CN110961335A - Ultrasonic vibrator device and cooking utensil with same - Google Patents
Ultrasonic vibrator device and cooking utensil with same Download PDFInfo
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- CN110961335A CN110961335A CN201811138741.0A CN201811138741A CN110961335A CN 110961335 A CN110961335 A CN 110961335A CN 201811138741 A CN201811138741 A CN 201811138741A CN 110961335 A CN110961335 A CN 110961335A
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0611—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements in a pile
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/004—Cooking-vessels with integral electrical heating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/55—Piezoelectric transducer
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses an ultrasonic vibrator device and a cooking utensil with the same, wherein the ultrasonic vibrator device comprises: the piezoelectric component comprises a piezoelectric sheet and an electrode sheet connected with the piezoelectric sheet; the first end block and the second end block are respectively arranged at two axial ends of the piezoelectric component; the vibrating rod is arranged at one end of the second end block, which is far away from the piezoelectric component; a first insulating ring disposed between the piezoelectric assembly and the second end block; and a fastener penetrating the first end block, the piezoelectric assembly, the first insulating ring, the second end block and the vibration rod to connect the first end block, the piezoelectric assembly, the first insulating ring, the second end block and the vibration rod together. The ultrasonic vibrator device provided by the embodiment of the invention can effectively improve the high-voltage creepage phenomenon, reduce the electric shock risk of a user, avoid the damage to a human body, and is safer and more reliable.
Description
Technical Field
The invention relates to the technical field of cooking appliances, in particular to an ultrasonic vibrator device and a cooking appliance with the same.
Background
When the ultrasonic vibrator works, the voltage of the electrode plate is several times higher than the voltage of the mains supply, and the ultrasonic vibrator is dangerous. In the related technology, the design of the ultrasonic vibrator has creepage phenomenon and weak current, so that a user feels electric shock in the using process, and certain potential safety hazard is generated.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide an ultrasonic transducer device which can effectively improve a high-voltage creepage phenomenon.
Another object of the present invention is to provide a cooking appliance having the ultrasonic transducer device.
An ultrasonic transducer device according to an embodiment of the present invention includes: the piezoelectric component comprises a piezoelectric sheet and an electrode sheet connected with the piezoelectric sheet; the first end block and the second end block are respectively arranged at two axial ends of the piezoelectric assembly; the vibrating rod is arranged at one end, far away from the piezoelectric assembly, of the second end block; a first insulating ring disposed between the piezoelectric assembly and the second end block; a fastener penetrating the first end block, the piezoelectric module, the first insulating ring, the second end block, and the vibration rod to connect the first end block, the piezoelectric module, the first insulating ring, the second end block, and the vibration rod together.
The ultrasonic vibrator device provided by the embodiment of the invention can effectively improve the high-voltage creepage phenomenon, reduce the electric shock risk of a user, avoid the damage to a human body, and is safer and more reliable.
In addition, the ultrasonic transducer device according to the above embodiment of the present invention may further have the following additional technical features:
according to the ultrasonic vibrator device of the embodiment of the present invention, the first insulating ring is an alumina ceramic ring or a zirconia ceramic ring.
According to some embodiments of the invention, the fastening element is insulated from the piezoelectric element, and the part of the fastening element in contact with the piezoelectric element is a plastic part.
According to some embodiments of the invention, the thickness H1 of the first insulating ring satisfies: h1 is not less than 4mm and not more than 7 mm.
In some embodiments of the present invention, the thickness H1 of the first insulating ring and the thickness H2 of the piezoelectric sheet satisfy: h2 is more than or equal to 3mm and less than or equal to 6mm, and H1+ H2 is more than or equal to 10mm and less than or equal to 13 mm.
The ultrasonic vibrator device according to the embodiment of the present invention further includes: and the insulating sleeve is arranged between the fastening piece and the piezoelectric assembly so as to enable the fastening piece and the piezoelectric assembly to be arranged in an insulating mode.
In some embodiments of the present invention, an inner peripheral surface of the second end block facing one end of the first insulating ring is provided with a first annular groove, and a first sealant layer is provided in the first annular groove.
Further, one end of the insulating sleeve extends into the first annular groove, and the first sealant layer is at least arranged between the outer peripheral surface of the insulating sleeve and the inner peripheral surface of the first annular groove.
In some embodiments of the present invention, the ultrasonic vibrator device further comprises: a second insulating ring penetrated by the fastener and located between the piezoelectric assembly and the first end block.
Furthermore, a second annular groove is formed in the inner peripheral surface of the first end block, the other end of the insulating sleeve extends into the second annular groove, a second sealing adhesive layer is further arranged in the second annular groove, and the second sealing adhesive layer is at least arranged between the inner peripheral surface of the second annular groove and the outer peripheral surface of the insulating sleeve.
