CN211236449U - Electric magnetic shaftless wavelength conversion device - Google Patents
Electric magnetic shaftless wavelength conversion device Download PDFInfo
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- CN211236449U CN211236449U CN201922409378.8U CN201922409378U CN211236449U CN 211236449 U CN211236449 U CN 211236449U CN 201922409378 U CN201922409378 U CN 201922409378U CN 211236449 U CN211236449 U CN 211236449U
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Abstract
The utility model provides an electric magnetic force shaftless wavelength conversion device, which comprises a shell, and a stator, a rotor and a wavelength conversion body which are arranged in the same axial direction with the shell, wherein the shell is in a ring shape made of high-strength materials, a hollow ring is arranged in the shell, a plurality of clamping grooves are arranged in the shell, the stator and a plurality of Hall sensors are used for fixedly mounting an annular motor, and the Hall sensors are symmetrically distributed along the center of the shell and are used for detecting the motion state of the rotor; two ends of the rotor are arranged on the shell through bearings; the wavelength conversion body is arranged close to the inner side of the rotor, and the outer wall of the wavelength conversion body is provided with a fixing component connected with the rotor and rotates along with the rotor. Compared with the prior art, the utility model discloses compact structure, space, energy utilization are high, the accurate control wavelength conversion body's of being convenient for rotation angle again, the problem that effectual solution background art provided.
Description
Technical Field
The utility model relates to a laser light source technical field especially relates to an electronic magnetic force does not have axle wavelength conversion equipment.
Background
The fluorescent light is obtained by coating fluorescent powder on the wavelength conversion device, and irradiating the fluorescent powder with an excitation light beam to excite the fluorescent powder to generate fluorescent light with corresponding colors. At present, the mainstream wavelength conversion device is a fluorescent wheel, the fluorescent wheel is composed of fluorescent powder and a rotating disc, and the problem that the temperature of the fluorescent wheel is increased to cause the reduction of the optical efficiency of the fluorescent powder due to the temperature increase caused by the fact that high-energy excitation light beams are concentrated on the same fluorescent point for irradiation is avoided. The motor drives the rotary turntable to make the light receiving area of the fluorescent powder coated on the rotary turntable continuously change and reduce the working temperature of the fluorescent powder. For example, blue laser light is used to excite green and red phosphors to generate three primary colors, wherein the green and red phosphors are coated on a rotating wavelength conversion device, usually in a fluorescent wheel structure, and the three primary colors are sequentially output by rotation. Therefore, in the technical scheme that the existing motor output shaft drives the fluorescent wheel to rotate, the motor, the rotating shaft and the fluorescent wheel are indispensable components.
With the demand of people for high-brightness light sources, excitation light beams with higher energy need to be used for exciting the fluorescent wheel, and the diameter of the fluorescent wheel needs to be increased for continuous heat diffusion. The fluorescent wheel with larger diameter can be driven to rotate at high speed only by increasing the power of the motor, inevitably, the vibration aggravation stability of the system is poor, and the noise is increased. The volume of the wavelength conversion device is increased, and the utilization rate of the limited space of the illumination light path is reduced. Due to the presence of the rotating shaft, losses increase during energy transfer and transfer efficiency decreases. Therefore, the prior art gradually shows its disadvantages, cannot better satisfy the working requirements, and needs a device to solve the problem of unstable dynamic balance of the wavelength conversion device during high-speed rotation when high brightness is required.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art scheme, the utility model provides a no axle wavelength conversion equipment of electronic magnetic force of low noise high stability, compact structure, space, energy utilization are high, the accurate control wavelength conversion body's of being convenient for rotation angle again, the problem that effectual solution background art provided.
The utility model provides a technical scheme that its technical problem adopted is: an electric magnetic shaftless wavelength conversion device comprises a shell, and a stator, a rotor and a wavelength conversion body which are coaxially arranged with the shell, wherein the shell is in a ring shape and made of high-strength materials, a hollow ring is arranged in the shell, a plurality of clamping grooves are formed in the shell, the stator of an annular motor and a plurality of Hall sensors are fixedly arranged in the hollow ring, and the Hall sensors are symmetrically distributed along the center of the shell and used for detecting the motion state of the rotor; two ends of the rotor are arranged on the shell through bearings; the wavelength conversion body is arranged close to the inner side of the rotor, and the outer wall of the wavelength conversion body is provided with a fixing component connected with the rotor and rotates along with the rotor; the area of the inner circle of the wavelength conversion body close to the center of the rotor is small, the area of the outer circle of the wavelength conversion body far away from the center of the rotor is large, and the inner circle of the rotor is connected with the outer circle of the wavelength conversion body.
