CN208892225U - A kind of electric cooker - Google Patents

Abstract

A kind of electric cooker due to introducing noninductive coil for heating, and noninductive coil is set in pot body；So that the thermal inertia of heat transfer can be ignored substantially, the effect of heat transfer is fine；Also, the temperature of inner surface of pot body rises also quickly, can or transient heating quick to food or water；In addition, so that not needing too high temperature in itself, positive thermal resistance effect is unobvious since hot sensing efficiency is high；Electric current is equal everywhere in noninductive coil, unlike being given containing iron pot heating electromagnetic oven, if forming multiple vortex currents on iron pot；Electric current thus in noninductive coil is equal everywhere, uniform heat distribution；Since noninductive coil is substantially without reactance, so that reactive power consumption is very low, the power of electric cooker can be made very high.

Description

A kind of electric cooker

Technical field

The present invention relates to a kind of electric cookers.

Background technique

At present in kitchen when cooking cooks equal, there are mainly three types of the technological means of heating.

The first, natural gas or piped gas etc. are used as the energy to be heated, so that cooking is cooked.This way It is to be heated using open fire fever, disadvantage is mainly that pipeline is laid to that this is very high, especially for some old film areas Pipeline is laid with transformation.

The second, carry out cooking using electric furnace heating to cook.

Electric furnace generally includes container made of the materials such as ceramics and the heating wire around container setting, and principle is hair Heated filament generates heat after being powered, and passes to the container being substantially surrounded, to realize the purpose heated to the food materials in the container.

The shortcomings that electric furnace, is: 1. due to the thermal inertia of heat transfer, so that the effect of heat transfer is bad, constraining finally to food The temperature that material is heated；In turn, to reach the final heating temperature met reluctantly (such as 300 degree), then need heat The temperature in source (such as above-mentioned heating wire) itself is very high (such as 1500 degree)；2. heating wire itself also has positive thermal resistance effect, that is, send out The resistance of heated filament can be increased as temperature increases, and since the temperature of heating wire in electric furnace use process is very high, this to send out The positive thermal resistance effect of heated filament is all the more obvious；Again because heating wire is equal it is practically impossible to be ideal resistance everywhere, by In the positive thermal resistance effect of heating wire, so that the resistance of heating wire in actual use everywhere may differ by larger, cause to send out The big obvious temperature in place part of heater resistance is excessively high, is used for a long time, is extremely easy to appear problem, such as aging etc..

Chalybeate cookware is put in third, electromagnetic oven, is cooked to heat progress cooking.

Electromagnetic oven is invented based on electromagnetic induction phenomenon, i.e., generates direction by coil using alternating current and constantly change The inside of the alternating magnetic field of change, the conductor in alternating magnetic field will will appear vortex current, this is that eddy electric field pushes conductor Caused by middle carrier moving；The joule heating effect of vortex current makes conductor heat up, to realize heating；Specifically, when with iron content When boiler face is placed in matter cookware bottom, cookware is to cut alternate magnetic force line and generate the electric current of alternation in cookware bottom metal portion (being vortexed), vortex makes the free electron in the ferrous material of cookware bottom in circinate alternate motion, passes through the Joule heat of electric current (P=I 2*R) makes the bottom of a pan generate heat；Summarize in short: electromagnetic oven uses magnetic field inducing eddy current heating principle, it utilizes alternation electricity Stream generates alternating magnetic field by coil and can generate countless powerful when the magnetic induction line in magnetic field passes to the bottom containing iron pot Small vortex, make pot itself voluntarily rapidly fever, then reheat pot in food.