According to some embodiments of the invention, the ultrasonic vibrator device further comprises: the outer peripheral surface of the first insulating ring outwards exceeds the outer peripheral surface of the piezoelectric assembly, and the first insulating glue layer is arranged on the outer peripheral surface of the first insulating ring.
Further, the ultrasonic transducer device further includes: the outer peripheral surface of the second insulating ring outwards exceeds the outer peripheral surface of the piezoelectric assembly, and the second insulating glue layer is arranged on the outer peripheral surface of the second insulating ring.
According to some embodiments of the present invention, the electrode sheets include three positive electrode sheets, a first negative electrode sheet, and a second negative electrode sheet, the piezoelectric sheets include two piezoelectric sheets arranged in a stacked manner, the positive electrode sheet is sandwiched between the two piezoelectric sheets, the first negative electrode sheet is sandwiched between the first end block and the piezoelectric sheets, and the second negative electrode sheet is sandwiched between the piezoelectric sheets and the first insulating ring.
In some embodiments of the present invention, the ultrasonic vibrator device further comprises: the utility model provides a vibration damping device, including the vibrating bar, the vibrating bar is connected in order to realize the ground connection of vibrating bar, the vibrating bar with second end piece an organic whole forms, the outer peripheral face of second end piece is equipped with outside convex mounting flange, mounting flange's orientation the one side of first end piece is equipped with convex erection column, the one end of earth connection is equipped with the wiring ring, the wiring ring with the erection column passes through connecting fastener and connects.
A cooking appliance according to an embodiment of the present invention includes an ultrasonic vibrator device according to an embodiment of the present invention.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of an ultrasonic vibrator device according to an embodiment of the present invention;
fig. 2 is an exploded view of an ultrasonic vibrator device according to an embodiment of the present invention;
fig. 3 is a sectional view of an ultrasonic vibrator device according to an embodiment of the present invention;
fig. 4 is an exploded view of an ultrasonic vibrator device according to another embodiment of the present invention;
fig. 5 is a sectional view of an ultrasonic vibrator device according to another embodiment of the present invention;
FIG. 6 is an enlarged schematic view of FIG. 5 at circle A;
fig. 7 is an enlarged schematic view of the structure of fig. 5 at circle B.
Reference numerals:
an ultrasonic vibrator device 100;
a piezoelectric component 10; a piezoelectric sheet 11; an electrode sheet 12; a positive electrode tab 121; a first negative electrode tab 122; a second negative electrode tab 123;
a first end block 20; a second annular groove 201;
a second end block 30; a first annular groove 301; a mounting flange 31; a mounting post 311;
a vibrating rod 40; a horn body 41; a launch pad 42;
a first insulating ring 50; a first insulating glue layer 501; a second insulating ring 51; a second insulating glue layer 511;
a fastener 60;
a first sealant layer 70; the second sealant layer 71;
an insulating sleeve 80;
a ground line 90; a wire bonding ring 91; a positive line 92; and a negative electrode line 93.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
An ultrasonic vibrator device 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 7.
Referring to fig. 1 to 7, an ultrasonic vibrator device 100 according to an embodiment of the present invention may include: piezoelectric assembly 10, first end mass 20, second end mass 30, vibration rod 40, first insulating ring 50, and fastener 60.
Specifically, the piezoelectric assembly 10 may include a piezoelectric sheet (e.g., piezoelectric ceramic) 11 and electrode pieces 12, and the electrode pieces 12 may be connected to the piezoelectric sheet 11. When the electrode sheet 12 is electrified, the voltage across the two end faces of the piezoelectric sheet 11 can be changed, and the piezoelectric sheet 11 generates high-frequency vibration under current excitation by utilizing the inverse piezoelectric effect, so that the conversion from electric power to mechanical power is realized, and ultrasonic waves are generated. Alternatively, in some embodiments, the piezoelectric sheet 11 may be plural, and a plurality of piezoelectric sheets 11 may be stacked.
As shown in fig. 1 to 5, the first end block 20 may be provided at one axial end of the piezoelectric module 10, and the second end block 30 may be provided at the other axial end of the piezoelectric module 10, so that the ultrasonic transducer device 100 may be formed as a sandwich type ultrasonic transducer device, and the first end block 20 and the second end block 30 may cooperate to fix the piezoelectric module 10, so as to improve the stability of the piezoelectric module 10, and at the same time, to adjust the resonance frequency of the ultrasonic transducer device 100, and to transmit energy. The sandwich type ultrasonic vibrator device is easy to process, easy to adjust the frequency and simple in structure.
