CN207640116U - The electromagnetic heating cooking utensil of high electrical-magnetic compatibility - Google Patents

Abstract

The utility model provides a kind of electromagnetic heating cooking utensil of high electrical-magnetic compatibility, it includes the circuit board of electromagnetic wire coil and control electromagnetic wire coil work, the circuit board is electrically connected with anti-interference capacitor, filter capacitor and filter inductance, the filter inductance is electrically connected the anti-interference capacitor and the filter capacitor, for inhibiting powered electromagnetic to interfere jointly, the filter inductance includes magnet ring and the coil that is wound on the magnet ring, the magnet ring is amorphous magnet ring, and the capacity of the anti-interference capacitor and the filter capacitor is no more than 6.8uF.Using the inductance of amorphous magnet ring, the use of large bulk capacitance is can avoid, reduces the volume of capacitance, and then reduce the volume of circuit board, cost is reduced while reaching Electro Magnetic Compatibility；And because of the capacitance without using large capacity, stand-by power consumption and residual voltage can be reduced；And avoid the security risk of large bulk capacitance aging generation.

Description

The electromagnetic heating cooking utensil of high electrical-magnetic compatibility

Technical field

The utility model is related to cooking apparatus more particularly to a kind of electromagnetic heating cooking utensils of high electrical-magnetic compatibility.

Background technology

Electromagnetic heating cooking utensil is to convert electrical energy into electromagnetic energy, and electromagnetic energy excites irony cookware self-heating, to Realize that the utensil of food cooking, common electromagnetic heating cooking utensil have electromagnetic oven, electromagnetism rice cooker etc..By taking electromagnetic oven as an example, electricity The production of magnetic stove need to meet EMC standards, to meet the mandatory standard, need to connect high pressure between the alternating current of access electromagnetic oven The capacitance of the capacitance of large capacity, large capacity occupies larger space on circuit boards so that the volume of circuit board increases, and leads to cost It improves.On the other hand, during the use of electromagnetic oven, user may not pull out power supply for a long time, and adding the capacitance of large capacity makes It obtains stand-by power consumption and residual voltage increases；And the capacitance aging service life for if things go on like this easily causing high-voltage large-capacity shortens, and causes Mechanical disorder, or even generate explosion or security risk on fire.

Thus, it is necessory to provide a kind of technical solution, to overcome the problems of the above-mentioned prior art.

Utility model content

A kind of electromagnetic compatibility is provided the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art Property good and stand-by power consumption is small, security performance is high electromagnetic heating cooking utensil.

In order to achieve the above object, the technical solution of the utility model is as follows：

A kind of electromagnetic heating cooking utensil of high electrical-magnetic compatibility comprising electromagnetic wire coil and control electromagnetic wire coil work Circuit board, the circuit board are electrically connected with anti-interference capacitor, filter capacitor and filter inductance, and the filter inductance is electrically connected The anti-interference capacitor and the filter capacitor, for inhibiting powered electromagnetic interference jointly, wherein the filter inductance includes magnetic Ring and the coil being wound on the magnet ring, the magnet ring are amorphous magnet ring, the anti-interference capacitor and the filter capacitor Capacity is no more than 6.8uF.Using the inductance of amorphous magnet ring, the anti-interference capacitor and/or filter capacitor of large capacity can avoid It uses, reduces the volume of capacitance, and then reduce the volume of circuit board, cost is reduced while reaching Electro Magnetic Compatibility；And because Without using the capacitance of large capacity, stand-by power consumption and residual voltage can be reduced；And avoid large bulk capacitance aging generation Security risk.

As the further improved technical solution of the utility model, the magnet ring is annulus column comprising from inside to outside The Multi-layer amorphous material sheet body being stacked.Magnet ring is in annulus column, is formed by the sheet coiling of amorphous material, molding side Just.

As the further improved technical solution of the utility model, the magnet ring is the circle of amorphous material powder pressing forming Central column structure.

As the further improved technical solution of the utility model, offered on the magnet ring inside and outside between setting The width of gap, the gap is 0.8mm-3.5mm.By the way that gap width is arranged within the above range, it is ensured that inductance value Stablize, under the action of pulse high current, inductance value decaying is smaller, ensure that stability of the circuit under rugged environment.

As the further improved technical solution of the utility model, insulating part is packed in the gap.By in gap Interior fill insulation part can support magnet ring, prevent magnet ring because vibrating or squeeze due to contraction distortion, ensure the steady of magnet ring structure and performance It is fixed.

As the further improved technical solution of the utility model, the outer diameter of the magnet ring is 20mm-45mm.

As the further improved technical solution of the utility model, the amorphous magnet ring is iron-based or cobalt base amorphous magnet ring.

As the further improved technical solution of the utility model, the filter inductance is differential mode inductance.

As the further improved technical solution of the utility model, the circuit board includes master control borad and the filter of split settings Wave plate, the inductance are installed on the filter band or are connected across between the filter band and the master control borad.Circuit board is seperated Setting, inductance are mounted on filter band or are connected across between two pieces of circuit boards, can further decrease the volume of circuit board so that culinary art The space of appliance internal can rationally utilize, while further strengthen Electro Magnetic Compatibility.

As the further improved technical solution of the utility model, the anti-interference capacitor is connected across the firewire and zero of alternating current Between line, the capacity of the anti-interference capacitor is not more than 5uF.By using the filter inductance of amorphous magnet ring, anti-interference capacitor is adopted EMC testing standards are can reach with the capacity no more than 5uF, while further decreasing the volume of circuit board, and reduce standby work( Consumption and residual voltage；Avoid the security risk of large bulk capacitance aging generation.

The electromagnetic heating cooking utensil of a kind of high electrical-magnetic compatibility provided by the utility model comprising electromagnetic wire coil and control The circuit board of electromagnetic wire coil work processed, the circuit board are electrically connected with filter inductance, and the filter inductance includes magnet ring and twines The coil being around on the magnet ring, the magnet ring are amorphous magnet ring.Using the filter inductance of amorphous magnet ring, large capacity electricity can avoid The use of appearance reduces the volume of capacitance, and then reduces the volume of circuit board, and cost is reduced while reaching Electro Magnetic Compatibility； And because of the capacitance without using large capacity, stand-by power consumption and residual voltage can be reduced；And avoid large bulk capacitance aging production Raw security risk.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of the utility model A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these Attached drawing obtains other attached drawings.

Fig. 1 is the stereoscopic schematic diagram of one preferred embodiment of filter inductance of the utility model electromagnetic heating cooking utensil；

Fig. 2 is the sectional view of filter inductance in Fig. 1；

Fig. 3 is the stereoscopic schematic diagram of the magnet ring of filter inductance in Fig. 1；

Fig. 4 is the vertical view of the magnet ring of filter inductance in Fig. 1；

Fig. 5 is the schematic diagram of another embodiment of the utility model electromagnetic heating cooking utensil；

Fig. 6 is the schematic diagram of the another embodiment of the utility model electromagnetic heating cooking utensil；

Fig. 7 is the schematic diagram of the power cord of the utility model electromagnetic heating cooking utensil.

Reference numeral：

1- filter inductances；11- magnet rings；The gaps 110-；111- insulating parts；12- coils；2- circuit boards；20- master control borads； 211- anti-interference capacitors；212- filter capacitors；25- filter bands；3- electromagnetic wire coils；4- power cords；40- plugs；41- is identified；42- Terminal.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts The every other embodiment obtained, shall fall within the protection scope of the present invention.

Embodiment one

Fig. 1 to Fig. 4 is referred to, is the figure of one embodiment of filter inductance of the utility model electromagnetic heating cooking utensil Show.Filter inductance 1 is used to be electrically connected with the circuit board of electromagnetic heating cooking utensil, and the filter inductance 1 includes 11 He of magnet ring The coil 12 being wound on the magnet ring 11, the magnet ring 11 are amorphous magnet ring.The utility model uses the filtering of amorphous magnet ring Inductance can avoid the use of large bulk capacitance, reduce the volume of capacitance, and then reduce the volume of circuit board, simultaneous reaching electromagnetism Cost is reduced while capacitive.In conventional solution, to meet EMC test requests, it need to use and powered electromagnetic interference is inhibited to use Fixed capacity device, generally use model MKP-X2 capacitances generally comprise one and are connected across between the firewire of alternating current and zero curve anti-do The filter capacitor disturbed capacitance and be filtered after rectification, the capacity of anti-interference capacitor need to use capacity be 10uF (microfarad) and with On large bulk capacitance, filter capacitor need to use capacity for the capacitance of 6.8uF (microfarad) or more, e.g., usually need to be using 8uF's Capacitance.And after using amorphous inductance provided by the utility model, select capacitance of the capacity no more than 6.8uF that can meet EMC Test request.On the other hand, because of the capacitance without using large capacity, stand-by power consumption and residual voltage can be reduced；And it avoids The security risk that large bulk capacitance aging generates.

Further, in the present embodiment, the amorphous magnet ring is iron-based or cobalt base amorphous magnet ring.The magnet ring 11 is circle Central column, the magnet ring 11 include the Multi-layer amorphous material sheet body being stacked from inside to outside.Magnet ring is in annulus column, by amorphous The sheet helically coiling of material forms, convenient formation.Certainly, in other embodiments, the magnet ring 11 or amorphous The circle ring column of material powder pressing forming.The outer diameter of the annulus column magnet ring be 20mm-45mm, preferably 25mm-35mm, The magnet ring of the parameter area is applied to better performances on electromagnetic heating cooking utensil.

Please emphasis refering to Fig. 3 and Fig. 4, offered on the magnet ring 11 inside and outside through the gap 110 of setting, the gap The ranging from 0.8mm-3.5mm of 110 width D, preferably 1mm-3mm.It, can by the way that gap width to be arranged within the above range The stabilization for ensureing inductance value, under the action of pulse high current, inductance value decaying is smaller, ensure that circuit under rugged environment Stability.Insulating part 111 is packed in the gap 110, by gap 110 fill insulation part 111 can support magnet ring 11, it prevents magnet ring 11 because vibrating or squeezing due to contraction distortion, ensures the stabilization of magnet ring 11 structure and performance.

It should be noted that the coil 12 is wound on the magnet ring 11 and the non-limiting coil 12 and magnet ring 11 are straight Contact.In a preferred embodiment, the magnet ring 11 is externally provided with plastic shell or insulating film, and the coil 12 is wrapped in plastic cement On shell or insulating film.The coil 12 can be copper wire, aluminum steel or copper-clad aluminum conductor, gauge or diameter of wire 0.8mm-1.8mm.

Embodiment two

Fig. 5 is the schematic diagram of the utility model embodiment two.In the present embodiment, the electromagnetic heating cooking utensil includes The circuit board 2 of electromagnetic wire coil (not shown) and control electromagnetic wire coil work, the circuit board 2 are integrated one block of plate of setting, It is equipped with filter circuit and heating control circuit.The filter circuit includes anti-interference capacitor 211, filter capacitor 212 and at least One filter inductance 1, the filter inductance 1 are the filter inductance described in embodiment one.The filter inductance 1 is differential mode electricity Sense, is connected to after rectifier bridge stack, to be filtered to the electric current after rectification.By the way that amorphous filtered electrical is arranged in filter circuit Sense 1, can reduce the capacity of capacitance 211,212.In conventional solution, to meet EMC test requests, 211 He of anti-interference capacitor Filter capacitor 212 uses MKP capacitances, and capacity is respectively 10uF and 8uF；And after using amorphous inductance provided by the utility model, Select capacitance of the capacity no more than 6.8uF that can meet EMC test requests, preferably capacitance is 4uF-6.8uF, such as 4.7uF, 5uF, 6.8uF etc..Capacity reduction especially for anti-interference capacitor 211 is obvious, and 5uF can be used or smaller is held The anti-interference capacitor of amount.Cost is reduced, stand-by power consumption is reduced, improves safety in utilization.In the present embodiment, the electricity Sense 1 is differential mode inductance, when the average current by inductance is in 10A or so, the dynamic electric inductance value error range of the inductance is ± Within 40%.

Embodiment three

Fig. 6 is the schematic diagram of the utility model embodiment three.In the present embodiment, the electromagnetic heating cooking utensil includes The circuit board that electromagnetic wire coil 3 and control electromagnetic wire coil 3 work, the circuit board includes the master control borad 20 and filter band of split settings 25.The filter inductance 1 is connected across between the filter band 25 and the master control borad 20, and the filter band 25 is equipped with anti-interference Capacitance 211.As a kind of deformation, the filter inductance 1 can be also mounted on the filter band 25.Circuit board split settings, filter Wave inductance 1 is mounted on filter band 25 or is connected across between two pieces of circuit boards, can further decrease the volume of circuit board so that cook The prepare food space of appliance internal can rationally utilize, while further strengthen Electro Magnetic Compatibility.

Referring to Fig. 7, its schematic diagram for the power cord of the utility model electromagnetic heating cooking utensil.The power cord 4 Both ends be respectively plug 40 and terminal 42, plug 40 accesses alternating current for connect with socket, and terminal 42 is used for and cooking apparatus Circuit board connection.The power cord 4 includes the insulating outer layer of internal core wire and cladding core wire periphery, in the insulating outer layer Equipped with insulating outer layer it is integrally formed mark 41, it is described it is integrally formed mark 41 can be protrusion or recess setting word Or pattern, in-mould injection molding can be used, scribe the integrated moldings modes such as molding；By way of integrated molding, mark 41 is fixed It is firm and at low cost.The word is such as can be " EMC compatibility authentications ", " Electro Magnetic Compatibility certification ", " EMC certifications ".Into One step, the power cord 4 is equipped with magnetic element, and insulating outer layer coated magnetic element forms a columned raised section, institute It states mark 41 to be set on the raised section, because the external surface area of raised section is big, is more convenient to be integrally formed the mark 41.

