavity body, and when the vibration component continues to vibrate, the liquid at the liquid inlet is subjected to negative pressure and is sucked into the cavity body. When the volume of the cavity body decreases or returns to its original volume, the liquid in the cavity body will be squeezed and discharged from the liquid outlet. Therefore, the continuous or intermittent vibration of the vibration component is used to control the amount and efficiency of the liquid introduced and discharged. Since the present application adopts a crystal oscillator to convert power, the vibration component is vibrated by the crystal oscillator principle, and the vibration amount is completely converted into the displacement of the liquid transferred by the device, with high volumetric efficiency. In contrast, the electrical energy converted into mechanical energy by the pump body in the prior art has a large energy loss and low volumetric efficiency. Therefore, the present application has a higher energy conversion efficiency and a higher volumetric rate than the pump body in the prior art. In summary, the present application utilizes the piezoelectric effect of quartz and the volume change caused by the deformation of the vibration component to achieve liquid pumping, directly converting electrical energy into liquid volume deformation. Compared with the transmission pump, the present invention saves the intermediate process of converting it into motor kinetic energy and then outputting it, and has high conversion efficiency. In addition, the deformation of the vibration component is used to directly output the volume change, and the efficiency of the entire system is nearly 100%, which is significantly improved compared with the 70% to 80% volumetric efficiency of the traditional mechanical pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 A schematic structural diagram of a resonant pumping device in one embodiment;
[0034] Figure 2 Schematic diagram of different deformation amounts of the sheet-like pump body in another embodiment.
[0035] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0036] 11. Upper shell; 12. Lower shell;
[0037] 20, liquid inlet; 30, first one-way conducting member; 40, liquid outlet; 50, second one-way conducting member; 60, liquid inlet channel;
[0038] 71. Vibration control component; 72. Crystal oscillator component; 73. Sheet pump body. DETAILED DESCRIPTION
[0039] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that the illustrations provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner, so the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. During actual implementation, the form, quantity and proportion of each component can be changed at will, and the component layout form may also be more complicated.
[0040] A resonant pumping device, see Figure 1 A closed cavity structure for accommodating liquid is formed in the device, and the device includes a cavity body, a liquid inlet 20, a first one-way conductive member 30, a liquid outlet 40, a second one-way conductive member 50, a connecting hole and a vibration component. The liquid inlet 20 is opened on the cavity body and is used to introduce liquid into the cavity body; the first one-way conductive member 30 is fixed in the liquid inlet 20, so that only liquid can be introduced at the liquid inlet 20; the liquid outlet 40 is opened on the cavity body and is used to guide the liquid out of the cavity body; the second one-way conductive member 50 is fixed in the liquid outlet 40, so that only liquid can be guided out at the liquid outlet 40; the connecting hole is opened on the cavity body; the vibration component covers the connecting hole, and the vibration component conducts electricity through the internal quartz structure and causes the vibration component to vibrate, so that the volume of the cavity body changes and the liquid is introduced or discharged.
[0041] With the above solution, a quartz structure is provided in the vibration component and can be energized. When energized, the quartz chip will vibrate, thereby driving the vibration component to vibrate. Since the vibration component covers the position of the connection hole and serves as a part of the closed cavity of the device, when the vibration component vibrates, the volume of the closed cavity will change, resulting in a change in the pressure in the closed cavity, which will cause the device to import or export liquid, thereby transferring the liquid. Specifically, when the vibration of the vibration component causes the volume of the cavity body to increase, the liquid at the liquid inlet 20 is subjected to negative pressure and is sucked into the cavity body. When the vibration component continues to vibrate and guide When the volume of the cavity body is reduced or restored to its original volume, the liquid in the cavity body will be squeezed and discharged from the liquid outlet 40. Therefore, the amount of liquid introduced and discharged and the efficiency are controlled by the continuous or intermittent vibration of the vibration component. Since the present application adopts a crystal oscillator to convert power, the vibration component is vibrated by the crystal oscillator principle, and the vibration amount is completely converted into the displacement of the liquid transferred by the device, with high volumetric efficiency. In contrast, the electrical energy converted into mechanical energy by the pump body in the prior art has a large energy loss and low volumetric efficiency. Therefore, the present application has a higher energy conversion efficiency and a higher volumetric rate than the pump body in the prior art. In summary, the present application utilizes the piezoelectric effect of quartz and the volume change caused by the deformation of the vibration component to achieve liquid pumping, directly converting electrical energy into liquid volume deformation. Compared with the transmission pump, the present invention saves the intermediate process of converting it into motor kinetic energy and then outputting it, and has high conversion efficiency. In addition, the deformation of the vibration component is used to directly output the volume change, and the efficiency of the entire system is nearly 100%, which is significantly improved compared to the 70% to 80% volumetric efficiency of the traditional mechanical pump.