When the ultrasonic transducer device 100 is applied to a cooking utensil or the like, the ultrasonic waves generated by the piezoelectric module 10 may be transmitted to the outside by an indirect method in which the ultrasonic waves are transmitted through a medium, or by an entering method in which the vibrating rod 40 directly enters the medium to operate. The vibrating rod 40 may be disposed at an end of the second end block 30 remote from the piezoelectric module 10, and mechanical vibration generated by the piezoelectric module 10 may be transmitted to the vibrating rod 40 through the second end block 30, and the mechanical vibration may continue to be transmitted along the vibrating rod 40 and be emitted outward to act on a propagation medium.
When the ultrasonic vibrator works, the voltage of the electrode plate is several times higher than the voltage of the mains supply, and the ultrasonic vibrator is dangerous. In the related technology, the design of the ultrasonic vibrator has creepage phenomenon and weak current, and a user may feel electric shock in the using process and a touchable application scene, so that certain potential safety hazard is generated.
In the present invention, the first insulating ring 50 may be disposed between the piezoelectric element 10 and the second end block 30, and the first insulating ring 50 may isolate the piezoelectric element 10 from the second end block 30, increase a distance between the piezoelectric element 10 and the second end block 30, and isolate a high voltage creepage phenomenon occurring during the operation of the piezoelectric element 10, so that a current cannot be transmitted from the piezoelectric element 10 to the second end block 30, thereby reducing a risk of electric shock of a user due to touching the second end block 30.
In addition, as shown in fig. 3 and 5, a fastener 60 may penetrate the first end block 20, the piezoelectric assembly 10, the first insulating ring 50, the second end block 30 and the vibration rod 40 to apply a sufficient axial pre-load on the first end block 20, the piezoelectric assembly 10, the first insulating ring 50, the second end block 30 and the vibration rod 40 to connect the first end block 20, the piezoelectric assembly 10, the first insulating ring 50, the second end block 30 and the vibration rod 40 together, so as to be firmly connected.
Further, the portion of the fastening member 60 contacting the piezoelectric assembly 10 is made of plastic, or the fastening member 60 is formed as a plastic fastening member, so that the fastening member 60 and the piezoelectric assembly 10 can be insulated from each other, and the fastening member 60 can insulate the first end block 20, the piezoelectric assembly 10, the second end block 30 and the vibration rod 40, thereby preventing the piezoelectric assembly 10 from short-circuiting, and on the other hand, the fastening member 60 and the first insulating ring 50 cooperate to insulate the first end block 20, the second end block 30 and the vibration rod 40 from the piezoelectric assembly 10, thereby further preventing a user from getting an electric shock.
According to the ultrasonic vibrator device 100 of the embodiment of the present invention, the first insulating ring 50 is disposed between the piezoelectric assembly 10 and the second end block 30, so that the second end block 30 and the piezoelectric assembly 10 can be isolated, a high voltage creepage phenomenon is effectively improved, a user electric shock risk is reduced, a human body is prevented from being injured, and the device is safer and more reliable.
Alternatively, in the present invention, the first insulating ring 50 may be a ceramic ring, such as an alumina ceramic ring or a zirconia ceramic ring, which has good insulating property, and is resistant to high temperature and abrasion, and is beneficial to prolonging the service life of the ultrasonic vibrator device 100.
In some embodiments of the present invention, as shown in fig. 3, the thickness H1 of the first insulating ring 50 (i.e., the axial length of the first insulating ring 50) may satisfy: 4mm ≦ H1 ≦ 7mm, for example, the thickness H1 may be 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, and the like. Both can guarantee isolated high voltage creepage phenomenon, prevent again that first insulating ring 50's thickness H1 is too big, and lead to ultrasonic vibrator device 100's axial length overlength, or cause the impedance big, the serious problem of piezoelectric component 10 generating heat is favorable to reducing ultrasonic vibrator device 100's operating temperature, makes ultrasonic vibrator device 100 can keep good energy transfer efficiency.
According to some embodiments of the present invention, as shown in fig. 3, the thickness H2 of the piezoelectric sheet 11 may satisfy: 3mm ≦ H2 ≦ 6mm, for example, the thickness H2 of the piezoelectric sheet 11 may be 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, and the like, and the thickness H1 of the first insulating ring 50 and the thickness H2 of the piezoelectric sheet 11 may satisfy: 10mm ≦ H1+ H2 ≦ 13mm, for example, H1+ H2 may be 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, and the like. Therefore, the distance between the electrode plate 12 of the piezoelectric component 10 and the second end block 30 can be further ensured to be long enough, the high-voltage creepage phenomenon can be isolated better, and meanwhile, the piezoelectric component 10 is prevented from generating heat seriously due to the overlong axial length of the ultrasonic vibrator device 100.