Furthermore, the stator is composed of a plurality of stator windings, the stator windings comprise a ring-type iron core and a coil which are composed of silicon steel sheets, and the stator windings are fixed in the clamping grooves, so that the stator windings are connected into a ring shape and are concentric with the shell; the stator winding and the Hall sensor are communicated with the outside through a cable and a wiring port on the shell.
The rotor comprises an annular rotor body and a permanent magnet, a plurality of grooves are formed in the outer wall of the annular rotor body, and the permanent magnet is embedded in the grooves in a welding, threaded or gluing mode to form a permanent magnet ring on the annular rotor body; the permanent magnet is sealed and isolated from the external environment and corresponds to a stator winding in the stator.
The outer contour of the wavelength conversion body is circular, the wavelength conversion body comprises a wavelength conversion material support body and a wavelength conversion material layer, and the wavelength conversion material layer is attached to the wavelength conversion material support body; the wavelength conversion material support body is an object with various shapes, which can support the wavelength conversion material layer, can be embedded into the inner ring of the annular rotor and can rotate together with the rotor; the wavelength conversion material layer is composed of one or more wavelength conversion materials attached to a wavelength conversion material support, but at least includes a wavelength conversion material capable of generating light of a new wavelength upon excitation of an excitation light source.
The distribution of the wavelength conversion material on the wavelength conversion support may be fan-shaped, circular, irregular.
The inner ring side of the shell and the outer ring side of the rotor are provided with trapezoidal grooves for mounting bearings, and the rotor is mounted on the shell through the bearings, so that a buffer gap with the width of about 3mm is formed between the stator and the rotor.
The air current can directly get into in the buffering clearance the utility model discloses inside, take away the heat in the system, play the effect of cooling entire system.
The utility model has the advantages that: the conventional thinking mode of the wavelength conversion device is broken through, the stator, the rotor and the wavelength conversion device of the traditional motor are redesigned, a middle motor and an output shaft part thereof in the traditional fluorescent wheel device are removed, the radial length of the wavelength conversion device is reduced, the structure becomes flat, the middle part is a hollow structure, and the transmission mode of an optical path is diversified; the motor rotor and the wavelength conversion body are integrated, the dynamic balance correction requirement is low, the torque is large, the torque inertia is small, the vibration and noise are small, the energy utilization rate is high, and meanwhile, the rotation angle of the wavelength conversion body can be accurately controlled; the whole wavelength conversion device adopts a modularized design, the size and the volume of the wavelength conversion device can be designed according to the requirement of the light path of the excitation light source, the structure is compact, and the installation and the maintenance are easy. In addition, through the direct contact with the air, the radiating effect is better.
Drawings
The structure and features of the present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic right-side sectional view of fig. 1.
Fig. 3 is a schematic structural diagram of the wavelength converter according to the present invention.
In fig. 1-3, 1 is a housing, 2 is a stator, 3 is a rotor, 4 is a wavelength conversion body, 6 is a bearing, 7 is a hall sensor, 21 is a stator winding, 22 is a stator slot, 23 is an annular wall, 24 is a buffer gap between the stator and the rotor, 31 is an annular rotor body, 32 is a permanent magnet, 33 is a trapezoidal groove, 34 is a rotor center, 41 is a fluorescent material support, 42 is a fluorescent material layer, 42a is a first wavelength conversion substance, 42b is a second wavelength conversion substance, and 42c is a third wavelength conversion substance.
Detailed Description
Fig. 1-3 show an embodiment of the present invention, which discloses an electric magnetic shaftless wavelength conversion device, which is an integrated electric magnetic wavelength conversion device composed of a coreless permanent magnet motor and a wavelength converter, and comprises a housing 1, a stator 2, a rotor 3 and a wavelength converter 4.
