CN109559731B - Magnetostriction noise reduction assembly - Google Patents
Magnetostriction noise reduction assembly Download PDFInfo
- Publication number
- CN109559731B CN109559731B CN201710876261.3A CN201710876261A CN109559731B CN 109559731 B CN109559731 B CN 109559731B CN 201710876261 A CN201710876261 A CN 201710876261A CN 109559731 B CN109559731 B CN 109559731B
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- alternating magnetic
- magnetostrictive
- noise
- fixed bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000009467 reduction Effects 0.000 title abstract description 46
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000001939 inductive effect Effects 0.000 claims abstract description 3
- 230000006698 induction Effects 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000007747 plating Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 13
- 238000003466 welding Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
The invention discloses a magnetostriction noise reduction assembly, comprising: the fixing support is provided with an installation part; the alternating magnetic field generating piece is arranged on the fixed bracket and is suitable for generating an alternating magnetic field; and the magnetostrictive sheet is arranged on the fixed bracket and is suitable for inducing the magnetic field generated by the alternating magnetic field generating piece to generate sound waves and counteract noise sound waves. The magnetostriction noise reduction assembly is used for reducing noise of household appliances in an active noise reduction mode, and the noise reduction effect is obvious.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a magnetostrictive noise reduction assembly.
Background
The household appliance brings convenience to daily life and simultaneously generates noise which can cause various damages to human bodies. However, the noise reduction mode of the household appliance is mainly passive noise reduction, and the noise reduction effect of the mode is not obvious.
Accordingly, there is a need for an improved means of noise reduction for household appliances.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, it is an object of the present invention to propose a magnetostrictive noise reducing assembly. The magnetostriction noise reduction assembly is used for reducing noise of household appliances in an active noise reduction mode, and the noise reduction effect is obvious.
In one aspect of the invention, a magnetostrictive noise reduction assembly is provided. According to an embodiment of the invention, the magnetostrictive noise reducing assembly comprises: the fixing support is provided with an installation part; the alternating magnetic field generating piece is arranged on the fixed bracket and is suitable for generating an alternating magnetic field; and the magnetostrictive sheet is arranged on the fixed bracket and is suitable for inducing the magnetic field generated by the alternating magnetic field generating piece to generate sound waves and counteract noise sound waves.
According to the embodiment of the invention, the magnetostrictive noise reduction assembly generates a magnetic field according to the internal and external noise conditions of the household appliance by utilizing the alternating magnetic field generating piece, and the magnetostrictive sheet generates sound waves with the same frequency and opposite phases with the noise according to the magnetic field generated by the alternating magnetic field generating piece, so that the noise sound waves are counteracted, and the purpose of actively reducing noise is achieved. The magnetostrictive noise reduction assembly is used for reducing noise of household appliances, has obvious noise reduction effect, does not generate mechanical fatigue in vibration of the magnetostrictive sheet compared with the traditional metal vibrating piece, and does not need to provide an excessive vibration space.
In addition, the magnetostrictive noise reduction assembly according to the above embodiment of the invention may have the following additional technical features:
in some embodiments of the invention, the alternating magnetic field generator is adapted to generate a randomly varying alternating magnetic field.
In some embodiments of the invention, the magnetostrictive noise reducing assembly further comprises: the noise sound wave collecting device is suitable for controlling the alternating magnetic field generating piece to generate a corresponding alternating magnetic field according to the collected noise sound wave.
In some embodiments of the invention, the magnetostrictive sheet is disposed opposite the alternating magnetic field generating member and is located on the same side or opposite sides of the fixed bracket. Therefore, the frequency of sound waves generated by the magnetostrictive sheet and vibrating rapidly can be further improved, and the noise reduction effect is improved.
In some embodiments of the invention, the alternating magnetic field generating member is one selected from the group consisting of an electric coil, an electromagnetic generating member, and an IH coil disk. Thus, the applicability of the magnetostrictive noise reduction assembly can be further improved.
In some embodiments of the present invention, the alternating magnetic field generating element is a magnetic induction coating, and the magnetic induction coating is formed on one surface of the fixing bracket, so that the alternating magnetic field generating element and the fixing bracket are combined together, and the integrity and the stability of the magnetostrictive noise reduction assembly are improved.
In some embodiments of the invention, the magnetostrictive tab is snapped or plug-connected with the fixed bracket. Therefore, the magnetostrictive sheet is more convenient to detach or replace, and meanwhile, the magnetostrictive sheet can be conveniently cleaned, and the cleaning efficiency of the magnetostrictive noise reduction assembly is improved.
