Fluid generator

Abstract

The invention discloses a fluid generator, belongs to the technical field of power generation devices, and aims to solve the problem that driving fluid is easy to leak to a stator cavity when a middle shaft of an existing generator penetrates through a partition plate. The fluid generator comprises a shell, the interior of the shell is divided into an impeller rotor cavity and a stator cavity, and a liquid inlet pipe is communicated to the impeller rotor cavity; the stator assembly is arranged in the stator cavity, and the stator assembly comprises a stator and a stator mounting shaft; the rotor assembly is arranged in the impeller rotor cavity, the rotor assembly comprises a rotor and a rotor mounting shaft which are fixedly connected, and the rotor is in magnetic coupling connection with the stator; and the impeller is arranged in the impeller rotor cavity, and the impeller is fixedly connected with the rotor assembly. The stator mounting shaft and the rotor mounting shaft of the fluid generator are mutually independent, the stator and the rotor are connected only through magnetic coupling, the shafts do not need to penetrate through a partition plate between an impeller rotor cavity and a stator cavity, use is safer, and the working state of the fluid generator is more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation devices, in particular to a fluid generator. Background Art

[0002] The generator mainly consists of a stator and a rotor. The rotation of the rotor cuts the magnetic lines of force, thereby generating current. Generators can be further divided into several types according to the different ways of driving the rotor to rotate. Among them, the fluid generator uses flowing fluids such as kerosene, water and air to drive the blades. The blades are fixedly connected to the rotor. The rotation of the blades can make the rotor rotate and cut the magnetic lines of force, thereby generating electricity.

[0003] Existing generators usually include a main shaft, on which the stator and the rotor are sleeved, the rotor is fixedly connected to the main shaft and the two rotate synchronously, and the stator and the main shaft are movably connected. Since the fluid generator is filled with fluids such as kerosene, water and air, the space where the rotor is located needs to be isolated from the space where the stator is located to prevent the fluid in the space where the rotor is located from entering the space where the stator is located.

[0004] At present, the commonly used method is to open a through hole on the partition, and the main shaft passes through the through hole to achieve a part in the space where the rotor is located and the other part in the space where the stator is located. In order to avoid leakage, a seal is set between the outer periphery of the main shaft and the edge of the partition through hole to prevent fluid leakage. However, when the seal is not installed properly, the size and longitude are poor, or the seal fails after a long time, the driving fluid will still leak into the space where the stator is located, affecting the normal use of the fluid generator. Summary of the invention

[0005] The purpose of the present invention is to provide a fluid generator, which solves the problem that when the shaft of the existing generator passes through the partition between the impeller rotor cavity and the stator cavity, the fluid leaks into the stator cavity, and the working state of the fluid generator is more stable.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A fluid generator comprises: a shell, the interior of which is divided into an impeller rotor chamber and a stator chamber, the shell being provided with a liquid inlet pipe, the liquid inlet pipe being connected to the impeller rotor chamber, and the fluid for driving the fluid generator enters the impeller rotor chamber through the liquid inlet pipe; a stator assembly, arranged in the stator chamber, the stator assembly comprising a stator and a stator mounting shaft, the stator sleeve being arranged on the stator mounting shaft; a rotor assembly, arranged in the impeller rotor chamber, the rotor assembly comprising a fixedly connected rotor and a rotor mounting shaft, the rotor being magnetically coupled to the stator; and an impeller, arranged in the impeller rotor chamber, the impeller being fixedly connected to the rotor assembly.

[0008] In one of the preferred embodiments, the stator includes a magnet fixing plate, at least two first magnets and at least two second magnets, the first magnets and the second magnets are arranged at intervals and in a ring shape on the magnet fixing plate, and the N poles and S poles of the first magnets and the second magnets are arranged oppositely.

[0009] In one of the preferred embodiments, one of the first magnet and the second magnet is installed at the origin of one side of the magnet fixing disk, the first magnet and the second magnet are arranged at intervals, and all of the first magnets and the second magnets are arranged in a ring on one side of the magnet fixing disk; or, a ring structure composed of the first magnet and the second magnet arranged at intervals is respectively provided on both sides of the magnet fixing disk; at any installation position on the magnet fixing disk, one of the first magnet and the second magnet is installed on one side of the magnet fixing disk, and the other of the first magnet and the second magnet is installed on the other side of the magnet fixing disk.