In this example, the housing 1, which is located at the outermost periphery of the entire system, is a circular ring made of a high-strength material; a hollow circular ring is arranged in the shell, a plurality of clamping grooves 22 are formed in the shell, and the clamping grooves are used for fixedly mounting the annular motor stator 2 and the plurality of Hall sensors 5; the stator 2 is composed of a plurality of stator windings 21, the stator windings 21 are placed in stator clamping grooves 22 in the shell, and then a curable material is filled in the curable material and cured, so that the stator windings are accurately positioned in the annular shell 1, and the stator windings 21 are connected into a ring shape and are concentric with the annular shell 1; on the side of the stator winding 21 facing the rotor 3, it is closed by an annular wall 23 made of a material that does not negatively affect the magnetic field, which provides a reliable protection of the stator winding 21 from external influences; the hall sensors 5 are also fixed inside the housing 1, are distributed symmetrically relative to the center of the housing 1, and are used for detecting the motion state of the rotor 3.
In this example, the stator winding 21 includes a ring-shaped iron core and a coil, the ring-shaped iron core is made of a plurality of groups of silicon steel sheets through laminating and axial stamping, a plurality of teeth and grooves are arranged on the inner circle of the ring-shaped iron core, the coil is uniformly and densely wound in the groove on the ring-shaped iron core to form a single winding, and the stator 2 is formed by connecting a plurality of such windings 21 in series on the inner annular wall of the housing 1.
In this example, the rotor 3, located in the inner ring of the housing 1 and the stator 2, comprises an annular rotor body 31, permanent magnets 32 located in the rotor body; the rotor 3 is made of high-strength materials and is molded into a ring shape in an injection mode, the left side and the right side of the excircle of the rotor are stepped 33, a groove cavity in which permanent magnets 32 can be embedded is reserved on the outer wall of the periphery of an annular rotor body 31, a plurality of pairs of permanent magnets 32 are alternately embedded in the groove cavity on the rotor body 31 in an N pole and an S pole in a welding, threaded or gluing mode to form a permanent magnet ring, the permanent magnet ring is formed by arranging a plurality of square permanent magnets 32, the polarities of adjacent permanent magnets are opposite and are alternately arranged; the square permanent magnet is a strong magnet made of special materials, and the front view and the rear view of the square permanent magnet are isosceles trapezoids; the permanent magnets 32 in the rotor body 31 are opposite the stator windings 21 in the stator 2 and the permanent magnets 32 are sealed from the environment.
In this example, the wavelength conversion body 4 is fixedly installed inside the annular rotor 3, and the wavelength conversion body 4 and the rotor 3 form an integrated structure by means of casting, welding, screwing or gluing; the area of the inner circle of the wavelength conversion body 4 close to the center 34 of the rotor is small, the area of the outer circle of the wavelength conversion body far away from the center of the rotor is large, and the inner circle of the rotor is connected with the outer circle of the wavelength conversion body; in order to cooperate with excitation light sources with different wavelengths to excite the wavelength conversion bodies 4 containing different wavelength conversion materials to generate light with different wavelengths, the wavelength conversion bodies 4 containing suitable wavelength conversion materials are selected according to the excitation light sources with different wavelengths; the wavelength converting body 4 is detachably attached to the inner ring of the ring rotor 3, so that the wavelength converting body can be replaced relatively easily.
In this example, the wavelength converting body 4 includes a wavelength converting material support 41 and a wavelength converting material layer 42, the wavelength converting material layer 42 being attached on the wavelength converting material support 41; the wavelength converter 4 is divided into a reflective wavelength converter and a transmissive wavelength converter according to the requirement of an optical path, and is mainly a transmissive support or a reflective support according to the wavelength conversion material support 41 constituting the wavelength converter 4; the transmission type wavelength conversion body is formed by coating a wavelength conversion material on a wavelength conversion support made of a transparent material and can transmit exciting light to excite a light source; the wavelength conversion material support in the reflective wavelength converter may be a metal sheet or other material with high thermal conductivity, or may be stainless steel, aluminum, copper, or ceramic, graphite, but not limited thereto; the outer contour of the wavelength conversion body is convenient to contact and fix with the annular rotor body; the outer contour of the wavelength conversion body is circular ring-shaped, and the inner contour and the thickness of the wavelength conversion body are not limited.