In some embodiments of the present invention, as shown in fig. 3, 5 and 6, the ultrasonic vibrator device 100 may further include an insulating sheath 80, and the insulating sheath 80 may be disposed between the fastening member 60 and the piezoelectric element 10, for example, the insulating sheath 80 may be disposed over the fastening member 60, so that the fastening member 60 and the piezoelectric element 10 may be disposed in an insulating manner. Therefore, the insulating sleeve 80 can insulate the first end block 20, the piezoelectric assembly 10, the second end block 30 and the vibration rod 40, prevent the piezoelectric assembly 10 from short-circuiting, and have better insulating effect on the first end block 20, the second end block 30 and the vibration rod 40.
It should be noted that in embodiments including the insulating sheath 80, the fastener 60 may be an insulating fastener, such as a plastic fastener, or the like, and the fastener 60 may also be a metal fastener, such as a stainless steel bolt, or the like.
Further, when the voltage of the piezoelectric assembly 10 is excessive, there is still a risk of high voltage creepage from the inner peripheral surface of the first insulating ring 50 to the second terminal block 30. Therefore, in a further embodiment of the present invention, the inner circumferential surface of the end of the second end block 30 facing the first insulating ring 50 may be provided with a first annular groove 301, and the first sealant layer 70 may be disposed in the first annular groove 301. The first sealant layer 70 may seal a gap between the inner circumferential surface of the first insulating ring 50 and the fastening member 60, and further isolate high voltage creepage from the inner circumferential surface of the first insulating ring 50 to the second end block 30, so that the second end block 30 has better insulation.
In some embodiments, as shown in fig. 4 and 6, one end of the insulating sheath 80 may extend into the first annular groove 301, which not only increases the area of the insulating sheath 80 isolating the first end block 20, the second end block 30 and the vibrating rod 40 to improve the insulating effect, but also limits the position of the insulating sheath 80 by the first annular groove 301, so that the insulating sheath 80 is fixed more stably. For example, the axial position of the insulating sleeve 80 may be restricted when the axial end face of the insulating sleeve 80 abuts against the bottom groove face of the first annular groove 301.
As shown in fig. 6, the first sealant layer 70 is at least disposed between the outer circumferential surface of the insulating sleeve 80 and the inner circumferential surface of the first annular groove 301 to seal the gap between the outer circumferential surface of the insulating sleeve 80 and the inner circumferential surface of the first insulating ring 50 and to shield the outer circumferential surface of the insulating sleeve 80, thereby preventing the creepage at the corner formed by the first insulating ring 50 and the insulating sleeve 80. Therefore, on the premise of meeting safety requirements, the thickness of the first insulating ring 50 can be reduced according to actual conditions, so that impedance is reduced, the heat generation amount of the piezoelectric assembly 10 is reduced, and the production cost of the first insulating ring 50 can be reduced.
It should be noted that the position where the first sealant layer 70 is disposed is not limited to the position between the outer circumferential surface of the insulating sheath 80 and the inner circumferential surface of the first annular groove 301. For example, in some embodiments, the first sealant layer 70 may also be disposed between the axial end surface of the insulating sleeve 80 far from the first end block 20 and the bottom groove surface of the first annular groove 301 to seal the axial end surface of the insulating sleeve 80 far from the first end block 20, so as to prevent creepage due to a gap between the outer circumferential surface of the insulating sleeve 80 and the first sealant layer 70.
According to a further embodiment of the present invention, as shown in fig. 1 to 6, the ultrasonic vibrator device 100 may further include a second insulating ring 51. The fastener 60 can penetrate through the second insulating ring 51, so that the second insulating ring 51 is connected with the first end block 20, the piezoelectric assembly 10, the first insulating ring 50, the second end block 30 and the vibrating rod 40, and the second insulating ring 51 can be located between the piezoelectric assembly 10 and the first end block 20 to isolate the piezoelectric assembly 10 from the first end block 20, increase the distance between the piezoelectric assembly 10 and the first end block 20, isolate the high-voltage creepage phenomenon in the working process of the piezoelectric assembly 10, prevent the first end block 20 from being electrified to cause electric shock of a user, and is safer.
Alternatively, the second insulating ring 51 may be a ceramic ring, such as an alumina ceramic ring or a zirconia ceramic ring, which has good insulating property, and is resistant to high temperature and abrasion, and is beneficial to prolonging the service life of the ultrasonic vibrator device 100.
Alternatively, as shown in fig. 3, the thickness H3 of the second insulating ring 51 may satisfy: h3 is more than or equal to 4mm and less than or equal to 7mm, and the thickness H2 of the piezoelectric sheet 11 can satisfy the following conditions: h2 is more than or equal to 3mm and less than or equal to 6mm, and the thickness H3 of the second insulating ring 51 and the thickness H2 of the piezoelectric sheet 11 can satisfy the following conditions: h2+ H3 is more than or equal to 10mm and less than or equal to 13 mm. Not only can the isolated high-voltage creepage be ensured, but also the piezoelectric component 10 is prevented from generating heat seriously due to the overlarge thickness H3 of the second insulating ring 51, which is beneficial to reducing the working temperature of the ultrasonic vibrator device 100 and ensures that the ultrasonic vibrator device 100 can keep good energy transfer efficiency.
