fluidic pump

Abstract

The application relates to the technical field of fluid-driven pumps, in particular to a jet pump which comprises a shell and a vibration assembly. The shell has an inner cavity, an inlet and an outlet; the vibration assembly is arranged in the inner cavity to divide the inner cavity into a first chamber and a second chamber, the inlet is communicated with the first chamber, the outlet is communicated with the second chamber, and a flow-through hole communicated with the first chamber and the second chamber is arranged on the vibration assembly; wherein at least part of the vibration assembly can be switched between a first posture and a second posture; in the process of switching at least part of the vibration assembly to the first posture, the volume of the first chamber is reduced, the volume of the second chamber is increased, and at least part of the inlet is shielded by the vibration assembly in the first posture; in the process of switching at least part of the vibration assembly to the second posture, the volume of the first chamber is increased, and the volume of the second chamber is reduced. The vibration assembly actively shields the inlet in the first posture, and the attitude change of the vibration assembly itself can reduce backflow.

Description

Technical Field

[0001] This application relates to the field of fluid-driven pump technology, and more particularly to a jet pump. Background Technology

[0002] A jet pump is a device that uses the jetting action of high-pressure fluid to transport fluid. In related technologies, jet pumps are prone to backflow. Summary of the Invention

[0003] The purpose of this application is to provide a jet pump that solves the technical problem of backflow in jet pumps.

[0004] To achieve the above objectives, the technical solution adopted in this application embodiment is: a jet pump, including a housing and a vibration component.

[0005] The housing has an inner cavity, an inlet, and an outlet. The inlet connects the inner cavity to a first external environment, and the outlet connects the inner cavity to a second external environment. A vibration assembly is disposed in the inner cavity to divide the inner cavity into a first chamber and a second chamber. The inlet connects to the first chamber, and the outlet connects to the second chamber. The vibration assembly has a flow hole connecting the first chamber and the second chamber. At least a portion of the vibration assembly can switch between a first posture and a second posture. During the switching of at least a portion of the vibration assembly to the first posture, the volume of the first chamber decreases, and the volume of the second chamber increases. In the first posture, the vibration assembly blocks at least a portion of the inlet. During the switching of at least a portion of the vibration assembly to the second posture, the volume of the first chamber increases, and the volume of the second chamber decreases.

[0006] The beneficial effects of the jet pump provided in this application embodiment are as follows: When at least a portion of the vibration component switches to the second posture, it expands the volume of the first chamber, allowing fluid to enter the first chamber through the inlet. When at least a portion of the vibration component switches back to the first posture, it reduces the volume of the first chamber, allowing fluid in the first chamber to flow into the second chamber through the flow hole. Furthermore, the vibration component actively blocks at least a portion of the inlet, reducing the possibility of fluid in the first chamber flowing to the outside environment through the inlet, thus reducing backflow. When at least a portion of the vibration component switches back to the second posture, it expands the volume of the first chamber, allowing fluid to enter the first chamber through the inlet; simultaneously, it reduces the volume of the second chamber, allowing fluid in the second chamber to flow to the outside environment through the outlet. The reciprocating switching of at least a portion of the vibration component between the first and second postures enables fluid transport. Utilizing the posture changes of the vibration component itself to achieve a valve-like shut-off and open function reduces backflow.

[0007] In some embodiments, the vibration assembly includes: A vibration diaphragm is disposed in the inner cavity and divides the inner cavity into a first chamber and a second chamber. The outer periphery of the vibration diaphragm is located between the inlet and the outlet. The flow hole is formed on the vibration diaphragm. A driving component, connected to the vibrating diaphragm, is used to drive the vibrating diaphragm to reciprocate and switch between the first posture and the second posture. In the first posture, the vibration diaphragm protrudes and deforms towards the inlet to fit against the end face around the inlet.

[0008] In some embodiments, the vibration diaphragm includes: The first deformable part is connected to the driving component; The second deformation part is arranged around the periphery of the first deformation part, and the inner periphery of the second deformation part is connected to the outer periphery of the first deformation part. The elastic modulus of the second deformed part is less than that of the first deformed part.

[0009] In some embodiments, when the vibrating diaphragm is in a static equilibrium state, the second deformable portion is compressed between the inner wall of the inner cavity and the first deformable portion.