[0010] In one of the preferred embodiments, the stator assembly includes one stator; or, the stator assembly includes at least two stators arranged in sequence along the extension direction of the stator installation shaft, and all of the stators are sequentially sleeved on the stator installation shaft.

[0011] In one of the preferred embodiments, when the stator assembly includes four stators arranged in sequence along the extension direction of the stator mounting axis, the magnet fixing disk closest to and farthest from the rotor assembly is provided with a ring-shaped structure consisting of the first magnet and the second magnet arranged at an interval on one side, and the other two magnet fixing disks are provided with a ring-shaped structure consisting of the first magnet and the second magnet arranged at an interval on both sides.

[0012] In one of the preferred embodiments, on the magnet fixing disk closest to the rotor assembly, all of the first magnets and the second magnets are arranged on a surface away from the rotor assembly, and one second magnet is arranged at the origin of the magnet fixing disk.

[0013] In one preferred embodiment, the first magnet and / or the second magnet is made of rare earth neodymium iron boron permanent magnet.

[0014] In one of the preferred embodiments, the rotor assembly further includes two groups of bearings, which are respectively arranged at two ends of the rotor mounting shaft, and the bearings are made of ceramics.

[0015] In one of the preferred embodiments, the fluid generator further comprises a voltage and current stabilizing circuit board, and the voltage and current stabilizing circuit board comprises a three-phase rectifier bridge and a charging rectifier module which are isolated from each other.

[0016] In one of the preferred embodiments, a filter is installed on the liquid inlet pipe, and the filter is used to filter the fluid entering the impeller rotor cavity.

[0017] The stator assembly of the fluid generator disclosed in the present invention is arranged in the stator cavity, and the rotor assembly is arranged in the impeller rotor cavity. The stator mounting shaft and the rotor mounting shaft are independent of each other, and the stator and the rotor are connected only by magnetic coupling, which solves the problem that the fluid is easily leaked into the stator cavity when the shaft of the existing generator passes through the partition between the impeller rotor cavity and the stator cavity. It is safer to use and the working state of the fluid generator is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a fluid generator provided by a specific embodiment of the present invention;

[0019] Figure 2 It is a front view of a fluid generator provided by a specific embodiment of the present invention;

[0020] Figure 3 yes Figure 2 Middle AA section view;

[0021] Figure 4 is a structural schematic diagram of another fluid generator provided by a specific embodiment of the present invention;

[0022] Figure 5 is a front view of another fluid generator provided by a specific embodiment of the present invention;

[0023] Figure 6 yes Figure 5 Middle BB section view;

[0024] Figure 7 yes Figure 5 Middle CC section view;

[0025] Figure 8 yes Figure 7 Middle DD section view;

[0026] Fig. 9 yes Figure 7 A partial enlarged view of point E in the middle.

[0027] In the figure:

[0028] 1. Shell; 2. Stator assembly; 4. Impeller; 5. Voltage and current stabilizing circuit board; 11. Impeller rotor cavity; 12. Stator cavity; 13. Liquid inlet pipe; 21. Stator; 22. Stator mounting shaft; 23. Heat dissipation spacer ring; 24. Motor spacer; 31. Rotor; 32. Rotor mounting shaft; 33. Bearing; 211. Magnet fixing plate; 212. First magnet; 213. Second magnet. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] This embodiment discloses a fluid generator, which uses a medium to drive the impeller to rotate and generate electricity. The specific type of medium is not limited, as long as it can provide driving force for the impeller. In this embodiment, flowing aviation kerosene, water and air (preferably high-pressure air) can be used to drive the impeller to rotate continuously, but is not limited to. Among them, aviation kerosene flows more smoothly, the pressure consistency of the liquid is good, and the impeller rotates more smoothly; the chemical properties of aviation kerosene are stable and are less affected by temperature. The fluid generator can be used in various regions and has strong product competitiveness. The advantages of using water as a medium are low cost and a wide range of applications; the advantage of using air (especially high-pressure air) as a medium is that it is corrosive to the impeller, and there are more types of materials for making impellers.