[0042] In some embodiments of this application, see Figure 1 The vibration assembly includes a vibration control element 71, a crystal oscillator 72, and a sheet pump body 73. The vibration control element 71 is used to apply voltage; the crystal oscillator 72 is a quartz structure and is electrically connected to the vibration control element 71; the sheet pump body 73 covers the connection hole, and the crystal oscillator 72 is fixed to the sheet pump body 73. The sheet pump body 73 vibrates under the drive of the crystal oscillator 72, and the liquid is introduced or discharged through the vibration drive device of the sheet pump body 73. Thus, when the vibration assembly is in operation, the vibration control element 71 applies voltage to the crystal oscillator 72, causing the crystal oscillator 72 to vibrate. Since the crystal oscillator 72 is connected to the sheet pump body 73, the crystal oscillator 72 will drive the sheet pump body 73 to vibrate together, thereby causing the volume of the cavity body to change, so that the cavity body can introduce liquid from the liquid inlet 20 or discharge liquid from the liquid outlet 40.
[0043] In some embodiments of this application, see Figure 1The sheet pump body 73 is a deformable thin sheet structure. The sheet pump body 73 drives the volume of the cavity body to decrease or increase by deforming inward or outward. In this way, the sheet pump body 73 has a thin sheet structure, which facilitates the sheet pump body 73 to vibrate synchronously with the vibration of the crystal oscillator 72. When operating and selecting the deformation direction of the sheet pump body 73, the sheet pump body 73 can only deform inward or outward. If the sheet pump body 73 can deform inward and outward at the same time within a movement cycle, it is easy to cause the sheet pump body 73 to deform in two directions at the same time. For example, a part of the sheet pump body 73 is both concave and convex at the same time. This deformation makes the deformation of the sheet pump body 73 uncontrollable, resulting in the inability to confirm whether the volume of the cavity body is decreasing or increasing, which is not conducive to adjusting the pumping of the device.
[0044] Specifically, the sheet pump body 73 can only be deformed inwardly or outwardly. It can be understood that when the sheet pump body 73 can only be deformed inwardly, the sheet pump body 73 will be concave relative to the cavity body to reduce the volume of the cavity body, thereby squeezing the liquid out of the liquid outlet 40. When the sheet pump body 73 finishes deforming and returns to its original shape, the volume of the cavity body will increase relatively and suck liquid from the liquid inlet 20. The deformation and recovery of the sheet pump body 73 completes a cycle of oil discharge and oil absorption of the sheet pump body 73, thereby achieving the effect of pumping liquid.
[0045] When the sheet-like pump body 73 can only be deformed outwardly, the sheet-like pump body 73 will bulge outward relative to the cavity body to increase the volume of the cavity body, thereby sucking in the liquid from the liquid inlet 20. When the sheet-like pump body 73 finishes deformation and returns to its original shape, the volume of the cavity body will be relatively reduced and the liquid will be pumped out from the liquid outlet 40. The deformation and recovery of the sheet-like pump body 73 completes a cycle of oil suction and oil discharge of the sheet-like pump body 73, thereby achieving the effect of pumping liquid.