[0010] In some embodiments, the second deformable portion has a stretchable corrugated structure, wherein the crests and troughs of the corrugated structure are alternately arranged radially along the second deformable portion.

[0011] In some embodiments, the vibration assembly further includes a frequency tuning element disposed on the vibration diaphragm for adjusting the vibration frequency of the vibration diaphragm.

[0012] In some embodiments, the vibration assembly further includes a fixing member, one end of which is fixedly connected to the vibration diaphragm, and the other end of which is fixedly connected to the inner wall of the cavity.

[0013] In some embodiments, the outlet is disposed opposite to the flow hole in the axial direction of the flow hole.

[0014] In some embodiments, the housing includes: The side shell is a cylindrical structure open at both ends; A first cover plate is connected to the side shell and covers one of the openings of the side shell; The second cover plate is connected to the side shell and covers the opening in the side shell away from the first cover plate. The side shell, the first cover plate and the second cover plate together form the inner cavity. The outlet is located on the second cover plate and / or the side shell; The entrance is located on the side shell.

[0015] In some embodiments, the extension direction of the inlet intersects the extension direction of the flow hole. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the jet pump in one embodiment of this application; Figure 2 yes Figure 1 A cross-sectional view of the jet pump shown; Figure 3 yes Figure 2 The diagram shows a structural schematic of the jet pump from another perspective.

[0018] Figure label: 100. Shell; 110. Inner cavity; 111. First chamber; 112. Second chamber; 120. Inlet; 130. Outlet; 140. Side shell; 150. First cover plate; 160. Second cover plate; 200. Vibration assembly; 210. Vibration diaphragm; 211. Flow hole; 220. Driving component; 230. Frequency tuning component; 240. Fixing component. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] To facilitate a clear description of the technical solutions of this application, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" do not necessarily imply that they are different.

[0022] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0024] It should be noted that, in this application, the terms "in one embodiment," "in one implementation," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in one embodiment," "in one implementation," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "in one embodiment," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner.

[0025] To illustrate the technical solution of this application, the following description is provided in conjunction with specific accompanying drawings and embodiments.

[0026] Please refer to Figures 1 to 3 This application provides a jet pump, including a housing 100 and a vibration assembly 200.

[0027] The housing 100 serves as the main support for the jet pump, comprising an inner cavity 110, an inlet 120, and an outlet 130. The inlet 120 connects the inner cavity 110 to a first external environment, and the outlet 130 connects the inner cavity 110 to a second external environment. The first and second external environments can be different spaces or the same space. The inner cavity 110 provides installation and movement space for the vibration assembly 200. The housing 100 can be cylindrical, elliptical, or square, etc., to accommodate different installation space requirements.

[0028] The vibration assembly 200 is the core moving component of the jet pump and is movably disposed within the inner cavity 110. The vibration assembly 200 divides the inner cavity 110 into a first chamber 111 and a second chamber 112. The first chamber 111 and the second chamber 112 are located on opposite sides of the vibration assembly 200, and the volumes of the first chamber 111 and the second chamber 112 change as the posture of the vibration assembly 200 changes. At least a portion of the vibration assembly 200 can switch between a first posture and a second posture. During the switching of at least a portion of the vibration assembly 200 to the first posture, the volume of the first chamber 111 decreases, and the pressure within the first chamber 111 increases; the volume of the second chamber 112 increases, and the pressure within the second chamber 112 decreases. During the switching of at least a portion of the vibration assembly 200 to the second posture, the volume of the first chamber 111 increases, and the pressure within the first chamber 111 decreases; the volume of the second chamber 112 decreases, and the pressure within the second chamber 112 increases.

[0029] It should be noted that attitude refers to the spatial position of the vibration component 200 or a portion thereof within the inner cavity 110, including spatial position and / or deformed shape.

[0030] For example, the first posture is a position / position range of at least part of the vibration component 200 during the reciprocating motion, and the second posture is another position / position range of at least part of the vibration component 200 during the reciprocating motion; or, the first posture is a deformed shape of at least part of the vibration component 200 during the reciprocating motion, and the second posture is another deformed shape of at least part of the vibration component 200 during the reciprocating motion.