[0036] like Figures 1 to 9 As shown, the fluid generator includes a shell 1, a stator assembly 2, a rotor assembly and an impeller 4, and the impeller 4 is fixedly connected to the rotor assembly, wherein the interior of the shell 1 is divided into an impeller rotor chamber 11 and a stator chamber 12, the stator assembly 2 is arranged in the stator chamber 12, and the rotor assembly and the impeller 4 are both arranged in the impeller rotor chamber 11; a liquid inlet pipe 13 is opened on the shell 1, and the liquid inlet pipe 13 is connected to the impeller rotor chamber 11, and the fluid used to drive the fluid generator enters the impeller rotor chamber 11 through the liquid inlet pipe 13.

[0037] The stator assembly 2 includes a stator 21 and a stator mounting shaft 22, the stator 21 is sleeved on the stator mounting shaft 22, and the rotor assembly includes a rotor 31 and a rotor mounting shaft 32 which are fixedly connected, and the rotor 31 is magnetically coupled to the stator 21. The stator mounting shaft 22 and the rotor mounting shaft 32 are independent of each other, and the stator 21 and the rotor 31 are connected only by magnetic coupling, which solves the problem that the fluid is easily leaked into the stator cavity 12 when the shaft of the existing generator passes through the partition between the impeller rotor cavity 11 and the stator cavity 12, and the use is safer, and the working state of the fluid generator is more stable.

[0038] In order to improve the safety of use, the edge of the impeller 4 is designed to be sharper. Without affecting the structural strength and rotation stability, the edge of the impeller 4 can cut impurities such as fine paper scraps and raw tape, preventing these impurities from entering the connection between the rotor mounting shaft 32 and other parts, and avoiding the presence of impurities that affect the normal rotation of the impeller 4 and the rotor 31.

[0039] The shape and size of the liquid inlet pipe 13 are not limited. In order to reduce fluid resistance, the liquid inlet pipe 13 is used as a straight pipe as much as possible. In order to increase the power generation capacity, the diameter of the liquid inlet pipe 13 can be increased, so that more fluid enters the impeller rotor cavity 11 per unit time, the impeller 4 rotates faster, and the rotor 31 can cut the magnetic lines of force faster.

[0040] The stator 21 includes a magnet fixing plate 211, at least two first magnets 212 and at least two second magnets 213, wherein the first magnets 212 and the second magnets 213 are arranged at intervals and in a ring shape on the magnet fixing plate 211. The first magnets 212 and the second magnets 213 are made of the same material, but the N pole and the S pole are arranged oppositely, which is conducive to improving assembly efficiency. The staff can quickly and accurately install the first magnets 212 and the second magnets 213 on the magnet fixing plate 211 according to the appearance, without having to spend time distinguishing the N pole and the S pole of each magnet when installing it.

[0041] According to the different installation positions of the first magnet 212 and the second magnet 213, the stator 21 can be divided into two structures. Specifically, in one structure, one of the first magnet 212 and the second magnet 213 is installed at the origin of one side of the magnet fixing disk 211, the first magnet 212 and the second magnet 213 are arranged at intervals, and all the first magnets 212 and the second magnets 213 are arranged in a ring on one side of the magnet fixing disk 211. Among them, the hole corresponding to the outer circle of the center hole plane is the origin, and whether the first magnet 212 or the second magnet 213 is installed at the origin can be determined according to the use requirements. Of course, it is also feasible to specify other positions as the origin, which helps to determine the starting assembly position of the magnet.

[0042] In this embodiment, during installation, the second magnet 213 is placed on the origin of the A surface of the magnet fixing plate 211 with the concave surface facing upward, the internal hexagonal cylindrical screw is inserted into the external hexagonal through hole, and the second magnet 213 is fixed by a riveted nut column; the first magnet 212 is respectively installed on the left and right sides of the second magnet 213, thereby forming an alternating arrangement of the first magnet 212 and the second magnet 213.