[0046] In a specific embodiment, when the crystal oscillator 72 is applied with voltage by the vibration control component 71, the vibration component is concave toward the cavity body, so that the volume of the cavity body is reduced, thereby pumping out the liquid. When the vibration control component 71 stops applying voltage, the vibration component rebounds and the corresponding device absorbs oil. Correspondingly, a specific embodiment can be described as: adjusting the frequency of the alternating voltage applied by the vibration control component 71 so that the frequency of the crystal oscillator 72 reaches the resonant frequency of the sheet pump body 73, and the sheet pump body 73 is deformed. The deformed sheet pump body 73 squeezes the enclosed space in the cavity body formed by the upper shell 11 and the lower shell 12, thereby pressing the internal liquid out from the liquid outlet 40 to achieve liquid pumping; when the sheet pump body 73 completes the deformation, the vibration control component 71 stops outputting the voltage signal, and the sheet pump body 73 returns to its original shape, so that the enclosed space in the cavity body formed by the upper shell 11 and the lower shell 12 is subjected to negative pressure, thereby sucking in the liquid from the liquid inlet 20 to complete a cycle of oil discharge and oil absorption to achieve a liquid pumping effect.
[0047] Therefore, the number of times the liquid is pumped can be adjusted by controlling the interval between when the vibration control member 71 is loaded with voltage and when the voltage is not loaded, thereby controlling the amount of liquid pumped.
[0048] In some embodiments of this application, see Figure 1 , the crystal oscillator 72 is fixed in the middle of the sheet pump body 73. In this way, the crystal oscillator 72 is fixed in the middle of the sheet pump body 73, so that the sheet pump body 73 can vibrate evenly when the crystal oscillator 72 drives the sheet pump body 73 to vibrate.
[0049] In a specific embodiment, the frequency of the crystal oscillator 72 can be adjusted by the vibration control component 71 so that the frequency of the crystal oscillator 72 reaches the resonant frequency of the sheet pump body 73, thereby increasing the vibration frequency of the entire vibration control component 71, thereby facilitating the improvement of energy conversion efficiency.
[0050] In a specific embodiment, the sheet-shaped pump body 73 may be made of spring steel.
[0051] In some embodiments of this application, see Figure 1 Two wires extend from the vibration control element 71 and are connected to the two electrodes of the crystal oscillator 72 through the two wires. In this way, when an electric field is applied to both electrodes of the quartz crystal, the quartz crystal will deform. Therefore, it is necessary to connect both electrodes of the crystal oscillator 72 to the vibration control element 71.
[0052] In a specific embodiment, the vibration control element 71 not only applies an alternating voltage to the crystal oscillator 72, but the vibration control element 71 can also adjust the frequency of the applied alternating voltage, thereby changing the vibration amplitude of the crystal oscillator 72, so as to change the deformation of the sheet pump body 73. When operating at a better energy conversion efficiency, it operates at the resonant frequency of the crystal oscillator 72 and the sheet pump body 73. However, in conventional use, the mode of the sheet pump body 73 can also be divided into first order, second order, and third order, and each order corresponds to a different deformation of the sheet pump body 73, that is, by adjusting the vibration control element 71, the order of the sheet pump body 73 can be adjusted accordingly, thereby correspondingly adjusting the amount of liquid pumped in a single time. If the amount of liquid pumped per unit time needs to be adjusted, the number of loading times of the vibration control element 71 per unit time can be adjusted. Figure 2 , which is a schematic diagram of different deformation amounts of the sheet pump body 73, corresponding to a for the first order, b for the second order, and c for the third order.
[0053] When the vibration control component 71 is loaded, voltage is applied to the crystal oscillator 72, and the entire vibration component is in a liquid pumping operation state; when the vibration control component 71 is not loaded, no voltage is applied to the crystal oscillator 72, the entire vibration component is in a static state, and no liquid is pumped.