[0031] Inlet 120 is connected to the first chamber 111, and the first chamber 111 is connected to the first external environment through inlet 120. During the process of at least part of the vibration component 200 switching to the second posture, the volume of the first chamber 111 increases and the pressure inside the first chamber 111 decreases. When the vibration component 200 switches to the second posture, the pressure inside the first chamber 111 is less than the pressure of the first external environment, and the fluid from the first external environment flows from inlet 120 to the first chamber 111.

[0032] During the transition of at least a portion of the vibration assembly 200 to the first posture, the volume of the first chamber 111 decreases, and the pressure within the first chamber 111 increases. In the first posture, the vibration assembly 200 blocks at least a portion of the inlet 120, i.e., the vibration assembly 200 is opposite to or in contact with at least a portion of the end face surrounding the inlet 120, thereby blocking at least a portion of the inlet 120. Therefore, when at least a portion of the vibration assembly 200 switches to the first posture, the vibration assembly 200 can prevent fluid from flowing from the first chamber 111 to the first external environment, thereby reducing the possibility of fluid in the first chamber 111 flowing to the first external environment through the inlet 120.

[0033] The vibration assembly 200 has a flow hole 211 connecting the first chamber 111 and the second chamber 112. When at least a portion of the vibration assembly 200 switches to the first posture, the pressure in the first chamber 111 is greater than the pressure in the second chamber 112, causing the fluid in the first chamber 111 to flow to the second chamber 112 through the flow hole 211. The vibration assembly 200 blocks at least a portion of the inlet 120, preventing fluid from flowing from the first chamber 111 to the outside, thereby reducing fluid backflow and ensuring that most of the fluid in the first chamber 111 flows to the second chamber 112 through the flow hole 211, improving the volumetric efficiency and jet efficiency of the jet pump.

[0034] The outlet 130 is connected to the second chamber 112, which is connected to the second external environment through the outlet 130. During the transition of at least a portion of the vibration assembly 200 to the second posture, the volume of the second chamber 112 decreases, and the pressure within the second chamber 112 increases. When at least a portion of the vibration assembly 200 transitions to the second posture, the pressure within the second chamber 112 is greater than the pressure of the second external environment, and the fluid within the second chamber 112 flows from the outlet 130 to the second external environment.

[0035] At least a portion of the vibration assembly 200 reciprocates between a first posture and a second posture, allowing fluid to flow along a path of first external environment → inlet 120 → first chamber 111 → flow hole 211 → second chamber 112 → outlet 130 → second external environment. This cyclical switching of at least a portion of the vibration assembly 200 between the first and second postures enables continuous fluid pumping.

[0036] In the jet pump provided in this application embodiment, when at least a portion of the vibration component 200 switches to the second posture, the volume of the first chamber 111 increases, and the pressure inside the first chamber 111 decreases. When at least a portion of the vibration component 200 switches to the second posture, the pressure inside the first chamber 111 is less than the first external pressure, and fluid enters the first chamber 111 through the inlet 120. When at least a portion of the vibration component 200 switches to the first posture, the volume of the first chamber 111 decreases, and the pressure inside the first chamber 111 increases. When at least a portion of the vibration component 200 switches to the first posture, the pressure inside the first chamber 111 is greater than the pressure inside the second chamber 112, and fluid in the first chamber 111 flows into the second chamber 112 through the flow hole 211. When at least a portion of the vibration component 200 switches to the first posture, the vibration component 200 actively blocks at least a portion of the inlet 120, which can reduce the possibility of fluid in the first chamber 111 flowing to the first external environment through the inlet 120 and reduce backflow. When at least a portion of the vibration assembly 200 switches back to the second posture, fluid enters the first chamber 111 through the inlet 120, and fluid in the second chamber 112 flows to the outside through the outlet 130. The reciprocating switching of at least a portion of the vibration assembly 200 between the first and second postures enables fluid transport. Utilizing the posture changes of the vibration assembly 200 itself to achieve valve-like shut-off and open-off functions reduces backflow. Furthermore, it eliminates the need for additional active or passive valves, simplifying the structure of the jet pump.

[0037] Please refer to Figure 2 and Figure 3 In some embodiments, the vibration assembly 200 includes a vibration diaphragm 210 and a drive element 220.