[0043] The above structure is that the first magnet 212 and the second magnet 213 are installed on a single surface of the magnet fixing disk 211, and the first magnet 212 and the second magnet 213 can also be installed on both surfaces of the magnet fixing disk 211. That is, in another structure, an annular structure formed by the first magnet 212 and the second magnet 213 arranged at intervals is respectively provided on both surfaces of the magnet fixing disk 211; at any installation position on the magnet fixing disk 211, one of the first magnet 212 and the second magnet 213 is installed on one surface of the magnet fixing disk 211, and the other of the first magnet 212 and the second magnet 213 is installed on the other surface of the magnet fixing disk 211.

[0044] The magnet fixing disk 211 is divided into an A surface and a B surface. During installation, the first magnet 212 and the second magnet 213 are placed on the A surface of the magnet fixing disk 211 at intervals, and the inner hexagonal cylindrical screw is inserted into the outer hexagonal through hole. The first magnet 212 and the second magnet 213 can be fixed on the A surface of the magnet fixing disk 211 with the concave surface facing upward by pressing the rivet nut column; then turn over the magnet fixing disk 211 and start to install the B surface. The magnets on the B surface are opposite to the magnets on the A surface (the N pole of the first magnet 212 and the S pole of the second magnet 213 are respectively attached to the surface of the magnet fixing disk 211, or the S pole of the first magnet 212 and the N pole of the second magnet 213 are respectively attached to the surface of the magnet fixing disk 211).

[0045] The specific number of stators 21 included in the stator assembly 2 is not limited. Figures 1 to 3 As shown, the stator assembly 2 includes a stator 21, the overall structure is simpler and more reasonable, the whole machine is small in size, and it is more convenient to use. If higher power is required, the stator assembly 2 includes at least two stators 21 arranged in sequence along the extension direction of the stator installation shaft 22, and all the stators 21 are sequentially sleeved on the stator installation shaft 22, and the functions of all the stators 21 are the same.

[0046] When the stator assembly 2 includes four stators 21 arranged in sequence along the extending direction of the stator installation axis 22, as shown in FIG. Figures 4 to 9 As shown, the magnet fixing disks 211 closest to and farthest from the rotor assembly are both provided with an annular structure consisting of a first magnet 212 and a second magnet 213 arranged at intervals on one side, and the two magnet fixing disks 211 located in the middle are both provided with an annular structure consisting of a first magnet 212 and a second magnet 213 arranged at intervals on both sides.

[0047] During installation, the rolling bearing and the stator mounting shaft 22 are sequentially mounted on the motor fixing frame, and the heat dissipation spacer 23, the motor single-sided magnet disk, the motor coil, the motor spacer 24, the heat dissipation spacer 23, the motor double-sided magnet disk, the motor coil, the motor spacer 24, the heat dissipation spacer 23, the motor double-sided magnet disk, the motor coil, the motor spacer 24, the heat dissipation spacer 23, and the motor single-sided magnet disk are sequentially mounted on the stator mounting shaft 22 of the motor fixing frame; the flat washer, the thin nut, the flat washer, and the rolling bearing are sequentially mounted on the stator mounting shaft 22, and finally the fixed disk on the motor is tightened and sealed with an M4×100 hexagon socket head screw. It should be noted that the installation method of the other structures of the fluid generator is still the same as that of the prior art, which will not be repeated here.

[0048] In order to improve the stability of the installation, the structure described in the previous paragraph can be slightly modified. Specifically, the assembled stator assembly 2 is installed on the hole-type coupling, and the upper end of the hole-type coupling is pre-tightened with a set screw, and then the hole-type coupling and the coupling cover are fixed together with a press; then the whole structure is installed under the motor fixing frame, and the uppermost hole of the hole-type coupling is inserted together with the stator installation shaft 22 on the motor fixing frame, and finally fixed with a set screw.

[0049] In order to enhance the magnetic field effect, all the first magnets 212 and the second magnets 213 are arranged on the side away from the rotor assembly on the magnet fixing disk 211 closest to the rotor assembly, and a second magnet 213 is arranged at the origin of the magnet fixing disk 211. The specific material for preparing the magnets is not limited. In this embodiment, the first magnets 212 and the second magnets 213 are made of rare earth neodymium iron boron permanent magnets to form a permanent strong magnetic field.