[0054] In some embodiments of this application, see Figure 1 The cavity body includes an upper shell 11 and a lower shell 12. The upper shell 11 is located at the top and has a liquid outlet 40; the lower shell 12 is located at the bottom and has a liquid inlet 20. The upper shell 11 and the lower shell 12 are connected in the vertical direction and form the cavity body. In this way, the upper shell 11 and the lower shell 12 are set up, and the upper shell 11 and the lower shell 12 are connected to form the cavity body, which makes the combination and maintenance of the cavity body more convenient. A corresponding sealing structure, such as a sealing ring or sealant, can be set at the fitting surface of the upper shell 11 and the lower shell 12 to avoid air leakage at the fitting surface of the upper shell 11 and the lower shell 12. The liquid outlet 40 is set on the upper shell 11, and the liquid inlet 20 is set on the lower shell 12, so as to facilitate the diversion of the liquid located below to the top. In the specific setting, the oil guide direction of the cavity structure is determined according to the position of the matching components, and the liquid outlet 40 can also be set on the lower shell 12.
[0055] In some embodiments of this application, see Figure 1 The liquid outlet 40 is located above one side of the cavity body, and the liquid inlet 20 is located below the other side of the cavity body. In this way, the liquid outlet 40 and the liquid inlet 20 are located at two separate ends, which increases the distance between the liquid outlet 40 and the liquid inlet 20, thereby facilitating the pumping of liquid from the bottom of one side of the cavity structure to the top of the other side. When specifically setting the positions of the liquid outlet 40 and the liquid inlet 20, the positions of the liquid outlet 40 and the liquid inlet 20 can be adjusted accordingly according to the direction to which the liquid is required to flow.
[0056] In some embodiments of this application, see Figure 1 The device further includes a liquid inlet channel 60, which is connected to the liquid inlet 20 and extends downward. The liquid inlet channel 60 is configured to extend below the liquid level. Thus, the liquid inlet channel 60 is provided to facilitate the entry of liquid into the cavity structure. The liquid inlet channel 60 can extend below the liquid level, thereby facilitating the pumping of liquid from the cavity structure.
[0057] In some embodiments of this application, see Figure 1 The first one-way conducting member 30 and the second one-way conducting member 50 are both one-way valves. Thus, in a specific configuration, the first one-way conducting member 30 and the second one-way conducting member 50 may also be other one-way conducting structures having a one-way conducting function, such as a one-way conducting circuit. The one-way valve is merely an example and does not limit the type of the first one-way conducting member 30 and the second one-way conducting member 50.
[0058] A power system includes a resonant pumping device, an oil channel, and an oil pan. The oil channel is connected to a liquid outlet 40, and the oil pan is connected to a liquid inlet 20. Thus, in one use scenario, when the resonant pumping device is used in a vehicle power system, one end of the resonant pumping device can be connected to the oil channel and the other end to the oil pan to pump out liquid. In this embodiment, the liquid is oil.
[0059] The power system is only one embodiment of the resonant pumping device of the present application and is not intended to limit the use scenarios of the resonant pumping device.
[0060] The present application utilizes the piezoelectric effect of quartz and the resonance of the vibration component to produce volume changes caused by deformation to achieve liquid pumping, and directly converts electrical energy into liquid volume deformation. Compared with the transmission pump, the present invention saves the intermediate process of converting it into motor kinetic energy and then outputting it, and has high conversion efficiency. In addition, by directly outputting volume changes through deformation, the efficiency of the entire system is nearly 100%, which is a significant improvement over the traditional mechanical pump volumetric efficiency of 70% to 80%.
[0061] This application can be installed as long as there is a confined space. It does not require motors, blades, inner and outer rotors and other components. It can be used to pump liquid in narrow spaces. It has the advantages of simple structure and easy installation. In addition, the deformation of the sheet pump body 73 can be adjusted by adjusting the vibration control component 71 to output voltages of different frequencies, thereby controlling the pump displacement and achieving a variable displacement pump effect.