In some embodiments of the invention, the magnetostrictive sheet is parallel to the surface of the fixed bracket and is at a distance of 0.5-3 mm from the fixed bracket surface. Therefore, the magnetostrictive sheet is more firmly installed, and the influence on the frequency of sound waves caused by the fact that the magnetostrictive sheet collides with the fixed support when vibrating under the action of a magnetic field is avoided, and the noise reduction effect is influenced.
In some embodiments of the invention, the magnetic induction coating has a thickness of 0.2 to 2.0mm. Whereby a sufficient magnetic field can be generated.
In some embodiments of the invention, the thickness of the fixing support is 1.0-3.5 mm. Thereby can be further improved
In some embodiments of the invention, the mounting portion is formed at a top end and/or a bottom end of the fixed bracket. Thereby, the mountability of the magnetostrictive noise reduction assembly can be further improved.
In some embodiments of the invention, the mounting portion comprises: the hook is formed at the top end of the fixed bracket; and the base is formed at the bottom end of the fixed support. Therefore, the stability of the magnetostrictive noise reduction assembly after being installed can be further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a side cross-sectional view of a magnetostrictive noise reducing assembly according to one embodiment of the invention;
FIG. 2 is a top cross-sectional view of a magnetostrictive noise reducing assembly according to one embodiment of the invention;
FIG. 3 is an anatomic view of a magnetostrictive noise reducing assembly according to yet another embodiment of the invention;
FIG. 4 is a rear view of a magnetostrictive noise reducing assembly according to yet another embodiment of the invention;
FIG. 5 is a side view of a magnetostrictive noise reducing assembly according to yet another embodiment of the invention;
FIG. 6 is a front view of a magnetostrictive noise reducing assembly according to yet another embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In one aspect of the invention, a magnetostrictive noise reduction assembly is provided. 1-6, the magnetostrictive noise reducing assembly includes: a fixed bracket 100, an alternating magnetic field generating member 200, and a magnetostrictive sheet 300. Wherein, the fixing bracket 100 is provided with an installation part; the alternating magnetic field generating member 200 is disposed on the fixed bracket 100, and the alternating magnetic field generating member 200 is adapted to generate an alternating magnetic field; the magnetostrictive sheet 300 is disposed on the fixed bracket 100 and is adapted to induce a magnetic field generated by the alternating magnetic field generating member 200 to generate sound waves and cancel noise sound waves.
According to the embodiment of the invention, the magnetostrictive noise reduction assembly generates a magnetic field according to the internal and external noise conditions of the household appliance by utilizing the alternating magnetic field generating piece, and the magnetostrictive sheet generates sound waves with the same frequency and opposite phases with the noise according to the magnetic field generated by the alternating magnetic field generating piece, so that the noise sound waves are counteracted, and the purpose of actively reducing noise is achieved. The magnetostrictive noise reduction assembly is used for reducing noise of household appliances, has obvious noise reduction effect, does not generate mechanical fatigue in vibration of the magnetostrictive sheet compared with the traditional metal vibrating piece, and does not need to provide an excessive vibration space.
A magnetostrictive noise reduction assembly according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 6:
according to an embodiment of the present invention, the fixing bracket 100 has a mounting portion thereon. According to an embodiment of the present invention, the mounting portion may be formed at the top and/or bottom end of the fixing bracket 100. Thereby further improving the mountability of the magnetostrictive noise reducing assembly. In particular, the magnetostrictive noise reducing assembly may be adapted to be installed on any device requiring noise reduction, or in any environment requiring noise reduction, and may thereby eliminate or cancel noise generated by the device or noise present in the environment.
According to an embodiment of the present invention, the mounting portion may include a hook 110 and a base 120. Wherein, the hook 110 is formed at the top end of the fixing bracket 100; the base 120 is formed at the bottom end of the fixing bracket 100, and double-sided tape may be provided on the hook 110 and the base 120 to fix.
According to an embodiment of the present invention, the thickness of the fixing bracket may be 1.0 to 3.5mm. Thereby providing a stable matrix for the magnetostrictive noise reducing assembly while improving the quality of the magnetostrictive noise reducing assembly.