[0038] The vibration diaphragm 210 is the core component of the vibration assembly 200, and is in the form of a thin sheet or a diaphragm. The vibration diaphragm 210 can be made of metallic elastic materials (such as beryllium bronze, stainless steel, titanium alloy, nickel-based alloy), rubber or thermoplastic elastomers (such as fluororubber, silicone rubber, ethylene propylene rubber, polyurethane), or composite materials (such as a metal matrix covered with a rubber layer, fiber-reinforced plastics), etc. The vibration diaphragm 210 is disposed in the inner cavity 110, dividing the inner cavity 110 into a first chamber 111 and a second chamber 112. A flow hole 211 is formed on the vibration diaphragm 210, connecting the first chamber 111 and the second chamber 112. The outer periphery of the vibration diaphragm 210 is located between the inlet 120 and the outlet 130, ensuring spatial separation between the first chamber 111 corresponding to the inlet 120 side and the second chamber 112 corresponding to the outlet 130 side.

[0039] Optionally, the outer periphery of the vibration diaphragm 210 is sealed to the inner wall of the inner cavity 110, thereby sealing the vibration diaphragm 210 with the inner wall of the inner cavity 110. This sealing connection can be achieved by either the outer periphery of the vibration diaphragm 210 adhering to the inner wall of the inner cavity 110, or by fixing the outer periphery of the vibration diaphragm 210 to the inner wall of the inner cavity 110 using methods such as welding, riveting, bolting, bonding, or snap-fitting. This sealed connection between the outer periphery of the vibration diaphragm 210 and the inner wall of the inner cavity 110 ensures reliable isolation between the first chamber 111 and the second chamber 112, eliminating wear and leakage problems associated with dynamic sealing.

[0040] Optionally, the outer periphery of the vibration diaphragm 210 is spaced apart from the inner wall of the inner cavity 110 to facilitate the deformation of the vibration diaphragm 210.

[0041] The drive component 220 is connected to the vibrating diaphragm 210 and is disposed on one or both sides of the vibrating diaphragm 210. The drive component 220 is connected to the central region or a specific position of the vibrating diaphragm 210. The drive component 220 provides the driving force for reciprocating vibration of the vibrating diaphragm 210, and is used to drive the vibrating diaphragm 210 to switch between a first posture and a second posture. The drive component 220 can be a piezoelectric ceramic actuator, an electromagnetic actuator, a voice coil motor, a pneumatic actuator, or a mechanical cam drive, etc.

[0042] In the first posture, a portion (outer periphery or center) of the vibrating diaphragm 210 protrudes and deforms towards the inlet 120 to conform to the end face around the inlet 120, thereby blocking and sealing the inlet 120. In the second posture, the vibrating diaphragm 210 protrudes and deforms towards the outlet 130.

[0043] In the above embodiment, the reciprocating vibration deformation of the diaphragm 210 directly generates the volume change of the first chamber 111 and the second chamber 112, eliminating the need for a rigid piston's guiding and sealing structure, thus reducing friction loss and manufacturing costs. The dynamic blocking function of the inlet 120 in the first posture achieves unidirectional fluid shut-off in a valveless manner, eliminating the need for additional active or passive valves and simplifying the structural complexity of the jet pump.

[0044] In other embodiments, the drive assembly may further include a rigid partition and a linear drive structure. The rigid partition is slidably disposed in the inner cavity 110, and a flow hole 211 is formed on the rigid partition. The drive end of the linear drive structure is connected to the rigid partition. Driven by the linear drive structure, the rigid partition can slide back and forth between a first posture and a second posture. In the first posture, the rigid partition covers the inlet 120.

[0045] Optionally, the first posture of the rigid partition refers to the position of the rigid partition when the pressure in the first chamber 111 is greater than the pressure in the second chamber 112, and the rigid partition covers the inlet 120. The second posture of the rigid partition refers to the position of the rigid partition when the pressure in the first chamber 111 is less than the first external pressure, the pressure in the first chamber 111 is less than the pressure in the second chamber 112, and the pressure in the second chamber 112 is greater than the second external pressure.

[0046] In some embodiments, the vibrating diaphragm 210 includes a first deformable portion and a second deformable portion. The first deformable portion is the central region of the vibrating diaphragm 210 and is connected to the drive member 220. The second deformable portion is the outer annular region of the vibrating diaphragm 210, surrounding the first deformable portion, and is either circular or corrugated. The second deformable portion has an inner periphery and an outer periphery, and the inner periphery of the second deformable portion is connected to the outer periphery of the first deformable portion. The elastic modulus of the second deformable portion is less than that of the first deformable portion.