In the present example, the wavelength converting material support 41 is an object of various shapes that can support the wavelength converting material layer 41 and can be embedded in the inner ring of the annular rotor 3 and rotate together with the rotor 3. The shape of the material is not particularly limited, but includes, but is not limited to, a fan shape, a circular shape, a ring shape, a cone shape, a disk shape, a dome shape, a truncated cone shape, a folded ring shape, and the like, and variations of the above shapes. Such as a hollowed out circle, a donut with internal serrations, or a fan blade, etc.
In this example, the wavelength converting material layer on the wavelength converting body is composed of one or more wavelength converting materials attached to a wavelength converting material support, but includes at least one wavelength converting material that is capable of generating light of a new wavelength upon excitation by an excitation light source. The wavelength conversion material is formed by mixing and curing or fixing inorganic materials and/or organic materials. Wavelength converting materials include, but are not limited to, phosphors, nanomaterials, and other materials that are excited to produce a new wavelength. The attachment means may be adhesive, spray or other means, and the wavelength conversion material may also be sandwiched.
In this example, the distribution of the wavelength converting material on the wavelength converting support may be fan-shaped, circular, irregular. The specific wavelength conversion material type and distribution shape on the wavelength conversion support are related to the type of wavelength of the excitation light source used and the type of new wavelength generated after excitation. Specific example referring to fig. 3, a wavelength conversion body, the wavelength conversion material includes a first wavelength conversion substance 42a, a second wavelength conversion substance 42b, and a third wavelength conversion substance 42 c. The embodiments of the present invention are merely illustrative of the arrangement of the wavelength conversion material layer on the wavelength conversion support.
In this example, the left and right sides of the outer ring of the rotor 3 and the left and right sides of the inner ring of the housing 1 are trapezoidal grooves 33 for mounting and positioning the bearings 6, and the rotor 2 is mounted on the housing 1 through the pair of bearings 6; when the outer ring of the rotor is aligned with the inner ring of the shell, the magnetic force of the permanent magnet ring enables the rotor to be absorbed into the inner circle of the stator, the annular bearing 6 supports the rotor 3 and the stator 2 to be accurately positioned, the permanent magnet 32 of the annular rotor body corresponds to the stator winding 21, and an even annular magnetic gap 24 is reserved between the rotor and the stator. Thus, the system becomes an integral whole. The bearing of the device can be a magnetic bearing, and is not detailed here.
In this device, there is no sealing means between the rotor 3 and the stator 2, and a buffer gap 24 having a width of about 3mm is provided between the stator 2 and the rotor 3 by the support of the bearing 6. The airflow can directly enter the device to take away the heat in the system, thereby playing a role in cooling the whole system; inside the stator, heat dissipation holes (not shown) may be disposed between adjacent individual windings 21, the heat dissipation holes being distributed on the inner wall of the housing 1 along the axial direction of the housing 1, the heat dissipation holes distributed along the axial direction of the housing 1 facilitating the flow of air, thereby achieving an air cooling effect.
In the present apparatus, the sensor 5 is required to detect the rotation angle of the wavelength conversion body in real time. After the wavelength conversion body 4 is fixed on the rotor 3, the rotation angle of the rotor 3 is detected, and the rotation angle of the wavelength conversion body 4 can be known. For the shaftless electrodynamic-magnetic rotation, it is also necessary to detect the rotation angle of the rotor 3 with a sensor to realize the periodic control of the current of the stator winding 21. Preferably, a hall sensor 5 for detecting the permanent magnet 32 is fixed inside the housing. The stator winding 21 and the lead wire or cable of the hall sensor 5 are combined into a strand of output cable nearby, and the output cable is led out from a wiring port (not shown) on the shell and is connected and communicated with the outside. Preferably, the outer surfaces of the winding coil 21 and the hall sensor 5 are coated with anti-corrosion and anti-leakage coatings.
The utility model discloses a concrete theory of operation: when the winding coil 21 on the stator 2 is electrified, a magnetic field is generated, the permanent magnet 31 is fixed on the surface of the annular rotor 3, the rotor 3 generates an induced current due to cutting magnetic lines, the induced current generates a counter-induction magnetic field, so that a rotating torque is generated, the rotor 3 rotates, and the rotation of the wavelength conversion body 4 is driven by the rotation of the rotor 3 to realize the rotation of the wavelength conversion body. The excitation light beam irradiates and excites the wavelength converting material of the wavelength converting body to generate light of a corresponding new wavelength.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above is only a preferred embodiment of the present invention, and the scope of the right of the present invention should not be limited by this, so that the equivalent changes made in the claims of the present invention still belong to the protection scope of the present invention.