According to an embodiment of the present invention, the alternating magnetic field generating member 200 is provided on the fixed bracket 100, and the alternating magnetic field generating member 200 is adapted to generate a magnetic field. According to an embodiment of the present invention, the alternating magnetic field generating element is connected to an external controller (not shown in the drawings), and the external controller can detect and analyze noise parameters inside and outside the electrical appliance or inside the environment, and after analyzing and triggering the alternating magnetic field generating element 200, the alternating magnetic field generating element 200 generates a changing magnetic field, and after receiving the changing magnetic field, the magnetostrictive sheet 300 generates vibration with the same frequency spectrum and opposite phase to the noise so as to offset the noise, thereby achieving the effect of active noise reduction.
According to a specific embodiment of the invention, the alternating magnetic field generating member is adapted to generate a randomly varying alternating magnetic field.
According to an embodiment of the present invention, the magnetostrictive noise reducing assembly of the present invention may further comprise: noise sound wave collection system. The noise sound wave acquisition device can be connected with the alternating magnetic field generation piece and is suitable for controlling the alternating magnetic field generation piece to generate a corresponding alternating magnetic field according to the acquired noise sound wave. And the magnetostriction sheet can generate vibration with the same frequency spectrum and opposite phase to the noise sound wave after receiving the alternating magnetic field so as to counteract noise and achieve the effect of active noise reduction.
According to a specific embodiment of the present invention, the alternating magnetic field generating member may be one selected from the group consisting of an electric coil, an electromagnetic generating member, and an IH coil disk. Thus, the applicability of the magnetostrictive noise reduction assembly can be further improved.
According to an embodiment of the present invention, as shown in fig. 3 and 4, the alternating magnetic field generating member may be a magnetic induction coating, and the magnetic induction coating may be formed on one surface of the fixing bracket, so that the alternating magnetic field generating member and the fixing bracket are combined together, thereby improving the integrity and stability of the magnetostrictive noise reduction assembly.
According to an embodiment of the present invention, the thickness of the magnetic induction plating layer may be 0.2 to 2.0mm. Whereby a sufficient magnetic field can be generated.
According to an embodiment of the present invention, as shown in fig. 3 and 4, the magnetic induction coating has a pole welding point 210 and a negative pole welding point 220, and the pole welding point 210 and the negative pole welding point 220 can be connected with an external controller through an electric wire 230, when in operation, the external controller analyzes and analyzes noise parameters inside and outside the equipment or noise parameters in the environment by detecting and analyzing the noise parameters inside and outside the equipment, and sends corresponding magnetic fields to the magnetic induction coating on the fixed bracket, and after receiving the changed magnetic fields, the magnetostrictive sheet 300 fixed on the fixed bracket 100 generates sound waves with the same frequency spectrum and opposite phases so as to offset the noise, thereby achieving active noise reduction.
According to an embodiment of the present invention, the magnetostrictive sheet 300 is disposed on the fixed bracket 100 and is adapted to induce a magnetic field generated by the alternating magnetic field generating member 200 to generate sound waves and cancel noise sound waves. Specifically, the magnetostrictive sheet can deform according to the magnetic field generated by the alternating magnetic field generating piece, and sound waves with the same frequency and opposite phases with noise sound waves are generated through deformation, so that active noise reduction in household appliances or environments is realized.
According to an embodiment of the present invention, the acoustic wave generated by the magnetostrictive sheet 300 may be a random wave or any wave, as long as the frequency is different from that of the noise acoustic wave. Therefore, the effect of disturbing noise waves can be achieved, and the purpose of noise reduction is achieved.
Magnetostrictive sheet 300 may be snapped or plug-in connected to fixed bolster 100 according to an embodiment of the present invention. Thereby making the magnetostrictive sheet 300 more convenient to detach, replace and clean.
According to an embodiment of the present invention, the magnetostrictive sheet 300 may be fixed to the fixed bracket 100 by the snap 130, and as shown in fig. 2 and 3, the snap 130 is formed on the fixed bracket 100, the magnetostrictive sheet 300 is formed with the snap-fit engagement portion 310, and the magnetostrictive sheet 300 is engaged with the snap 130 by the engagement portion 310, and thus fixed to the fixed bracket 100. The fixing mode is simple and easy to detach, so that the magnetostrictive sheet 300 can be conveniently replaced, or the magnetostrictive noise reduction assembly can be cleaned.
According to an embodiment of the present invention, the magnetostrictive sheet 300 may be parallel to the surface of the fixed bracket 100 and spaced from the surface of the fixed bracket 100 by a distance of 0.5 to 3mm. Therefore, the magnetostrictive sheet 300 can be prevented from extruding and colliding with the fixed support during deformation, and further high-frequency vibration of the magnetostrictive sheet is influenced to generate sound waves, so that the noise reduction effect is influenced.