[0050] On the basis of the above structure, the rotor assembly further includes two sets of bearings 33, which are respectively arranged at both ends of the rotor mounting shaft 32. The bearings 33 can be made of stainless steel 304, which is low in cost and easy to process. In this embodiment, the bearings 33 are made of ceramics, which are wear-resistant and corrosion-resistant, and temperature changes do not affect product performance, and can operate continuously and stably. The specific ceramic material is not limited, and is preferably zirconia ceramics, which has better wear resistance.

[0051] During installation, the bearing 33 is installed on the inner wall of the housing 1 by a press, and a sealing ring (O-ring) is installed; then the whole structure is connected to the rotor mounting shaft 32, and the inner rotor sleeve and the rotor mounting shaft 32 are fixed together by a press, and then assembled with the impeller 4 and other parts. The partition with the sealing ring is installed above the impeller 4 and the rotor 31, and the stator assembly 2 is installed above the partition. Finally, the motor back cover is covered on the top of the housing 1 and fixed with bolts. In order to ensure that the impeller 4 rotates more smoothly, a gasket is installed on the impeller 4 to prevent excessive wear of the impeller 4.

[0052] In this embodiment, the fluid generator further includes a voltage and current stabilizing circuit board 5 and a control device. The voltage and current stabilizing circuit board 5 includes a three-phase rectifier bridge and a charging rectifier module that are isolated from each other. During installation, the three-phase rectifier bridge is mounted on the fixed disk of the motor using flat-head hexagon socket screws, and the charging rectifier module is mounted on the four copper pillars of the motor fixed disk using flat-head hexagon socket screws. In order to improve the rectification effect, the three-phase rectifier bridge does not contact the fixed disk, and the charging rectifier module does not contact the three-phase rectifier bridge.

[0053] In this embodiment, the control device can be a centralized or distributed controller. For example, the controller can be a single single-chip microcomputer or a distributed plurality of single-chip microcomputers. The control program can be run in the single-chip microcomputer to control the voltage and current stabilizing circuit board 5 and other devices to realize their functions.

[0054] On the basis of the above structure, a filter is installed on the liquid inlet pipe 13, and the filter is used to filter out impurities in the fluid entering the impeller rotor cavity 11, to prevent the impurities from hitting the impeller 4, and to extend the service life of the impeller 4. The specific installation position of the filter on the liquid inlet pipe 13 is not limited. In this embodiment, the filter is installed at the front end of the liquid inlet pipe 13, which makes the filtration more thorough and facilitates the disassembly, cleaning and maintenance of the filter.

[0055] In order to improve the working stability, a differential pressure control valve (or pressure differential control valve) is installed at the rear end of the fluid generator (i.e., on the liquid outlet pipe), which can automatically adjust the opening according to the pressure of the fluid in the pipeline to ensure the flow rate and temperature of the fluid in the pipeline, thereby ensuring the stable rotation speed of the impeller 4 and the stable power generation.

[0056] On the basis of the above structure, the specific material of the shell 1 of the fluid generator is not limited. In this embodiment, stainless steel 304 is used, which has high strength and is easy to bend and cut; the impeller 4 is also made of stainless steel 304, which can withstand the impact of high-speed flowing fluids such as aviation kerosene, water and air, and has a long service life; the motor coil is made of high-precision oxygen-free copper, with low resistance and low energy consumption; the sealing level between each structure reaches IP68.

[0057] The pressure resistance of the fluid generator reaches 40Bar, the minimum starting pressure difference is 0.2Bar, the maximum starting pressure difference is 3Bar, the output voltage is adjustable between 0.5V-30V, the output current is adjustable between 50mA-2A, and the maximum allowable output power is 35W; the output voltage is not affected by the pressure difference between the liquid inlet pipe 13 and the liquid outlet pipe, and constant voltage output is achieved; the output current is not affected by the increase of the pressure difference between the liquid inlet pipe 13 and the liquid outlet pipe, and the current output increases, so as to achieve constant current output.

[0058] The fluid generator is equipped with a short-circuit protection device, which is safer to use; it is equipped with an output backflow prevention structure, which can be directly used for battery charging. For ease of use, the fluid generator is equipped with indicator lights of different colors. The red indicator light corresponds to the constant voltage and constant current state, the blue indicator light corresponds to the charging state, and the green indicator light corresponds to whether the charging is completed.