[0047] In the above embodiment, the second deformation part has a small elastic modulus and excellent flexibility and extensibility, giving it a large deformation capacity. When the vibration diaphragm 210 reciprocates, the second deformation part can provide sufficient stroke margin for the reciprocating motion of the first deformation part to ensure that the first deformation part has sufficient stroke, thereby allowing the vibration diaphragm 210 to block the inlet 120 in the first posture.

[0048] Optionally, the outer periphery of the second deformable portion is sealed to the inner wall of the inner cavity 110. When the vibration diaphragm 210 reciprocates, the second deformable portion can absorb edge stress, protect the connection interface between the vibration diaphragm 210 and the housing 100, and prevent damage to the sealing performance at the connection between the vibration diaphragm 210 and the housing 100.

[0049] In some embodiments, when the vibrating diaphragm 210 is in a static equilibrium state, the second deformation portion is compressed between the inner wall of the inner cavity 110 and the first deformation portion.

[0050] It should be noted that the static equilibrium posture is the natural state of the vibrating diaphragm 210 when it is not actively driven by the driving member 220. At this time, the vibrating diaphragm 210 is in a state of mechanical equilibrium, and the internal stress is uniformly or symmetrically distributed. The static equilibrium posture is between the first posture and the second posture and can be used as the neutral reference point for the reciprocating vibration of the vibrating diaphragm 210. The static equilibrium posture is determined by the preload of the vibrating diaphragm 210, the internal stress of the material, gravity, and hydrostatic pressure. By adjusting the compression of the second deformation part, the initial installation position of the driving member 220, or the axial dimension of the housing 100, the static equilibrium posture can be set to any posture within the stroke range.

[0051] In a static equilibrium state, the radial dimension of the second deformable part (the direction in which the first deformable part points towards the inner wall of the inner cavity 110) is smaller than its natural length, and it is in a compressed state. The amount of compression of the second deformable part can be selected according to the preload requirement and stroke range. The second deformable part in the compressed state can take the form of a corrugated flattened shape, an arc-shaped compressed shape, or a folded stacked shape.

[0052] In the above embodiment, the compression state causes the second deformation part to store elastic potential energy, forming a pre-tightening support for the first deformation part. The pre-tightening force causes the first deformation part to tend to bulge out even in a static equilibrium posture, shortening the stroke to reach the first or second posture and improving the response speed.

[0053] In some embodiments, the second deformation part has a stretchable corrugated structure, with the crests and troughs of the corrugated structure alternating along the radial direction of the second deformation part (the direction in which the first deformation part points to the inner wall of the inner cavity 110). When the vibrating diaphragm 210 reciprocates, the second deformation part can provide sufficient travel margin for the reciprocating motion of the first deformation part to ensure that the first deformation part has sufficient travel, so that the vibrating diaphragm 210 can block the inlet 120 in the first posture.

[0054] In other embodiments, the second deformable part may also have an arc-shaped structure or a folded skirt structure, etc.

[0055] Please refer to Figure 2 In some embodiments, the vibration assembly 200 further includes a frequency tuning element 230, which is disposed on the vibration diaphragm 210 and is used to adjust the vibration frequency of the vibration diaphragm 210.

[0056] The frequency tuning element 230 is a mass block or stiffness adjustment element attached to the vibrating diaphragm 210. By changing the mass distribution or local stiffness of the vibrating diaphragm 210, the inherent vibration frequency of the vibrating diaphragm 210 is adjusted. The frequency tuning element 230 can be set in the central region, eccentric region, or circumferentially distributed of the vibrating diaphragm 210, and there can be one or more of them. It can be freely adjusted according to requirements.