Electromagnetic oven heating carrys out cooking and cooks, the disadvantage is that: the resistivity of the heating power and its material itself that are 1. vortexed at Inverse ratio, and equally there is positive thermal resistance effect mentioned above containing iron pot, i.e., as self-temperature containing iron pot increases, resistance It increases, resistivity increases, so that vortex has the upper limit containing the heating power in iron pot, is restricted；2. electromagnetic oven generates Alternating current magnetic field be it is non-uniform, be vortexed being unevenly distributed in the bottom of a pan, the material of pot be also impossible to be it is uniform, this three A factor can all lead to the bottom of a pan, and temperature distribution is non-uniform, i.e., some local temperature are high, some local temperature are low, to generate heat Spot effect；The high place of temperature simultaneously, positive thermal resistance effect is obvious, causes resistance and resistivity at this obviously to become larger, to make The part is further heated up, and hot spot effect is all the more obvious, also accelerates the problem of aging etc. of pot；3. cookware is being placed in electromagnetism In the alternating current magnetic field that furnace generates, the inductance generated is very big, so that reactive power consumption is very high, this makes the fever function of cookware itself The rate upper limit and efficiency are restricted.

Summary of the invention

The application provides a kind of electric cooker.

According in a first aspect, providing a kind of electric cooker in a kind of embodiment, comprising:

For cooked food or the pot body heated up water；

Noninductive coil for heating；

The noninductive coil is set in pot body by insulated.

In one embodiment, the pot body is the insulator made of material thermally conductive and/or resistant to high temperature.

In one embodiment, it is provided with insulating coating on the inner surface of the pot body and/or outer surface, it is described for sealing Noninductive coil.

In one embodiment, the pot body include bottom and be arranged around bottom with formed hemi-closure space around portion, The noninductive coil is set in the bottom of pot body.

In one embodiment, the pot body include bottom and be arranged around bottom with formed hemi-closure space around portion, The noninductive coil be set to pot body in the portion.

In one embodiment, the pot body include bottom and be arranged around bottom with formed hemi-closure space around portion, The noninductive coil is set in the bottom of pot body and stretches to around portion.

In one embodiment, the noninductive coil joins end to end to form access, for incuding changing magnetic field to generate electricity Stream generates heat.

In one embodiment, the electric cooker further include: electric cooker cover and shell, the shell is for accommodating and putting Set pot body；It is provided on the shell for providing the unit of changing magnetic field to noninductive coil.

In one embodiment, the electric cooker further includes power interface, and the power interface is arranged in pot body, the nothing Sense coil is electrically connected with power interface, is generated heat for external power supply.

In one embodiment, the electric cooker further include: electric cooker cover and shell, the shell is for accommodating and putting Set pot body.

According to the electric cooker of above-described embodiment, due to introducing noninductive coil for heating, and noninductive coil is set to pot In vivo；So that the thermal inertia of heat transfer can be ignored substantially, the effect of heat transfer is fine；Also, in the temperature of inner surface of pot body It rises also quickly, it can be to food or water quickly or transient heating；In addition, since hot sensing efficiency is high, so that being not required in itself Temperature that will be too high, positive thermal resistance effect are unobvious；Electric current is equal everywhere in noninductive coil, gives unlike electromagnetic oven and heats containing iron pot Equally, if forming multiple vortex currents on iron pot；Electric current thus in noninductive coil is equal everywhere, uniform heat distribution；By In noninductive coil substantially without reactance, so that reactive power consumption is very low, the power of electric cooker can be made very high.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of pot body and noninductive coil in a kind of electric cooker of embodiment；

Fig. 2 is a kind of schematic diagram of the noninductive coil of embodiment；

Fig. 3 is the perspective view of the electric cooker of another embodiment；

Fig. 4 is the structural schematic diagram of the electric cooker of another embodiment；

Fig. 5 is a kind of its cross section view of the electric cooker of embodiment and its partial enlarged view.

Specific embodiment

Below by specific embodiment combination attached drawing, invention is further described in detail.Wherein different embodiments Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to The application is better understood.However, those skilled in the art can recognize without lifting an eyebrow, part of feature It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen Please it is relevant it is some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they Relevant operation can be completely understood according to the general technology knowledge of description and this field in specification.