As shown in fig. 6, the inner circumferential surface of the first end block 20 may be provided with a second annular groove 201, and an end of the insulating sleeve 80 far from the second end block 30 may extend into the second annular groove 201 to further limit the insulating sleeve 80. In addition, a second sealant layer 71 may be further disposed in the second annular groove 201, and the second sealant layer 71 is at least disposed between an inner circumferential surface of the second annular groove 201 and an outer circumferential surface of the insulating sleeve 80 to seal a gap between the outer circumferential surface of the insulating sleeve 80 and the inner circumferential surface of the second insulating ring 51, and shield the outer circumferential surface of the insulating sleeve 80, so as to prevent a creepage phenomenon from occurring at a corner formed by the second insulating ring 51 and the insulating sleeve 80. Therefore, on the premise of meeting the safety requirements, the thickness of the second insulating ring 51 can be reduced according to actual conditions, so that the impedance is reduced, the heat generation amount of the piezoelectric sheet 11 is reduced, and the production cost of the second insulating ring 51 can be reduced.
Of course, the position of the second sealant layer 71 is not limited to the position between the outer circumferential surface of the insulating sleeve 80 and the inner circumferential surface of the second annular groove 201, for example, in the specific embodiment shown in fig. 6, the second sealant layer 71 is further disposed between the axial end surface of the insulating sleeve 80 away from the second end block 30 and the bottom groove surface of the second annular groove 201 to seal the axial end surface of the insulating sleeve 80 away from the second end block 30, so as to prevent creepage due to a gap between the outer circumferential surface of the insulating sleeve 80 and the second sealant layer 71.
In some embodiments of the present invention, as shown in fig. 5 and 7, the outer peripheral surface of the first insulating ring 50 may extend outward beyond the outer peripheral surface of the piezoelectric assembly 10, so as to increase the radial insulating distance of the first insulating ring 50, and prevent the second end block 30 and the vibration rod 40 from being electrified due to creepage along the radial direction of the first insulating ring 50, so as to meet the safety requirements and achieve better electric shock prevention effect.
Further, the ultrasonic vibrator device 100 may further include a first layer of adhesive 501, and the first layer of adhesive 501 may be provided on the outer circumferential surface of the first insulating ring 50. The first insulating adhesive layer 501 may extend along the radial direction of the first insulating ring 50 to form a ring shape with the first insulating ring 50, where the outer diameter of the ring shape exceeds the outer peripheral surface of the piezoelectric assembly 10 more than the outer diameter of the ring shape, so as to further increase the insulating distance and improve the anti-creepage and anti-electric shock effects. And in the embodiment including the first insulating glue layer 501, the radial dimension and the axial dimension of the first insulating ring 50 can be appropriately reduced to satisfy the safety requirements, and the production cost of the first insulating ring 50 and the amount of heat generation of the piezoelectric assembly 10 can be reduced.
In some embodiments, as shown in fig. 5 and 7, the inner peripheral edge of the first insulating glue layer 501 may be formed with an annular groove that opens toward the first end block 20, the inner peripheral surface of the annular groove may cover the outer peripheral surface of the first insulating ring 50, and the bottom groove surface of the annular groove may cover the outer edge of the axial end surface of the first insulating ring 50 that is away from the first end block 20. Thereby, the connection area of the first insulation glue layer 501 and the first insulation ring 50 can be increased while preventing the occurrence of creepage between the outer circumferential surface of the first insulation ring 50 and the inner circumferential surface of the annular groove.
According to some embodiments of the present invention, as shown in fig. 5 and 7, the outer peripheral surface of the second insulating ring 51 may also extend outward beyond the outer peripheral surface of the piezoelectric assembly 10, so as to increase the radial insulating distance of the second insulating ring 51, prevent the first end block 20 from being electrified due to creepage along the radial direction of the second insulating ring 51, further satisfy the safety requirements, and achieve better electric shock prevention effect.
Further, as shown in fig. 5 and 7, the ultrasonic vibrator device 100 may further include a second insulating adhesive layer 511, and the second insulating adhesive layer 511 may be disposed on an outer circumferential surface of the second insulating ring 51 to increase a distance from the outer circumferential surface of the piezoelectric element 10 to the outside, thereby further increasing an insulating distance and improving creepage and electrocution preventing effects. And in the embodiment including the second insulating glue layer 511, the radial dimension and the axial dimension of the second insulating ring 51 can be appropriately reduced to satisfy the safety requirements, and the production cost of the second insulating ring 51 and the amount of heat generation of the piezoelectric assembly 10 can be reduced.