[0057] In the above embodiments, precise control of the dynamic characteristics of the vibrating diaphragm 210 is achieved using a simple additional mass element without changing the main material of the vibrating diaphragm 210. Through optimized selection of the mass, position, and material of the frequency tuning element 230, the frequency tuning element 230 can specifically adjust the natural frequency, modal shape, and damping characteristics of the vibrating diaphragm 210, enabling the jet pump's operating frequency to match the optimal efficiency point, or avoiding system resonance and unfavorable modes, significantly improving energy conversion efficiency and operational stability. When the drive element 220 drives the vibrating diaphragm 210, the mass inertia of the frequency tuning element 230 affects the acceleration response and modal shape of the vibrating diaphragm 210. A rationally designed frequency tuning element 230 can make the vibrating diaphragm 210 exhibit ideal piston-like translation or dome-like deformation at the operating frequency, suppressing non-ideal modes such as edge vibration and wrinkle deformation of the vibrating diaphragm 210, making the shielding of the inlet 120 in the first posture more reliable and the suction in the second posture more complete, optimizing volumetric efficiency and jet efficiency. A single jet pump can cover multiple operating modes through the state adjustment of the frequency modulation component 230, which enhances the adaptability of the jet pump to operating conditions and reduces design and manufacturing costs.

[0058] Please refer to Figure 2 and Figure 3 In some embodiments, the vibration assembly 200 further includes a fixing member 240, one end of which is fixedly connected to the vibration diaphragm 210, and the other end of which is fixedly connected to the inner wall of the inner cavity 110 away from the vibration diaphragm 210.

[0059] The fastener 240 is a support element connecting the vibrating diaphragm 210 to the inner wall of the inner cavity 110, and has a rod-like, strip-like, plate-like, or mesh-like structure. The number of fasteners 240 can be one (centrally symmetrically arranged) or multiple (circumferentially distributed or asymmetrically distributed), which can be optimized according to support requirements and vibration characteristics. One end of the fastener 240 is fixedly connected to the vibrating diaphragm 210, and the connection position can be the central area, eccentric area, or outer periphery of the vibrating diaphragm 210. The connection method can be welding, riveting, bolting, bonding, snap-fit ​​connection, or integral molding. The end of the fastener 240 away from the vibrating diaphragm 210 is fixedly connected to the inner wall of the inner cavity 110, and the connection method can be welding, riveting, bolting, bonding, snap-fit ​​connection, or integral molding.

[0060] In the above embodiment, the fixing member 240 provides mechanical support for the vibration diaphragm 210, improving the stability, load-bearing capacity, and environmental adaptability of the vibration diaphragm 210. The supporting function of the fixing member 240 can limit the non-working direction displacement of the vibration diaphragm 210, preventing the vibration diaphragm 210 from undergoing excessive deformation, lateral displacement, or collision and wear with the housing 100 under pressure difference, inertial force, or external disturbance, thereby extending the service life of the vibration diaphragm 210.

[0061] Please refer to Figure 2In some embodiments, the outlet 130 is disposed opposite to the flow hole 211 along the axial direction of the flow hole 211, forming a straight or near-straight flow channel layout. The flow hole 211 is formed on the vibration assembly 200, and the outlet 130 is formed on the housing 100 (such as the second cover plate 160 or the side shell 140), and the two are aligned or partially overlapped in the axial direction of the flow hole 211. The opposite arrangement can shorten the flow channel length between the flow hole 211 and the outlet 130, reducing fluid turning and diffusion losses. When the volume of the first chamber 111 decreases and the pressure of the first chamber 111 increases, and the volume of the second chamber 112 increases and the pressure of the second chamber 112 decreases, the fluid in the first chamber 111 flows out through the flow hole 211 and forms a jet. The jet points directly to the outlet 130, which can prevent the fluid from the second external environment from flowing into the chamber through the outlet 130 to a certain extent, reducing backflow at the outlet 130.

[0062] Please refer to Figure 2 In some embodiments, multiple flow holes 211 are provided, and the multiple flow holes 211 are distributed in a ring array around the center of the vibration diaphragm 210 to ensure the uniformity and stability of the flow field, avoid flow deviation, eddies or vibration imbalance caused by single hole or asymmetrical layout, so as to optimize the pressure distribution in the second chamber 112 and the smoothness of the flow rate at the outlet 130, and reduce noise and pulse.

[0063] In some embodiments, the flow hole 211 is a tapered hole, with the large-diameter end of the tapered hole close to the first chamber 111 and the small-diameter end close to the second chamber 112. When the fluid enters from the large-diameter end, the flow velocity is low and the pressure is high, making full use of the pressure energy of the first chamber 111. When the fluid flows along the inner wall of the tapered hole, the cross-section of the tapered hole contracts, the flow velocity of the fluid increases, and the pressure decreases. When it reaches the small-diameter end, the flow velocity of the fluid reaches its maximum, forming a high-speed jet that enters the second chamber 112 to enhance the jetting effect.