By combining the description of above example, a kind of electromagnetic heating cooking utensil provided by the utility model comprising The circuit board of electromagnetic wire coil and control electromagnetic wire coil work, the circuit board are electrically connected with filter inductance, the filter inductance Including magnet ring and the coil being wound on the magnet ring, the magnet ring is amorphous magnet ring.It, can using the filter inductance of amorphous magnet ring The use for avoiding large bulk capacitance reduces the volume of capacitance, and then reduces the volume of circuit board, is reaching the same of Electro Magnetic Compatibility When reduce cost；And because of the capacitance without using large capacity, stand-by power consumption and residual voltage can be reduced；And avoid large capacity The security risk of capacitance aging generation.Further, magnet ring is in annulus column, is formed by the sheet coiling of amorphous material, Convenient formation.The inside and outside gap for running through setting is offered on the magnet ring, the width in the gap is 0.8mm-3.5mm；Pass through Within the above range by gap width setting, it is ensured that the stabilization of inductance value, under the action of pulse high current, inductance value decaying It is smaller, it ensure that stability of the circuit under rugged environment.The circuit board is equipped with filter circuit, the filter circuit packet At least two capacitances and at least one inductance are included, the filtered electrical formed by least two capacitances and at least one inductance Road has preferable filter effect；Inductance and capacitance are used cooperatively so that capacitance selects low capacity, reduce cost, It reduces stand-by power consumption, improve safety in utilization.

In the description of the present invention, it should be understood that term "center", " transverse direction ", " thickness ", "upper", "lower", The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside", " radial direction ", " circumferential direction " is based on attached Orientation or positional relationship shown in figure, is merely for convenience of describing the present invention and simplifying the description, rather than indicates or imply Signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as to this The limitation of utility model.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be It is connected directly, can also can be indirectly connected through an intermediary the mutual of connection inside two elements or two elements Interactively.For the ordinary skill in the art, it can understand that above-mentioned term is new in this practicality as the case may be Concrete meaning in type.

In the present invention unless specifically defined or limited otherwise, fisrt feature is "above" or "below" second feature Can be that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature and be directly above or diagonally above the second feature, or only Indicate that fisrt feature level height is higher than second feature.

Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to In this, any one skilled in the art within the technical scope disclosed by the utility model, the change that can be readily occurred in Change or replace, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with right It is required that protection domain subject to.

Claims (10)

1. a kind of electromagnetic heating cooking utensil of high electrical-magnetic compatibility comprising the electricity of electromagnetic wire coil and control electromagnetic wire coil work Road plate, the circuit board are electrically connected with anti-interference capacitor, filter capacitor and filter inductance, and the filter inductance is electrically connected institute Anti-interference capacitor and the filter capacitor are stated, for inhibiting powered electromagnetic interference jointly, which is characterized in that the filter inductance packet The coil for including magnet ring and being wound on the magnet ring, the magnet ring are amorphous magnet ring, the anti-interference capacitor and the filtered electrical The capacity of appearance is no more than 6.8uF.

2. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as described in claim 1, which is characterized in that the magnet ring is circle Central column comprising the Multi-layer amorphous material sheet body being stacked from inside to outside.

3. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as described in claim 1, which is characterized in that the magnet ring is non- The annulus column structure of brilliant material powder pressing forming.

4. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as claimed any one in claims 1 to 3, which is characterized in that The inside and outside gap for running through setting is offered on the magnet ring, the width in the gap is 0.8mm-3.5mm.

5. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as claimed in claim 4, which is characterized in that filled out in the gap It is plugged with insulating part.

6. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as claimed in claim 2 or claim 3, which is characterized in that the magnet ring Outer diameter be 20mm-45mm.

7. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as described in claim 1, which is characterized in that the amorphous magnet ring For iron-based or cobalt base amorphous magnet ring.

8. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as claimed in claim 4, which is characterized in that the filter inductance For differential mode inductance.

9. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as described in claim 1, which is characterized in that the circuit board packet Include the master control borad and filter band of split settings, the filter inductance be installed on the filter band or be connected across the filter band and Between the master control borad.

10. the electromagnetic heating cooking utensil of high electrical-magnetic compatibility as described in claim 1, which is characterized in that described anti-interference Capacitance is connected across between the firewire of alternating current and zero curve, and the capacity of the anti-interference capacitor is not more than 5uF.