According to the embodiment of the invention, the magnetostrictive sheet 300 can be opposite to the alternating magnetic field generating member 200, so that the magnetostrictive sheet 300 and the alternating magnetic field generating member 200 can be opposite to each other, and the magnetostrictive sheet 300 can be always positioned in the region of the magnetic field generated by the alternating magnetic field generating member 200, so that the magnetostrictive sheet 300 can generate stronger magnetostrictive vibration, and further the sound wave generated by the magnetostrictive sheet 300 and generating rapid high-frequency vibration can be further improved, so that the noise reduction effect is improved.
According to an embodiment of the present invention, the magnetostrictive sheet 300 may be disposed on the same side or opposite sides of the fixed bracket 100 as the alternating magnetic field generating member 200. In particular, the same side or opposite sides can be selectively arranged according to the requirement.
According to the embodiment of the invention, the magnetostrictive noise reduction assembly generates a magnetic field according to the internal and external noise conditions of the household appliance by utilizing the alternating magnetic field generating piece, and the magnetostrictive sheet generates sound waves with the same frequency and opposite phases with the noise according to the magnetic field generated by the alternating magnetic field generating piece, so that the noise sound waves are counteracted, and the purpose of actively reducing noise is achieved. The magnetostrictive noise reduction assembly is used for reducing noise of household appliances, has obvious noise reduction effect, does not generate mechanical fatigue in vibration of the magnetostrictive sheet compared with the traditional metal vibrating piece, and does not need to provide an excessive vibration space.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (5)
1. A magnetostrictive noise reducing assembly, comprising:
the fixing support is provided with an installation part;
the alternating magnetic field generating piece is arranged on the fixed bracket and is suitable for generating an alternating magnetic field;
the magnetostrictive sheet is arranged on the fixed bracket and is suitable for inducing a magnetic field generated by the alternating magnetic field generating piece to generate sound waves and counteract noise sound waves;
the alternating magnetic field is a randomly-changed alternating magnetic field; further comprises: the noise sound wave acquisition device is suitable for controlling the alternating magnetic field generating piece to generate a corresponding alternating magnetic field according to the acquired noise sound wave;
the noise sound wave acquisition device is connected with the alternating magnetic field generating piece;
the magnetostriction piece is arranged opposite to the alternating magnetic field generating piece and is positioned on the same side or opposite sides of the fixed bracket;
the magnetostriction piece is clamped or spliced with the fixed bracket;
the magnetostrictive sheet is parallel to the surface of the fixed support, and the distance between the magnetostrictive sheet and the surface of the fixed support is 0.5-3 mm;
the mounting part is formed at the top end and/or the bottom end of the fixed bracket;
the mounting portion includes:
the hook is formed at the top end of the fixed bracket;
and the base is formed at the bottom end of the fixed support.
2. The magnetostrictive noise reducing assembly according to claim 1, wherein the alternating magnetic field generating member is one selected from the group consisting of an electric coil, an electromagnetic generating member, and an IH coil disk.
3. The magnetostrictive noise reducing assembly according to any of claims 1-2, wherein the alternating magnetic field generating member is a magnetic induction plating formed on one surface of the fixed bracket.
4. The magnetostrictive noise reducing assembly according to claim 3, wherein the magnetic induction coating has a thickness of 0.2-2.0 mm.