Optionally, in the present invention, the first insulating adhesive layer 501 and the second insulating adhesive layer 511 may be high temperature adhesive, and the high temperature adhesive may be integrally formed on the outer peripheral edge of the first insulating ring 50 or the second insulating ring 51 by injection molding, so that the high temperature adhesive is firmly connected with the first insulating ring 50 or the second insulating ring 51, and has no gap, and a good high temperature resistant effect and an excellent electric shock preventing effect.
In the present invention, the number of the piezoelectric sheets 11 and the electrode sheets 12 can be adjusted according to actual requirements, so that the ultrasonic vibrator device 100 can output ultrasonic waves with different intensities to meet different use requirements. In further embodiments, as shown in fig. 1 to 5, the electrode sheet 12 may be plural, a plurality of electrode sheets 12 may be spaced apart by the piezoelectric sheet 11 to form different electrodes or to change a voltage difference between two end faces of the piezoelectric sheet 11, and further, the plurality of electrode sheets 12 may form a parallel or series circuit so that the ultrasonic transducer device 100 can output ultrasonic waves of different intensities.
For example, in the specific embodiment shown in fig. 1-5, the piezoelectric sheets 11 are two sheets stacked, and the electrode sheets 12 may include three electrode sheets 12, namely, the positive electrode sheet 121, the first negative electrode sheet 122 and the second negative electrode sheet 123. The positive electrode tab 121 may be sandwiched between the two piezoelectric tabs 11, the second negative electrode tab 123 may be sandwiched between the piezoelectric tabs 11 and the first insulating ring 50, the first negative electrode tab 122 may be sandwiched between the first end block 20 and the piezoelectric tabs 11, and in an embodiment including the second insulating ring 51, the first negative electrode tab 122 may be sandwiched between the second insulating ring 51 and the piezoelectric tabs 11.
As shown in fig. 1 and 2, the positive electrode tab 121 may be electrically connected to the positive electrode line 92, and the first negative electrode tab 122 and the second negative electrode tab 123 may be electrically connected to the negative electrode line 93, respectively, so that the piezoelectric tab 11 may be connected in parallel by the positive electrode tab 121, the first negative electrode tab 122 and the second negative electrode tab 123 to increase the capacitance, so that the ultrasonic vibrator device 100 may meet more use requirements.
According to some embodiments of the present invention, as shown in fig. 1 and 2, the ultrasonic vibrator device 100 may further include a ground wire 90, and the ground wire 90 may be electrically connected to the vibration bar 40 to ground the vibration bar 40 and prevent the vibration bar 40 from transferring electric charges. When the ultrasonic transducer device 100 is mounted on a cooking utensil or the like, the vibration rod 40 is exposed, and thus a human body easily touches the vibration rod 40. If the vibrating rod 40 is electrified, the electric shock of a user is easy to happen, the vibrating rod 40 is grounded, the electric shock of the user can be effectively avoided, and potential safety hazards are avoided.
Further, as shown in fig. 1 and 2, the vibration bar 40 and the second end block 30 may be integrally formed to simplify the structure of the ultrasonic vibrator device 100 and reduce the assembly process. The outer peripheral surface of the second end block 30 may be provided with an outwardly protruding mounting flange 31, one end of the ground wire 90 may be provided with a wire connection ring 91, the wire connection ring 91 and the mounting flange 31 may be connected by a connection fastener, and the connection structure is simple and firm. Alternatively, the terminal ring 91 may be a terminal.
Still further, as shown in fig. 1 and fig. 2, a protruding mounting post 311 may be disposed on a surface of the mounting flange 31 facing the first end block 20, and the wire connection ring 91 may be connected to the mounting post 311 by a connection fastener, so as to electrically connect the ground wire 90 to the vibration rod 40, and the connection structure of the ground wire 90 is simple and convenient, and the wire connection ring 91 is in surface-to-surface contact with the mounting post 311, so that the connection resistance is smaller, and the connection is more stable.
In addition, the ultrasonic vibrator device 100 can be mounted to a device such as a cooking utensil through the mounting flange 31, specifically, the connecting fastener can be inserted into the mounting hole of the mounting post 311 and the device such as a cooking utensil, that is, the mounting post 311 can be used for fixing the ground wire 90 and mounting the ultrasonic vibrator device 100, and the structure of the ultrasonic vibrator device 100 can be simplified.
In some embodiments of the present invention, as shown in fig. 1-5, the vibratory rod 40 may include: a horn body 41 and a launch disc 42. The amplitude-changing rod body 41 can change the amplitude of the ultrasonic wave, improve the vibration velocity ratio and improve the energy transmission efficiency of the ultrasonic wave. Optionally, as shown in fig. 3, the radial sectional area of the horn body 41 may be variable, for example, the horn body 41 may be formed as a stepped rod, a tapered rod, or the like, which not only facilitates processing and assembling, and is easy to ensure processing precision, and is beneficial to improving working frequency precision and ultrasonic effect, but also can realize energy collection and improve ultrasonic transmission efficiency.