Claims (6)
1. An electrodynamic magnetic shaftless wavelength conversion device is characterized in that: the device comprises a shell, and a stator, a rotor and a wavelength conversion body which are coaxially arranged with the shell, wherein the shell is in a ring shape and made of high-strength materials, a hollow ring is arranged in the shell, a plurality of clamping grooves are formed in the shell, the stator of the ring-shaped motor and a plurality of Hall sensors are used for fixedly mounting the stator of the ring-shaped motor, and the Hall sensors are symmetrically distributed along the center of the shell and are used for detecting the motion state of the rotor; two ends of the rotor are arranged on the shell through bearings; the wavelength conversion body is arranged close to the inner side of the rotor, and the outer wall of the wavelength conversion body is provided with a fixing component connected with the rotor and rotates along with the rotor; the area of the inner circle of the wavelength conversion body close to the center of the rotor is small, the area of the outer circle of the wavelength conversion body far away from the center of the rotor is large, and the inner circle of the rotor is connected with the outer circle of the wavelength conversion body.
2. The electrodynamic magnetic shaftless wavelength conversion device of claim 1, wherein: the stator is composed of a plurality of stator windings, the stator windings comprise a ring-type iron core and a coil, the ring-type iron core and the coil are composed of silicon steel sheets, and the stator windings are fixed in the clamping grooves, so that the stator windings are connected into a ring shape and are concentric with the shell; the stator winding and the Hall sensor are communicated with the outside through a cable and a wiring port on the shell.
3. The electrodynamic magnetic shaftless wavelength conversion device of claim 1, wherein: the rotor comprises an annular rotor body and a permanent magnet, a plurality of grooves are formed in the outer wall of the annular rotor body, and the permanent magnet is embedded in the grooves in a welding, threaded or gluing mode to form a permanent magnet ring on the annular rotor body; the permanent magnet is sealed and isolated from the external environment and corresponds to a stator winding in the stator.
4. The electrodynamic magnetic shaftless wavelength conversion device of claim 1, wherein: the outer contour of the wavelength conversion body is circular, the wavelength conversion body comprises a wavelength conversion material support body and a wavelength conversion material layer, and the wavelength conversion material layer is attached to the wavelength conversion material support body; the wavelength conversion material support body is an object with various shapes, which can support the wavelength conversion material layer, can be embedded into the inner ring of the annular rotor and can rotate together with the rotor; the wavelength conversion material layer is composed of one or more wavelength conversion materials attached to a wavelength conversion material support, but at least includes a wavelength conversion material capable of generating light of a new wavelength upon excitation of an excitation light source.
5. The electrodynamic magnetic shaftless wavelength conversion device of claim 1, wherein: the distribution of the wavelength conversion material on the wavelength conversion support may be fan-shaped, circular, irregular.
6. The electrodynamic magnetic shaftless wavelength conversion device of claim 1, wherein: the inner ring side of the shell and the outer ring side of the rotor are provided with trapezoidal grooves for mounting bearings, and the rotor is mounted on the shell through the bearings, so that a buffer gap with the width of about 3mm is formed between the stator and the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922409378.8U CN211236449U (en) | 2019-12-28 | 2019-12-28 | Electric magnetic shaftless wavelength conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922409378.8U CN211236449U (en) | 2019-12-28 | 2019-12-28 | Electric magnetic shaftless wavelength conversion device |
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| Publication Number | Publication Date |
|---|---|
| CN211236449U true CN211236449U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922409378.8U Active CN211236449U (en) | 2019-12-28 | 2019-12-28 | Electric magnetic shaftless wavelength conversion device |
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| CN (1) | CN211236449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2624364A (en) * | 2022-09-22 | 2024-05-22 | Wilson Benesch Ltd | A motor for a turntable and associated methods |
-
2019
- 2019-12-28 CN CN201922409378.8U patent/CN211236449U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2624364A (en) * | 2022-09-22 | 2024-05-22 | Wilson Benesch Ltd | A motor for a turntable and associated methods |
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