5. The magnetostrictive noise reducing assembly of claim 1, wherein the thickness of the fixed bracket is 1.0-3.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710876261.3A CN109559731B (en) | 2017-09-25 | 2017-09-25 | Magnetostriction noise reduction assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710876261.3A CN109559731B (en) | 2017-09-25 | 2017-09-25 | Magnetostriction noise reduction assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109559731A CN109559731A (en) | 2019-04-02 |
| CN109559731B true CN109559731B (en) | 2023-11-24 |
Family
ID=65862536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710876261.3A Active CN109559731B (en) | 2017-09-25 | 2017-09-25 | Magnetostriction noise reduction assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109559731B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2228778A (en) * | 1989-01-28 | 1990-09-05 | Continental Ag | A motor vehicle engine mounting |
| WO1995024171A1 (en) * | 1994-03-07 | 1995-09-14 | Noise Cancellation Technologies, Inc. | Integral device for active control of noise in ducts |
| JPH1140442A (en) * | 1997-07-17 | 1999-02-12 | Aichi Electric Co Ltd | Soundproof device for stationary induction electric equipment |
| CN102308117A (en) * | 2009-02-10 | 2012-01-04 | 西门子公司 | Damping system and method for eliminating torsion vibrations |
| TW201319403A (en) * | 2011-11-09 | 2013-05-16 | Asia Vital Components Co Ltd | Oil-retaining bearing fan device |
| CN203882608U (en) * | 2014-06-04 | 2014-10-15 | 上海兰宝环保科技有限公司 | A magnetic induced shrinkage or elongation noise eliminating apparatus |
| CN206178120U (en) * | 2016-08-29 | 2017-05-17 | 南京理工大学 | Reduce magnetism electric sensor sensing element of vibration noise |
| CN106710583A (en) * | 2016-12-27 | 2017-05-24 | 杭州老板电器股份有限公司 | Active-vibration control method for controlling noise of range hood |
| CN106807615A (en) * | 2017-01-18 | 2017-06-09 | 清华大学 | Magnetostriction longitudinal-torsional composite ultrasonic vibration transducer |
| CN107044505A (en) * | 2017-06-06 | 2017-08-15 | 哈尔滨工业大学 | Based on ultra-magnetic telescopic with quartzy cycloid Compound cooling mechanism every micro- vibrating device |
-
2017
- 2017-09-25 CN CN201710876261.3A patent/CN109559731B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2228778A (en) * | 1989-01-28 | 1990-09-05 | Continental Ag | A motor vehicle engine mounting |
| WO1995024171A1 (en) * | 1994-03-07 | 1995-09-14 | Noise Cancellation Technologies, Inc. | Integral device for active control of noise in ducts |
| JPH1140442A (en) * | 1997-07-17 | 1999-02-12 | Aichi Electric Co Ltd | Soundproof device for stationary induction electric equipment |
| CN102308117A (en) * | 2009-02-10 | 2012-01-04 | 西门子公司 | Damping system and method for eliminating torsion vibrations |
| TW201319403A (en) * | 2011-11-09 | 2013-05-16 | Asia Vital Components Co Ltd | Oil-retaining bearing fan device |
| CN203882608U (en) * | 2014-06-04 | 2014-10-15 | 上海兰宝环保科技有限公司 | A magnetic induced shrinkage or elongation noise eliminating apparatus |
| CN206178120U (en) * | 2016-08-29 | 2017-05-17 | 南京理工大学 | Reduce magnetism electric sensor sensing element of vibration noise |
| CN106710583A (en) * | 2016-12-27 | 2017-05-24 | 杭州老板电器股份有限公司 | Active-vibration control method for controlling noise of range hood |
| CN106807615A (en) * | 2017-01-18 | 2017-06-09 | 清华大学 | Magnetostriction longitudinal-torsional composite ultrasonic vibration transducer |
| CN107044505A (en) * | 2017-06-06 | 2017-08-15 | 哈尔滨工业大学 | Based on ultra-magnetic telescopic with quartzy cycloid Compound cooling mechanism every micro- vibrating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109559731A (en) | 2019-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2775785B1 (en) | Induction hob | |
| CN103036387A (en) | Linear vibration motor | |
| CN113727252A (en) | Application device | |
| CN218352728U (en) | Exciter and electronic device | |
| CN109559731B (en) | Magnetostriction noise reduction assembly | |
| CN212086477U (en) | Application device | |
| JP2003521184A (en) | Electroacoustic transducer having a moving coil and an elastic holding element for the connecting lead of the moving coil | |
| CN109549448B (en) | Cooking apparatus | |
| CN210202086U (en) | Bone conduction vibrator and bone conduction listening device | |
| CN112788503A (en) | Sound production device and electronic terminal | |
| CN205430017U (en) | Flat flat line nature vibrating motor | |
| CN210629893U (en) | Electromagnetic heating equipment | |
| CN210431944U (en) | Wave absorbing device and electromagnetic heating equipment | |
| CN210431943U (en) | Wave absorbing device and electromagnetic heating equipment | |
| CN109549453B (en) | Cooking apparatus | |
| CN109559730B (en) | Household appliance | |
| CN209415529U (en) | The shell and cooking appliance of cooking appliance | |
| JP4274132B2 (en) | rice cooker | |
| CN111478505A (en) | Motor vibration damping pad and range hood | |
| CN212969309U (en) | Motor vibration damper and household appliance | |
| CN109549455B (en) | Cooking container, cooking device and cooking method | |
| CN219780371U (en) | Electroacoustic structure and earphone | |
| CN218096125U (en) | Noise reduction system for range hood and range hood | |
| CN218183509U (en) | Small loudspeaker without elastic wave structure | |
| CN220459133U (en) | Cooking utensil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |