阅读说明：本技术 换能器和烹饪设备及其控制方法 (Transducer and cooking apparatus and control method thereof ) 是由 何斌 王帅 王志锋 于 2018-06-04 设计创作，主要内容包括：本发明提供了换能器和烹饪设备及其控制方法。所述换能器包括：壳体,所述壳体限定出容纳空间；振动杆,振动杆的一端伸入容纳空间中,并连接在壳体上,且振动杆的一部分由磁致伸缩材料形成,以形成伸缩段；磁场发生部件,磁场发生部件设置在容纳空间中,用于为磁致伸缩材料提供交变磁场；振动板,振动板可拆卸的连接在振动杆远离壳体的一端。发明人发现,磁致伸缩材料在交变磁场的作用下产生能量密度较高的超声振动,进而磁致伸缩材料的超声振动就会带动振动杆在与之相同的频率下进行超声振动,之后振动杆会将该超声振动传递到振动板上,并使振动板的振动频率与磁致伸缩材料的振动频率保持一致,最终使与振动板相接触的物体发生超声振动。(The invention provides a transducer and a cooking apparatus and a control method thereof. The transducer includes: a housing defining an accommodating space; one end of the vibrating rod extends into the accommodating space and is connected to the shell, and one part of the vibrating rod is made of magnetostrictive materials to form a telescopic section; the magnetic field generating component is arranged in the accommodating space and is used for providing an alternating magnetic field for the magnetostrictive material; the vibrating plate is detachably connected to one end, far away from the shell, of the vibrating rod. The inventor finds that the magnetostrictive material generates ultrasonic vibration with high energy density under the action of the alternating magnetic field, the ultrasonic vibration of the magnetostrictive material drives the vibrating rod to perform ultrasonic vibration at the same frequency as the vibrating rod, then the vibrating rod transmits the ultrasonic vibration to the vibrating plate, the vibration frequency of the vibrating plate is consistent with the vibration frequency of the magnetostrictive material, and finally an object in contact with the vibrating plate generates ultrasonic vibration.)

1. A transducer, comprising:

A housing defining an accommodating space;

The vibrating rod is connected to the shell, one end of the vibrating rod extends into the accommodating space, and a part of the vibrating rod is made of magnetostrictive materials to form a telescopic section;

A magnetic field generating member disposed in the accommodating space for providing an alternating magnetic field to the magnetostrictive material;

The vibration plate is detachably connected to one end, far away from the shell, of the vibration rod.

2. The transducer of claim 1, wherein the housing is symmetrical about the vibratory rod.

3. The transducer of claim 1, wherein the housing includes a bottom wall, a side wall, and a top wall, the bottom wall, the side wall, and the top wall collectively define the enclosed receiving space, the vibrating rod protrudes into the receiving space through the top wall, and the top wall is formed of a metal or metal alloy material.

4. The transducer of claim 3, further comprising:

A baffle disposed above the top wall, the vibrating rod passing through the baffle;

A spring disposed between the baffle and the top wall and in a compressed state.

5. The transducer of claim 1, wherein the vibrating plate is symmetric about the vibrating rod.

6. The transducer of any of claims 1-5, wherein the horn comprises a connecting section and a horn section that are removably connected, the connecting section being disposed in the receiving space and the telescoping section being located on the connecting section and the horn section being disposed outside of the receiving space.

7. the transducer of claim 6, wherein the length of the telescopic section is 2-15 mm, and the length of the amplitude-changing section is 12-90 mm.

8. Cooking device, characterized in that it comprises a transducer according to any one of claims 1 to 7.

9. The cooking apparatus of claim 8, further comprising:

A frequency tracking system for detecting an eigenfrequency of the cooking vessel;

A magnetic field frequency adjusting assembly for adjusting the frequency of the alternating magnetic field generated by the magnetic field generating member according to the eigenfrequency of the cooking container.

10. The cooking apparatus according to claim 8 or 9, wherein the cooking apparatus is an induction cooker, a heating coil of the induction cooker is disposed above a housing of the transducer, a vibrating rod of the transducer passes through a center hole of the heating coil and extends toward an opening on a panel of the induction cooker, and a vibrating plate of the transducer is disposed in cooperation with a bottom of the cooking container.

11. the cooking apparatus according to claim 10, further comprising a sealing member for sealing the opening of the induction cooker panel and the vibration rod or the vibration plate.

12. The cooking apparatus of claim 11, wherein the sealing member is a silicone gasket.

13. A method of controlling the cooking apparatus of any one of claims 9 to 12, comprising:

Determining an eigenfrequency of the cooking vessel,

adjusting the frequency of the alternating magnetic field generated by the magnetic field generating part in the transducer so that the vibration frequency of the vibrating rod and the vibrating plate in the transducer coincides with the eigenfrequency of the cooking vessel.

Technical Field

The invention relates to the technical field of cooking equipment, in particular to a transducer, cooking equipment and a control method of the transducer and the cooking equipment.

Background

Cooking equipment such as an induction cooker and the like cook food by heating, and at present, people find that ultrasonic vibration can improve nutrition of food, but at present, a non-thermal effect (the non-thermal effect refers to an effect that an electromagnetic field changes a physiological and biochemical process by a mode other than a thermal effect of raising the temperature of a living body, such as ultrasonic vibration) is not realized, and the ultrasonic vibration of the food in the cooking process is difficult to realize and enhance.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a transducer which can convert electrical energy into mechanical energy, and when the transducer is applied to a cooking device, the transducer can generate ultrasonic vibration to a cooking container and food, thereby improving the taste and nutrition of the food.

In one aspect of the invention, a transducer is provided. According to an embodiment of the invention, the transducer comprises: a housing defining an accommodating space; the vibrating rod is connected to the shell, one end of the vibrating rod extends into the accommodating space, and a part of the vibrating rod is made of magnetostrictive materials to form a telescopic section; a magnetic field generating member disposed in the accommodating space for providing an alternating magnetic field to the magnetostrictive material; the vibration plate is detachably connected to one end, far away from the shell, of the vibration rod. The inventor finds that the magnetostrictive material generates ultrasonic vibration with higher energy density under the action of an alternating magnetic field, the ultrasonic vibration of the magnetostrictive material drives the vibrating rod to vibrate at the same frequency as the vibrating rod, then the vibrating rod transmits the ultrasonic vibration to the vibrating plate, the vibration frequency of the vibrating plate is kept consistent with the vibration frequency of the magnetostrictive material, and finally the object in contact with the vibrating plate generates ultrasonic vibration to realize the conversion of electric energy to mechanical energy, for example, when the transducer is applied to cooking equipment, the vibrating plate can be arranged to be in contact with a cooking container, so that the ultrasonic vibration of the vibrating plate can be transmitted to the cooking container and food therein to generate ultrasonic vibration of the cooking container and food therein, the ultrasonic vibration can generate a cavitation effect on the food, namely, the food generates local high temperature and high pressure, is beneficial to improving the emulsification of food and further improving the nutrition and the taste of the food.

According to an embodiment of the invention, the housing is symmetrical with respect to the vibratory rod.

According to an embodiment of the present invention, the housing includes a bottom wall, a side wall, and a top wall, the bottom wall, the side wall, and the top wall collectively define the closed accommodating space, the vibration rod protrudes into the accommodating space through the top wall, and the top wall is formed of a metal or metal alloy material.

according to an embodiment of the invention, the transducer further comprises: a baffle disposed above the top wall, the vibrating rod passing through the baffle; a spring disposed between the baffle and the top wall and in a compressed state.

According to an embodiment of the present invention, the vibration plate is symmetrical with respect to the vibration rod.

According to the embodiment of the invention, the vibrating rod comprises a connecting section and an amplitude-variable section which are detachably connected, the connecting section is arranged in the accommodating space, the telescopic section is positioned on the connecting section, and the amplitude-variable section is arranged outside the accommodating space.

According to the embodiment of the invention, the length of the telescopic section is 2-15 mm, and the length of the amplitude variation section is 12-90 mm.

In another aspect of the present invention, the present invention provides a cooking apparatus. According to an embodiment of the invention, a transducer as described above is included. Therefore, the ultrasonic vibration can be generated on the cooking container of the cooking equipment and the food in the cooking container through the transducer, the ultrasonic vibration can enable the food to generate a cavitation effect, namely, the food generates local high temperature and high pressure, the emulsification effect of the food is favorably improved, and the nutrition and the mouthfeel of the food are further improved.

According to an embodiment of the present invention, the cooking apparatus further comprises: a frequency tracking system for detecting an eigenfrequency of the cooking vessel; a magnetic field frequency adjusting assembly for adjusting the frequency of the alternating magnetic field generated by the magnetic field generating member according to the eigenfrequency of the cooking container.

According to the embodiment of the invention, the cooking device is an induction cooker, a heating coil of the induction cooker is arranged above a shell of the transducer, the vibrating rod penetrates through a center hole of the heating coil and extends towards an opening of a panel of the induction cooker, and a vibrating plate of the transducer is matched with the bottom of the cooking container.

According to an embodiment of the present invention, the induction cooker further includes a sealing member for sealing the opening of the induction cooker panel and the vibration rod or the vibration plate.

According to an embodiment of the present invention, the sealing member is a silicone gasket.

In a further aspect of the invention, the invention provides a method of controlling a cooking apparatus as hereinbefore described. According to an embodiment of the invention, the method comprises: determining an eigenfrequency of the cooking vessel, and adjusting a frequency of an alternating magnetic field generated by the magnetic field generating part in the transducer so that a vibration frequency of the vibrating rod and the vibrating plate in the transducer coincides with the eigenfrequency of the cooking vessel. Therefore, the control method is easy to operate and convenient to control, and the control method can ensure that the vibration frequency of the cooking container is the eigen frequency when the cooking container cooks different food materials, so that the nutrition of food can be optimized, and the service life of the transducer can be prolonged.

Drawings

FIG. 1 is a schematic diagram of a transducer in one embodiment of the invention.

Fig. 2 is a schematic diagram of the construction of a transducer in another embodiment of the invention.

Fig. 3 is a schematic diagram of the construction of a transducer in accordance with yet another embodiment of the present invention.

Fig. 4 is a schematic diagram of a transducer in accordance with yet another embodiment of the present invention.

Fig. 5 is a schematic diagram of a transducer in accordance with yet another embodiment of the invention.

Fig. 6 is a schematic structural view of an induction cooker according to still another embodiment of the present invention.

Fig. 7 is a schematic structural view of an induction cooker according to still another embodiment of the present invention.

Fig. 8 is a schematic structural view of an induction cooker according to still another embodiment of the present invention.

Fig. 9 is a schematic structural view of an induction cooker according to still another embodiment of the present invention.

Fig. 10 is a schematic structural view of an induction cooker according to still another embodiment of the present invention.

Fig. 11 is a schematic structural view of an induction cooker according to still another embodiment of the present invention.

Fig. 12 is a schematic structural view of an induction cooker according to still another embodiment of the present invention.

Reference numerals:

10-a housing; 11-an accommodation space; 12-a bottom wall; 13-a side wall; 14-a top wall; 20-a vibrating rod; 21-a telescopic section; 22-a connecting segment; 23-a luffing section; 30-a magnetic field generating member; 40-a vibrating plate; 50-a baffle; 60-a spring; 70-external circuit; 80-an induction cooker; 81-heating coil; 811-center hole of heating coil; 82-induction cooker panel; 821-upper surface of electromagnetic oven panel; 822-opening of induction cooker panel; 90-a control circuit; 100-cooking container

Detailed Description

The following describes embodiments of the present invention in detail. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

In one aspect of the invention, a transducer is provided. According to an embodiment of the present invention, referring to fig. 1, a transducer includes: a housing 10, the housing 10 defining an accommodating space 11; a vibration rod 20, one end of which 20 is inserted into the receiving space 11 and is connected to the case 10, and a portion of which 20 is formed of a magnetostrictive material to form a telescopic section 21; a magnetic field generating part 30, the magnetic field generating part 30 being disposed in the accommodating space 11 for providing an alternating magnetic field to the magnetostrictive material; and the vibrating plate 40 is detachably connected to one end of the vibrating rod 20 far away from the shell 10. The inventor finds that the magnetostrictive material generates ultrasonic vibration with high energy density under the action of an alternating magnetic field, the ultrasonic vibration of the magnetostrictive material drives the vibrating rod to vibrate at the same frequency as the vibrating rod, then the vibrating rod transmits the ultrasonic vibration to the vibrating plate, the vibration frequency of the vibrating plate is consistent with the vibration frequency of the magnetostrictive material, finally, an object in contact with the vibrating plate generates ultrasonic vibration, the conversion of electric energy to mechanical energy is realized, the arrangement of the vibrating plate can enlarge the vibration area, and finally, the vibration area of the object in contact with the vibrating plate and the vibration uniformity are enlarged. For example, when this transducer is applied to cooking equipment, can set up the vibration board and contact with the cooking container, so, the ultrasonic vibration of vibration board just can transmit cooking container and wherein food, and guarantee that cooking container and wherein food all can take place ultrasonic vibration, this ultrasonic vibration can make food produce cavitation effect, even make food produce local high temperature and high pressure, be favorable to improving the emulsification of food, and then improve the nutrition and the taste of food.

according to the embodiment of the present invention, the specific shape of the housing is not limited, and those skilled in the art can design flexibly according to actual requirements. In the embodiment of the present invention, the shape of the housing includes, but is not limited to, a cylindrical shape or a prismatic shape such as a straight quadrangular prism. Thus, design and manufacture are facilitated.

according to the embodiment of the invention, in order to improve the uniformity of vibration, the shell can be designed to be symmetrical about the vibrating rod. Therefore, the magnetostrictive material can be positioned in the middle of the shell, so that the vibration uniformity is improved, and the transducer has certain aesthetic property. Here, the symmetry means that the housing is symmetrical about the axis of the vibration rod.

According to an embodiment of the present invention, referring to fig. 2, the case 10 includes a bottom wall 12, a side wall 13, and a top wall 14, the bottom wall, the side wall, and the top wall collectively defining a closed receiving space, the vibration rod 20 protrudes into the receiving space 11 through the top wall 14, and the top wall 14 is formed of a metal or metal alloy material. From this, can set up the flexible section in accommodation space, when the flexible section during operation under the effect of magnetic field, the roof that is formed by metal or metal alloy can protect the magnetic field that magnetic field generation component produced and not receive the interference of external electromagnetic field to prevent to influence the vibration frequency of flexible section. According to a preferred embodiment of the invention, the entire housing can be made of stainless steel, whereby the magnetic field generated by the magneto-generating component can be better protected from external electromagnetic fields. Meanwhile, when the transducer is applied to other electromagnetic products, the magnetic field generated by the magnetic field generating component of the transducer can be prevented from influencing other electromagnetic components.

According to an embodiment of the present invention, in order to make an object in contact with the vibration plate vibrate uniformly, the vibration plate may be designed to be symmetrical with respect to the vibration rod. Therefore, the ultrasonic vibration of the vibrating rod can be uniformly transmitted to the vibrating plate, the vibrating plate can be in a uniform vibration state, and finally the vibration uniformity of an object in contact with the vibrating plate is improved. Here, the symmetry means that the vibration plate is symmetrical about the vibration axis.

According to the embodiment of the present invention, the shape of the vibration plate is not limited, and those skilled in the art can flexibly select the shape according to actual conditions. In the embodiment of the present invention, the shape of the vibration plate includes, but is not limited to, a circle or a square. Thereby, design and manufacture are facilitated.

according to the embodiment of the present invention, the specific material forming the vibration plate is not limited, and those skilled in the art can flexibly select the material according to actual needs. In some embodiments of the present invention, the material of the vibration plate and the material of the vibration rod may be kept consistent, for example, the materials of the vibration plate and the vibration rod are both metal or metal alloy material such as stainless steel. Therefore, the forming materials of the vibrating plate and the vibrating rod are kept consistent, and when the vibrating rod transmits ultrasonic vibration to the vibrating plate, the vibrating plate and the vibrating rod have better compatibility, so that energy loss is reduced; non-metallic materials such as metal or stainless steel are selected, so that more effective transmission of ultrasonic vibration can be ensured, and energy loss is reduced.

According to the embodiment of the invention, the vibrating plate is detachably connected to one end of the vibrating rod away from the shell, wherein the specific mode of detachable connection is not limited, and the vibrating plate can be flexibly designed by a person skilled in the art according to actual requirements. In embodiments of the present invention, the detachable connection includes, but is not limited to, a threaded connection, a snap connection, and the like. Therefore, the design and the manufacture are convenient, the transmission of the ultrasonic vibration between the vibrating rod and the vibrating plate is facilitated, and the energy loss is reduced to the maximum extent.

In order to facilitate the design of the specific structure of the transducer according to the embodiment of the present invention, referring to fig. 3, the vibration rod 20 includes a connection section 22 and a variable-amplitude section 23 which are detachably connected (e.g., screw-connected), the connection section 22 is disposed in the accommodating space 11, the telescopic section 21 is located on the connection section 22, and the variable-amplitude section 23 is disposed outside the accommodating space 11. Thus, individual design of each different structure is facilitated, and replacement is also facilitated when a structural component is damaged. Specifically, a person skilled in the art can set the telescopic section at the position of the inclined top wall, the middle position or the inclined bottom wall of the connecting section according to actual requirements, and preferably, the telescopic section is not in contact with the bottom wall, so that the bottom wall can be prevented from being damaged during long-time vibration; the length and the diameter of the amplitude variation section and the thickness and the area of the vibrating plate connected with the amplitude variation section can be designed according to actual requirements by a person skilled in the art, so that the amplitude variation section and the vibrating plate integrally have smaller acoustic impedance, the amplitude variation section and the vibrating plate have the largest vibration amplitude, and finally, an object in contact with the vibrating plate has the largest amplitude, and the conversion rate of converting electric energy into mechanical energy is improved.

According to the embodiment of the invention, materials for forming the connecting section (excluding the telescopic section) and the amplitude-variable section are not limited, and the materials for forming the connecting section (excluding the telescopic section) and the amplitude-variable section can be the same or different, and can be flexibly selected by a person skilled in the art according to actual requirements. In some embodiments of the present invention, the material forming the connecting section (excluding the telescoping section) and the horn section is selected from non-metallic materials such as metals or stainless steel, and most preferably, is consistent with the material of the vibrating plate. Therefore, when the vibrating rod transmits the ultrasonic vibration to the vibrating plate, the vibrating rod and the vibrating plate have better compatibility, and the energy loss is reduced.

The particular type of magnetostrictive material is not a limiting requirement according to embodiments of the invention, and those skilled in the art can flexibly select the material according to practical requirements such as the application of the transducer. In some embodiments of the present invention, where it is desired to have a magnetostrictive material with a large amplitude, at least one of nickel, permalloy, and ferrite may be selected; in other embodiments of the present invention, the magnetostrictive material has a small amplitude, and at least one of a binary alloy of iron and a rare earth giant magnetostrictive material such as a Tb-Dy-Fe material may be selected. Therefore, the selection range is wide, and the technicians in the field can select different magnetostrictive materials according to different requirements to meet different requirements of users. Of course, one skilled in the art can select any other magnetostrictive material according to the requirement, which is not limited by the present application.

according to the embodiment of the invention, the lengths of the telescopic section and the amplitude-changing section are mutually influenced, and the length of the telescopic section and the amplitude-changing section can be flexibly adjusted by a person skilled in the art according to the materials of the telescopic section and the amplitude-changing section and the use frequency of the telescopic section, so that the acoustic impedance between the telescopic section and the amplitude-changing section is minimum. In some embodiments of the present invention, the length of the telescopic section is 2 to 15 mm, and the length of the variable amplitude section is 12 to 90 mm. Therefore, the telescopic section and the amplitude-variable section are matched with each other, so that the acoustic impedance between the telescopic section and the amplitude-variable section is the minimum, the amplitude telescopic section and the amplitude-variable section are improved to the maximum extent, the vibration amplitude of an object in contact with the vibration plate is further improved, and the vibration strength of the object in contact with the vibration plate is improved. When this transducer is applied to cooking equipment, the vibration of culinary art container and food wherein also can reach the biggest, guarantees that culinary art container and food wherein all can take place ultrasonic vibration, makes food produce cavitation effect, the emulsification of better improvement food, and then improves the nutrition and the taste of food.

According to the embodiment of the present invention, the specific kind of the magnetic field generating member is not limited as long as it can generate a magnetic field of a certain strength. In an embodiment of the invention, the magnetic field generating member is a drive coil. Therefore, alternating current with a certain magnitude is provided for the driving coil, the driving coil can generate a magnetic field with a certain intensity, specifically, the larger the alternating current is, the larger the magnetic field intensity is, the larger the vibration frequency of the magnetostrictive material is, so that a person skilled in the art can provide alternating current with a certain magnitude for the driving coil according to the required vibration frequency, and the vibrating rod, the vibrating plate and an object in contact with the vibrating plate can generate ultrasonic vibration at the required frequency. In some embodiments of the present invention, the magnetic field generating members may be plural, and most preferably, the plural magnetic field generating members are uniformly distributed along the outer periphery of the telescopic section. Therefore, the vibration uniformity of the telescopic section can be improved, and the vibration uniformity of the vibrating plate is further improved.

According to the embodiment of the present invention, as described above, the amplitude of the amplitude-varying section and the vibration plate can be maximized by designing the length and diameter of the amplitude-varying section and the thickness and area of the vibration plate, and in order to further increase the amplitude of the amplitude-varying section and the vibration plate, referring to fig. 4, the transducer further includes: a baffle 50, the baffle 50 is arranged above the top wall 14, and the vibrating rod 20 penetrates through the baffle 50; and a spring 60, the spring 60 being disposed between the baffle 50 and the top wall 14 and being in a compressed state. Therefore, when the spring is in a compressed state, the pressure of the spring is transmitted to the telescopic section through the top wall, the amplitude of ultrasonic vibration generated by the magnetostrictive material is improved to a certain extent under the action of the pressure, the amplitude of the vibrating rod and the vibrating plate is further improved, and finally the vibration amplitude and the strength of an object in contact with the vibrating plate are improved. It should be noted that the spring is in a compressed state, which means that the spring is compressed by the baffle and the top wall, and generates a force perpendicular to the baffle and the top wall.

according to the embodiment of the present invention, the formation material of the baffle is also not limited as long as a certain force can be applied to the spring. In some embodiments of the invention, the material forming the baffle may be selected from a metal or a metal alloy such as stainless steel. Therefore, the magnetic field protection device has a good use effect, is not easy to damage, and can further prevent the magnetic field generated by the magnetic generation component from being interfered by an external electromagnetic field.

According to the embodiment of the invention, there is no limitation on the magnitude of the force applied by the spring, and those skilled in the art can flexibly select the force according to actual requirements, and there is no limitation here.

According to an embodiment of the present invention, referring to fig. 5, the transducer may further include an external circuit 70 electrically connected to a power source through the external circuit 70, so as to provide an alternating current to the magnetic field generating component to generate an alternating magnetic field.

According to the embodiment of the invention, the transducer may further comprise a transducer control system for controlling the vibration frequency of the transducer, and specifically, the transducer control system may be configured to change the magnitude of the alternating current of the magnetic field generating component of the transducer, so that the magnetic field generating component generates alternating magnetic fields with different strengths and frequencies, so that the transducer may have a plurality of different vibration frequencies to meet different use requirements of the transducer, and of course, the transducer control system may further comprise a switch for controlling the operation of the transducer.

In another aspect of the present invention, the present invention provides a cooking apparatus. According to an embodiment of the invention, a transducer as described above is included. Therefore, the ultrasonic vibration can be generated on the cooking container of the cooking equipment and the food in the cooking container through the transducer, the ultrasonic vibration can enable the food to generate a cavitation effect, namely, the food generates local high temperature and high pressure, the emulsification effect of the food is favorably improved, and the nutrition and the mouthfeel of the food are further improved.

according to the embodiment of the invention, since the cooking container has different eigenfrequencies at different temperatures and when cooking different foods, in order to ensure that the cooking container can vibrate at the eigenfrequencies, the cooking apparatus further comprises a frequency tracking system for detecting the eigenfrequencies of the cooking container; a magnetic field frequency adjusting assembly for adjusting the frequency of the alternating magnetic field generated by the magnetic field generating member according to the eigenfrequency of the cooking container. Therefore, when the frequency tracking system detects that the eigenfrequency of the cooking container changes, the magnitude of alternating current of the magnetic field generating component can be changed through the magnetic field frequency adjusting component, the frequency of an alternating magnetic field generated by the magnetic field generating component is changed, and then the vibration frequency of the magnetostrictive material is changed, so that the vibrating rod and the vibrating plate carry out ultrasonic vibration under the eigenfrequency of the cooking container, therefore, the eigenfrequency of the cooking container can be adjusted according to different foods, the service lives of the transducer and the cooking container can be prolonged, and the nutritional value of the foods can be optimized.

It should be noted that the cooking container may be a part of a cooking apparatus, such as an electric cooker; or may be a part other than a cooking apparatus, such as an induction cooker.

According to an embodiment of the present invention, referring to fig. 6 to 11, the cooking appliance is an induction cooker 80, and a heating coil 81 of the induction cooker 80 is disposed above a case 10 of the transducer, a vibration rod 20 passes through a center hole 811 of the heating coil 81 and extends toward an opening 822 of an induction cooker panel 82, and a vibration plate 40 of the transducer is disposed in cooperation with a bottom of the cooking container 100. From this, when the electromagnetism stove used, vibration plate 40 and the bottom cooperation setting of cooking container 100, so, the ultrasonic vibration of vibration plate will transmit for the cooking container, makes cooking container and wherein food carry out ultrasonic vibration under certain frequency and amplitude, and this ultrasonic vibration can make food produce cavitation effect, even make food produce local high temperature and high pressure, is favorable to improving the emulsification of food, and then improves the nutrition and the taste of food.

According to the embodiment of the present invention, the specific manner of arranging the vibration plate in cooperation with the bottom of the cooking container is not limited, and those skilled in the art can flexibly select the vibration plate according to actual needs. In some embodiments of the present invention, referring to fig. 6 and 7, the vibration rod 20 does not pass through the induction cooker panel, and the vibration plate 40 is embedded in the opening 822 of the induction cooker panel and is flush with the upper surface 821 of the induction cooker panel, so there is no limitation on the cooking container, and a variety of different cooking containers can be applied to the induction cooker; in other embodiments of the present invention, referring to fig. 8 and 9, the vibration rod 20 passes through the top plate of the induction cooker, and the vibration plate 40 is disposed just in contact with the upper surface 821 of the top plate of the induction cooker, and the vibration plate is embedded in the bottom of the cooking container, so that the vibration plate can better transmit the ultrasonic vibration to the cooking container, and reduce the energy loss; in still other embodiments of the present invention, referring to fig. 10 and 11, the vibration rod 20 passes through the top plate of the induction cooker, the vibration plate 40 is disposed at a distance from the top surface 821 of the induction cooker, and the vibration plate 40 is embedded in the bottom of the cooking container, so that the vibration plate does not contact with the induction cooker, the ultrasonic vibration of the vibration plate is transmitted to the cooking container, and the negative effect of the ultrasonic vibration of the vibration plate on the top plate of the induction cooker can be avoided.

According to the embodiment of the present invention, there is no limitation on the specific kinds of the heating coil, the cooking container and the induction cooker panel, and those skilled in the art can flexibly select them according to actual needs, and there is no limitation here.

According to the embodiment of the present invention, in order to prevent water from being used during cooking and water from leaking to a circuit board of the induction cooker (the circuit board includes an electric heating control system of a heating coil), the induction cooker further includes a sealing member (not shown) for sealing an opening 822 of a panel of the induction cooker and the vibration rod 20 (refer to fig. 8 to 11) or the vibration plate 40 (refer to fig. 6 to 7). Therefore, the electromagnetic oven can be prevented from being short-circuited and influencing the service life of the electromagnetic oven due to water leakage into the circuit board. However, it should be noted that after sealing, the longitudinal vibration (perpendicular to the panel of the induction cooker) of the vibration rod cannot be affected, so that the vibration rod can better transmit the ultrasonic vibration of the telescopic section to the vibration plate, and the energy loss is reduced to the maximum extent.

According to the embodiment of the present invention, the specific kind of the sealing member is not limited as long as the opening of the induction cooker panel can be sealed with the vibration rod. In some embodiments of the invention, the sealing member is a silicone gasket. Therefore, the sealing performance is excellent, and the waterproof and leakproof effects are achieved; is completely nontoxic and tasteless, and is safe to use; the material does not deform and generate harmful substances at high-strength temperature; good tensile resistance and long service life.

According to the embodiment of the present invention, when the transducer includes the transducer control system, the frequency tracking system and the magnetic field frequency adjusting assembly may be disposed in the transducer control system, and the electrothermal control system and the transducer control system are integrated in the same circuit board to form a control circuit 90, and the structure diagram refers to fig. 12, and the magnitude of the alternating current of the magnetic field generating component is changed by the transducer control system. Therefore, the circuits are arranged in a centralized mode, and control and management are facilitated.

Those skilled in the art will understand that the above description only describes the situation when the transducer is applied to an induction cooker, and is not to be construed as limiting the application of the transducer or the cooking apparatus, in other words, the cooking apparatus of the present application may be various cooking apparatuses such as a microwave oven, an electric cooker, and the like, besides an induction cooker, and will not be described one by one herein.

In a further aspect of the invention, the invention provides a method of controlling a cooking apparatus as hereinbefore described. According to an embodiment of the invention, the method comprises:

S100: the eigenfrequency of the cooking vessel is determined.

according to the embodiment of the invention, since the cooking container has different eigenfrequencies at different temperatures and when cooking different foods, the eigenfrequencies of the cooking container are tracked at any time by the frequency tracking system.

S200: the frequency of the alternating magnetic field generated by the magnetic field generating member in the transducer is adjusted so that the vibration frequency of the vibrating rod and the vibrating plate in the transducer coincides with the eigenfrequency of the cooking vessel.

According to the embodiment of the invention, when the transducer is provided with the transducer control system, the intensity of the magnetic field generated by the magnetic field generating component in the transducer can be adjusted through the transducer control system, so that the frequency of the ultrasonic vibration of the magnetostrictive material is changed, and the frequency of the ultrasonic vibration of the vibrating rod in the transducer is consistent with the eigenfrequency of the cooking container. Therefore, the eigenfrequency of the cooking container can be adjusted according to different foods, the service life of the transducer and the service life of the cooking container can be prolonged, and the nutritive value of the foods can be optimized.

The inventor finds that the control method is easy to operate and convenient to control, and the control method can ensure that the vibration frequency of the cooking container is the local oscillation frequency when the cooking container cooks different food materials, so that the nutrition of food can be optimized, and the service life of the transducer can be prolonged.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.