[0062] In a specific embodiment, the crystal oscillator 72 is not limited to a quartz structure, and other structures that can generate a piezoelectric effect can be used as a substitute for quartz and as the crystal oscillator 72 .
[0063] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size shall still fall within the scope of the technical contents disclosed in this utility model without affecting the efficacy and objectives that can be achieved by the present utility model.
[0064] In the description of the present invention, it should be understood that the terms "longitudinal", "thickness", "up", "down", "vertical", "top", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.
[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined. Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" indicates that the specific features, structures, materials, or characteristics described in conjunction with such embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and integrate the different embodiments or examples, and features of different embodiments or examples, described in this specification, without conflict.
Claims
1. A resonant pumping device, characterized in that: A closed cavity structure for containing liquid is formed in the device, and the device comprises: Cavity body, a liquid inlet (20), the liquid inlet (20) being provided on the cavity body and used for introducing liquid into the cavity body; a first one-way conducting member (30), the first one-way conducting member (30) being fixed in the liquid inlet (20) and enabling only liquid to be introduced into the liquid inlet (20); a liquid outlet (40), the liquid outlet (40) being provided on the cavity body and used for conducting liquid out of the cavity body; a second one-way conducting member (50), the second one-way conducting member (50) being fixed in the liquid outlet (40) and enabling only liquid to be discharged from the liquid outlet (40); a connecting hole, the connecting hole being provided on the cavity body; A vibration component covers the connection hole, and the vibration component is conductive through the internal quartz structure and causes the vibration component to vibrate, so that the volume of the cavity body changes and liquid is introduced or exported.
2. The resonant pumping device according to claim 1, characterized in that: The vibration assembly comprises: a vibration control member (71), wherein the vibration control member (71) is used to apply a voltage; a crystal oscillator (72), the crystal oscillator (72) being a quartz structure and being used for being electrically connected to the vibration control component (71); A sheet-like pump body (73) covers the connecting hole, the crystal oscillator (72) is fixed on the sheet-like pump body (73), the sheet-like pump body (73) vibrates under the drive of the crystal oscillator (72), and the vibration of the sheet-like pump body (73) drives the device to introduce or export liquid.
3. The resonant pumping device according to claim 2, characterized in that: The sheet-like pump body (73) is a deformable thin sheet structure. The sheet-like pump body (73) drives the volume of the cavity body to decrease or increase by performing an inward concave deformation or an outward convex deformation.
4. The resonant pumping device according to claim 2, characterized in that: The crystal oscillator (72) is fixed in the middle of the sheet-shaped pump body (73).
5. The resonant pumping device according to claim 2, characterized in that: Two wires extend from the vibration control component (71), and are respectively connected to the two electrodes of the crystal oscillator (72) through the two wires.
6. The resonant pumping device according to claim 1, characterized in that: The cavity body comprises: an upper shell (11), the upper shell (11) being located at the top and having the liquid outlet (40) formed therein; a lower shell (12), the lower shell (12) being located at the bottom and having the liquid inlet (20); The upper shell (11) and the lower shell (12) are connected in a vertical direction and surround the cavity body.
7. The resonant pumping device according to claim 1, characterized in that: The liquid outlet (40) is arranged above one side of the cavity body, and the liquid inlet (20) is arranged below the other side of the cavity body.
8. The resonant pumping device according to claim 1, characterized in that: The device further comprises: A liquid inlet channel (60), the liquid inlet channel (60) is connected to the liquid inlet (20) and extends downward, and the liquid inlet channel (60) is used to extend below the liquid surface.
9. The resonant pumping device according to claim 1, characterized in that: The first one-way conducting member (30) and the second one-way conducting member (50) are both one-way valves.
10. A power system, characterized in that: The resonant liquid pumping device according to any one of claims 1 to 9 further comprises: an oil passage, the oil passage being connected to the liquid outlet (40); An oil pan is connected to the liquid inlet (20).