[0064] Please refer to Figure 2 and Figure 3 Optionally, the housing includes: a side shell 140, a first cover plate 150, and a second cover plate 160. The side shell 140 is a cylindrical structure with openings at both ends. The first cover plate 150 is connected to the side shell 140 and covers one of the openings of the side shell 140. The second cover plate 160 is connected to the side shell 140 and covers the opening in the side shell 140 that is away from the first cover plate 150. The side shell 140, the first cover plate 150, and the second cover plate 160 enclose an inner cavity 110. An outlet 130 is opened on the second cover plate 160 and / or the side shell 140, and an inlet 120 is opened on the side shell 140.

[0065] By way of example and not limitation, the housing 100 includes a side shell 140, a first cover plate 150, and a second cover plate 160, which together form an inner cavity 110. The side shell 140 is the cylindrical main body of the housing 100, and has a cylindrical, elliptical, polygonal, or irregularly shaped cylindrical structure with openings at both ends, providing the lateral boundary of the inner cavity 110. The axial length of the side shell 140 determines the volume of the inner cavity 110 and the travel range of the vibration diaphragm 210. The first cover plate 150 and the second cover plate 160 are both end closures of the housing 100. The first cover plate 150 is connected to one end of the side shell 140 and covers one opening of the side shell 140, and the second cover plate 160 is connected to the other end of the side shell 140 and covers the other opening of the side shell 140. The first cover plate 150 and the second cover plate 160 form the axial boundary of the inner cavity 110. The connection between the first cover plate 150 and the side shell 140 can be achieved by flange bolts, threaded connections, clamp connections, welding, or bonding; the connection between the second cover plate 160 and the side shell 140 can also be achieved by flange bolts, threaded connections, clamp connections, welding, or bonding. An inlet 120 is formed on the first cover plate 150 and / or the side shell 140. Preferably, the inlet 120 is formed on the side shell 140 so that it can be blocked when the vibrating diaphragm 210 deforms. An outlet 130 can be formed solely on the second cover plate 160, allowing fluid to exit axially. An outlet 130 can be formed solely on the side shell 140, allowing fluid to exit laterally. An outlet 130 can be formed simultaneously on both the second cover plate 160 and the side shell 140, creating multi-directional flow branching.

[0066] The detachable design of the first cover plate 150 and the second cover plate 160 allows the inner cavity 110 to be opened, facilitating the installation, replacement and maintenance of core components such as the vibration diaphragm 210 and the drive unit 220.

[0067] In some embodiments, the extending direction of inlet 120 intersects the extending direction of flow hole 211. Specifically, inlet 120 is a channel formed on side shell 140, and its extending direction, i.e., the direction of the axis of inlet 120, can be radial (perpendicular to the central axis of side shell 140), inclined (at a certain angle with the radial direction), or tangential (parallel to the axial direction of side shell 140). The extending direction of inlet 120 determines the initial flow direction of fluid entering the first chamber 111. The extending direction of flow hole 211, i.e., the direction of the axis of flow hole 211, is usually axial (parallel to the central axis of side shell 140), but can also be inclined (at a certain angle with the axial direction). The extending direction of flow hole 211 determines the flow direction of jet entering the second chamber 112.

[0068] In the above embodiment, the extension direction of the inlet 120 and the extension direction of the flow hole 211 are arranged to intersect, which can avoid the inlet 120 and the flow hole 211 being directly connected, prevent efficiency loss and flow field unevenness caused by short-circuit flow, ensure that the volume of the first chamber 111 is effectively utilized, and improve volumetric efficiency; and make the fluid need to change its flow direction after entering the first chamber 111 from the inlet 120 before it can flow out through the flow hole 211. The change of flow direction increases the residence time and mixing opportunity of the fluid in the first chamber 111.

[0069] When the vibrating diaphragm 210 switches to the second posture, the volume of the first chamber 111 increases, and the pressure inside the first chamber 111 decreases. When the pressure inside the first chamber 111 is less than the pressure inside the second chamber 112, the fluid in the second chamber 112 may flow to the first chamber 111 through the flow hole 211. However, in the above embodiment, the extension direction of the inlet 120 is intersected with the extension direction of the flow hole 211. Therefore, the returning fluid must enter the first chamber 111 along the flow hole 211 and then change its flow direction before flowing out from the inlet 120. This increases the length of the flow path and the number of direction changes, thereby reducing the possibility of fluid flowing from the inlet 120 to the outside environment.