Further, as shown in fig. 1-5, a transmitting disc 42 may be disposed at an end of the horn body 41 remote from the piezoelectric assembly 10, and the ultrasonic waves transmitted to the horn body 41 from the second end block 30 may be continuously transmitted to the transmitting disc 42, and the transmitting disc 42 is emitted outward. The transmitting disc 42 may protrude from the outer circumferential surface of the horn body 41 at the end far from the piezoelectric assembly 10, so that the area for transmitting the ultrasonic waves outwards may be increased, and the ultrasonic vibrator device 100 may act on a medium in a wider range to improve the ultrasonic effect.
It should be noted that the structure of the transmitting disk 42 includes, but is not limited to, the horn head shown in fig. 1-5, and in other embodiments, it is only necessary to satisfy the requirement that the outer peripheral surface of the transmitting disk 42 protrudes outward from the end of the horn body 41 away from the piezoelectric assembly 10.
In the present invention, the ultrasonic vibrator device 100 according to the embodiment of the present invention can be applied to various fields. In some embodiments, the ultrasonic vibrator device 100 may be mounted to a washing apparatus, where the washing apparatus may be a rice washer, a dish washer, a washing machine, or the like. The mechanical action and the cavitation of the ultrasonic waves can clean microstructures such as pits and gaps of a piece to be washed, remove harmful substances such as dirt and pesticides more thoroughly, and improve the washing efficiency and the washing effect.
In other embodiments, the cooking appliance according to the embodiment of the present invention includes the ultrasonic vibrator device 100 according to the embodiment of the present invention, where the cooking appliance may be an electric cooker, an electric pressure cooker, a soup pot, a stew cup, a health preserving pot, a soybean milk machine, a wall breaking machine, or the like. Because the ultrasonic vibrator device 100 according to the embodiment of the present invention has the above-mentioned beneficial technical effects, the cooking appliance according to the embodiment of the present invention can effectively improve the high voltage creepage, reduce the electric shock risk of the user, avoid the injury to the human body, and be safer and more reliable.
Further, the ultrasonic vibrator device 100 may be mounted on a pot cover of the cooking appliance, an inner cover or a cover plate of the pot cover may be provided with a mounting hole, and the ultrasonic vibrator device 100 may be inserted into the mounting hole. When the ultrasonic vibrator device 100 is operated, the vibration rod 40 may extend into a cooking cavity of the cooking appliance, and the ultrasonic waves emitted from the vibration rod 40 may directly or indirectly perform ultrasonic processing on the food material in the cooking cavity.
Ultrasonic mechanical action and cavitation not only can carry out the preliminary treatment to eating the material when not cooking, get rid of the filth in eating the material, pesticides, harmful substance such as meat blood, it is clean safety more, can reduce the extraction time of the nutrient composition in eating the material and the time of tasting in eating the material at the culinary art in-process in addition, it is better to eat the material taste, can also carry out ultrasonic cleaning to cooking utensil after the culinary art finishes simultaneously, make the scaling dispersion of attaching to on the chamber wall in culinary art chamber, it is loose, drop, realize cooking utensil's automatically cleaning, it is easier to wash, it is clean.
Other constructions and operations of the cooking appliance and the ultrasonic vibrator device 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description herein, references to the description of the terms "embodiment," "particular embodiment," "example," etc., mean 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. An ultrasonic transducer device, comprising:
the piezoelectric component comprises a piezoelectric sheet and an electrode sheet connected with the piezoelectric sheet;
the first end block and the second end block are respectively arranged at two axial ends of the piezoelectric assembly;
the vibrating rod is arranged at one end, far away from the piezoelectric assembly, of the second end block;
a first insulating ring disposed between the piezoelectric assembly and the second end block;
a fastener penetrating the first end block, the piezoelectric module, the first insulating ring, the second end block, and the vibration rod to connect the first end block, the piezoelectric module, the first insulating ring, the second end block, and the vibration rod together.
2. The ultrasonic transducer device according to claim 1, wherein the ultrasonic transducer is a piezoelectric transducer,
the first insulating ring is an alumina ceramic ring or a zirconia ceramic ring.
3. The ultrasonic transducer device according to claim 1, wherein the ultrasonic transducer is a piezoelectric transducer,
the fastening piece and the piezoelectric assembly are arranged in an insulating mode, and the part, in contact with the piezoelectric assembly, of the fastening piece is a plastic piece.
4. The ultrasonic transducer device according to claim 1, wherein the thickness H1 of the first insulating ring satisfies: h1 is not less than 4mm and not more than 7 mm.