[0059] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A fluid generator, characterized in that: include: A shell (1), the interior of which is divided into an impeller rotor chamber (11) and a stator chamber (12); a liquid inlet pipe (13) is provided on the shell (1), the liquid inlet pipe (13) is connected to the impeller rotor chamber (11), and a fluid for driving the fluid generator enters the impeller rotor chamber (11) through the liquid inlet pipe (13); A stator assembly (2) is arranged in the stator cavity (12), the stator assembly (2) comprising a stator (21) and a stator mounting shaft (22), the stator (21) being sleeved on the stator mounting shaft (22); A rotor assembly is arranged in an impeller rotor chamber (11), the rotor assembly comprising a fixedly connected rotor (31) and a rotor mounting shaft (32), the rotor (31) being magnetically coupled to the stator (21); and An impeller (4) is arranged in the impeller rotor cavity (11), and the impeller (4) is fixedly connected to the rotor assembly.

2. The fluid generator according to claim 1, characterized in that: The stator (21) comprises a magnet fixing disk (211), at least two first magnets (212) and at least two second magnets (213), wherein the first magnets (212) and the second magnets (213) are arranged at intervals and in a ring shape on the magnet fixing disk (211), and the N poles and S poles of the first magnets (212) and the second magnets (213) are arranged opposite to each other.

3. The fluid generator according to claim 2, characterized in that: One of the first magnet (212) and the second magnet (213) is mounted at an origin on one side of the magnet fixing disk (211), the first magnet (212) and the second magnet (213) are arranged at intervals, and all of the first magnet (212) and the second magnet (213) are arranged in a ring on one side of the magnet fixing disk (211); or, An annular structure formed by the first magnets (212) and the second magnets (213) being arranged at intervals is respectively provided on both sides of the magnet fixing disk (211); at any installation position on the magnet fixing disk (211), one of the first magnets (212) and the second magnets (213) is installed on one side of the magnet fixing disk (211), and the other of the first magnets (212) and the second magnets (213) is installed on the other side of the magnet fixing disk (211).

4. The fluid generator according to claim 3, characterized in that: The stator assembly (2) comprises a stator (21); or, The stator assembly (2) comprises at least two stators (21) arranged in sequence along the extension direction of the stator installation shaft (22), and all the stators (21) are sleeved on the stator installation shaft (22) in sequence.

5. The fluid generator according to claim 4, characterized in that: When the stator assembly (2) comprises four stators (21) arranged in sequence along the extension direction of the stator mounting axis (22), the magnet fixing disk (211) closest to and farthest from the rotor assembly is provided with a ring structure formed by the first magnet (212) and the second magnet (213) arranged at intervals on one side, and the remaining two magnet fixing disks (211) are provided with a ring structure formed by the first magnet (212) and the second magnet (213) arranged at intervals on both sides.

6. The fluid generator according to claim 5, characterized in that: On the magnet fixing disk (211) closest to the rotor assembly, all of the first magnets (212) and the second magnets (213) are arranged on a surface away from the rotor assembly, and one second magnet (213) is arranged at the origin of the magnet fixing disk (211).

7. The fluid generator according to claim 2, characterized in that: The first magnet (212) and / or the second magnet (213) are made of rare earth neodymium iron boron permanent magnets.

8. The fluid generator according to any one of claims 1 to 7, characterized in that: The rotor assembly further comprises two groups of bearings (33), the two groups of bearings (33) are respectively arranged at two ends of the rotor mounting shaft (32), and the bearings (33) are made of ceramics.

9. The fluid generator according to any one of claims 1 to 7, characterized in that: The fluid generator further comprises a voltage and current stabilizing circuit board (5), and the voltage and current stabilizing circuit board (5) comprises a three-phase rectifier bridge and a charging rectifier module which are isolated from each other.

10. The fluid generator according to any one of claims 1 to 7, characterized in that: A filter is installed on the liquid inlet pipe (13), and the filter is used to filter the fluid entering the impeller rotor chamber (11).

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