[0070] In some embodiments, the inlet 120 is an irregularly shaped orifice. For example, the central axis of the inlet 120 is not straight; alternatively, the central axis of the inlet 120 may be bent or wavy. Furthermore, the cross-section of the inlet 120 may differ at different locations along the extension direction of its central axis; alternatively, the inlet 120 may be a tapered orifice. Different flow effects can be achieved by changing the shape of the inlet 120.

[0071] In some embodiments, the outlet 130 is an irregularly shaped orifice. For example, the central axis of the outlet 130 is not straight. Optionally, the central axis of the outlet 130 may be bent or wavy. Furthermore, the cross-section of the outlet 130 may be different at different locations along the extension direction of the central axis; optionally, the outlet 130 may be a tapered orifice. Different flow effects can be achieved by changing the shape of the outlet 130.

[0072] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A jet pump, characterized in that, include: The housing has an inner cavity, an inlet, and an outlet, the inlet connecting the inner cavity to a first external environment, and the outlet connecting the inner cavity to a second external environment; A vibration assembly is disposed in the inner cavity to divide the inner cavity into a first chamber and a second chamber. The inlet is connected to the first chamber, and the outlet is connected to the second chamber. The vibration assembly has a flow hole that connects the first chamber and the second chamber. Wherein, at least a portion of the vibration component can switch between a first posture and a second posture; during the process of at least a portion of the vibration component switching to the first posture, the volume of the first chamber decreases and the volume of the second chamber increases, and in the first posture, the vibration component blocks at least a portion of the entrance; during the process of at least a portion of the vibration component switching to the second posture, the volume of the first chamber increases and the volume of the second chamber decreases.

2. The jet pump according to claim 1, characterized in that, The vibration assembly includes: A vibration diaphragm is disposed in the inner cavity and divides the inner cavity into a first chamber and a second chamber. The outer periphery of the vibration diaphragm is located between the inlet and the outlet. The flow hole is formed on the vibration diaphragm. A driving component, connected to the vibrating diaphragm, is used to drive the vibrating diaphragm to reciprocate and switch between the first posture and the second posture. In the first posture, the vibration diaphragm protrudes and deforms towards the inlet to fit against the end face around the inlet.

3. The jet pump according to claim 2, characterized in that, The vibration diaphragm includes: The first deformable part is connected to the driving component; The second deformation part is arranged around the periphery of the first deformation part, and the inner periphery of the second deformation part is connected to the outer periphery of the first deformation part. The elastic modulus of the second deformed part is less than that of the first deformed part.

4. The jet pump according to claim 3, characterized in that, When the vibrating diaphragm is in a static equilibrium state, the second deformable part is compressed between the inner wall of the inner cavity and the first deformable part.

5. The jet pump according to claim 3, characterized in that, The second deformable part has a stretchable corrugated structure, wherein the crests and troughs of the corrugated structure are arranged alternately along the radial direction of the second deformable part.

6. The jet pump according to any one of claims 2 to 5, characterized in that, The vibration assembly also includes a frequency tuning element disposed on the vibration diaphragm for adjusting the vibration frequency of the vibration diaphragm.

7. The jet pump according to any one of claims 2 to 5, characterized in that, The vibration assembly also includes a fixing member, one end of which is fixedly connected to the vibration diaphragm, and the other end of which is fixedly connected to the inner wall of the cavity.

8. The jet pump according to any one of claims 1 to 5, characterized in that, The outlet is positioned opposite to the flow hole along its axial direction.

9. The jet pump according to any one of claims 1 to 5, characterized in that, The housing includes: The side shell is a cylindrical structure open at both ends; A first cover plate is connected to the side shell and covers one of the openings of the side shell; The second cover plate is connected to the side shell and covers the opening in the side shell away from the first cover plate. The side shell, the first cover plate and the second cover plate together form the inner cavity. The outlet is located on the second cover plate and / or the side shell. The entrance is located on the side shell.

10. The jet pump according to any one of claims 1 to 5, characterized in that, The extension direction of the inlet intersects with the extension direction of the flow hole.

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