5. The ultrasonic transducer device according to claim 1, wherein a thickness H1 of the first insulating ring and a thickness H2 of the piezoelectric sheet satisfy: h2 is more than or equal to 3mm and less than or equal to 6mm, and H1+ H2 is more than or equal to 10mm and less than or equal to 13 mm.
6. The ultrasonic transducer device according to claim 1, further comprising:
and the insulating sleeve is arranged between the fastening piece and the piezoelectric assembly so as to enable the fastening piece and the piezoelectric assembly to be arranged in an insulating mode.
7. The ultrasonic transducer device according to claim 6, wherein an inner peripheral surface of the second end block facing one end of the first insulating ring is provided with a first annular groove, and a first sealant layer is provided in the first annular groove.
8. The ultrasonic vibrator device according to claim 7, further comprising:
one end of the insulating sleeve extends into the first annular groove, and the first sealing glue layer is at least arranged between the outer peripheral surface of the insulating sleeve and the inner peripheral surface of the first annular groove.
9. The ultrasonic vibrator device according to any one of claims 1 to 8, further comprising:
a second insulating ring penetrated by the fastener and located between the piezoelectric assembly and the first end block.
10. The ultrasound transducer device according to claim 9, wherein the inner peripheral surface of the first end block is provided with a second annular groove, the other end of the insulating sheath extends into the second annular groove, and a second sealant layer is further provided in the second annular groove, the second sealant layer being provided at least between the inner peripheral surface of the second annular groove and the outer peripheral surface of the insulating sheath.
11. The ultrasonic vibrator device according to any one of claims 1 to 8, further comprising:
the outer peripheral surface of the first insulating ring outwards exceeds the outer peripheral surface of the piezoelectric assembly, and the first insulating glue layer is arranged on the outer peripheral surface of the first insulating ring.
12. The ultrasonic transducer device according to claim 11, further comprising:
the outer peripheral surface of the second insulating ring outwards exceeds the outer peripheral surface of the piezoelectric assembly, and the second insulating glue layer is arranged on the outer peripheral surface of the second insulating ring.
13. The ultrasonic vibrator device according to claim 1, wherein the electrode pieces include three positive electrode pieces, a first negative electrode piece, and a second negative electrode piece, the piezoelectric pieces include two piezoelectric pieces arranged in a stacked manner, the positive electrode piece is sandwiched between the two piezoelectric pieces, the first negative electrode piece is sandwiched between the first end block and the piezoelectric pieces, and the second negative electrode piece is sandwiched between the piezoelectric pieces and the first insulating ring.
14. The ultrasonic transducer device according to claim 1, further comprising:
the utility model provides a vibration damping device, including the vibrating bar, the vibrating bar is connected in order to realize the ground connection of vibrating bar, the vibrating bar with second end piece an organic whole forms, the outer peripheral face of second end piece is equipped with outside convex mounting flange, mounting flange's orientation the one side of first end piece is equipped with convex erection column, the one end of earth connection is equipped with the wiring ring, the wiring ring with the erection column passes through connecting fastener and connects.
15. A cooking appliance comprising an ultrasonic vibrator device according to any one of claims 1 to 14.
Priority Applications (7)
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CN201811138741.0A CN110961335B (en) | 2018-09-28 | 2018-09-28 | Ultrasonic vibrator device and cooking utensil with same |
JP2020572796A JP7078764B2 (en) | 2018-09-28 | 2019-07-05 | Power coupler, ultrasonic vibrating device, ultrasonic vibrator, mounting assembly, cover assembly, cooking utensils and heating equipment |
US17/280,889 US11569607B2 (en) | 2018-09-28 | 2019-07-05 | Power coupler, ultrasonic oscillator device, ultrasonic oscillator, mounting assembly, cover body assembly, cooking utensil and heating apparatus |
EP19865610.0A EP3841927A4 (en) | 2018-09-28 | 2019-07-05 | Power coupler, ultrasonic oscillator device, ultrasonic oscillator, mounting assembly, cover body assembly, cooking utensil and heating apparatus |
PCT/CN2019/094914 WO2020063015A1 (en) | 2018-09-28 | 2019-07-05 | Power coupler, ultrasonic oscillator device, ultrasonic oscillator, mounting assembly, cover body assembly, cooking utensil and heating apparatus |
CA3114127A CA3114127C (en) | 2018-09-28 | 2019-07-05 | Power coupler, ultrasonic oscillator device, ultrasonic oscillator, mounting assembly, cover body assembly, cooking utensil and heating apparatus |
JP2022082493A JP7318061B2 (en) | 2018-09-28 | 2022-05-19 | Power Couplers, Ultrasonic Vibrators, Ultrasonic Transducers, Mounting Assemblies, Cover Assemblies, Cookware and Heating Appliances |
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