It is formed respectively in addition, feature described in this description, operation or feature can combine in any suitable way Kind embodiment.Meanwhile each step in method description or movement can also can be aobvious and easy according to those skilled in the art institute The mode carry out sequence exchange or adjustment seen.Therefore, the various sequences in the description and the appended drawings are intended merely to clearly describe a certain A embodiment is not meant to be necessary sequence, and wherein some sequentially must comply with unless otherwise indicated.

It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object, Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and It is indirectly connected with (connection).

Referring to FIG. 1, disclosing a kind of electric cooker in one embodiment of the invention, which includes pot body 31 and noninductive line Circle 32, noninductive coil 32 is set in pot body 31 by insulated.

Pot body 31 is for cooked food or heats up water.In one embodiment, pot body 31 is by material thermally conductive and/or resistant to high temperature Insulator made of expecting.

In one embodiment, pot body 31 include bottom and be arranged around bottom with formed hemi-closure space around portion.? In one embodiment, noninductive coil 32 is set in the bottom of pot body 31.In one embodiment, noninductive coil 32 is set to pot body 31 In the portion.In one embodiment, noninductive coil 32 is set in the bottom of pot body 31 and stretches to around portion.

In order to which more safety is provided with insulation and applies in one embodiment on the inner surface of pot body 31 and/or outer surface Layer, for sealing noninductive coil 32.

In order in one embodiment, be provided with heat insulation coating on the outer surface of pot body 31 with better heating effect.

Noninductive coil 32 is for heating.In one embodiment, noninductive coil 32 is that conductor, such as copper, iron, gold and silver etc. are golden Belong to.In one embodiment, the docking end to end of noninductive coil 32, turns to arc-shaped since folding section, i.e. one end of circular arc is The folding section of noninductive coil 32, the other end are the both ends end to end of noninductive coil 32.

In one embodiment, noninductive coil 32 joins end to end to form access, for incuding changing magnetic field to generate electric current To generate heat.For example, the noninductive coil 32 in Fig. 1 is exactly to join end to end to form access, electricity is generated by induction changing magnetic field Stream is to generate heat.

In one embodiment, electric cooker further includes power interface, the power interface be arranged in pot body, noninductive coil 32 with Power interface electrical connection, generates heat for external power supply.In other words, at this time after power interface external power supply, for noninductive Coil 32 is powered, and has electric current in noninductive coil 32, to generate heat.For example, Fig. 2 show the noninductive line when including power interface The example of circle 32 head and the tail of noninductive coil 32 and is not attached at this time, but for being electrically connected with power interface.

Referring to figure 3., Fig. 4 and Fig. 5, the electric cooker of an embodiment can also include electric cooker cover 33 and shell 34, shell Body 34 is for accommodating and placing pot body 31.

In one embodiment, access is formed for incuding changing magnetic field to generate electric current when noninductive coil joins end to end Adstante febre is additionally provided on shell 25 for providing the unit of changing magnetic field to noninductive coil 32.

Since noninductive coil 32 is set in pot body 31 by insulated, thus work as 32 adstante febre of noninductive coil, heat transfer Thermal inertia can be ignored substantially, and the effect of heat transfer is fine；Also, the temperature of 31 inner surface of pot body rises also quickly, can be right Food or water are quickly or transient heating.In addition, since hot sensing efficiency is high, so that not needing too high temperature (example in itself Such as 180 degree), positive thermal resistance effect is unobvious.

Electric current is equal everywhere in noninductive coil 32, unlike being given containing iron pot heating electromagnetic oven, is formed on iron pot If multiple vortex currents；Electric current thus in noninductive coil 32 is equal everywhere, uniform heat distribution.

Since noninductive coil 32 does not have reactance substantially, so that reactive power consumption is very low, the power of cookware can be made very high.

Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple It deduces, deform or replaces.

Claims (9)

1. a kind of electric cooker characterized by comprising

For cooked food or the pot body heated up water；

Electric cooker cover and shell, the shell is for accommodating and placing pot body；

Noninductive coil for heating；

The noninductive coil is set in pot body by insulated.

2. electric cooker as described in claim 1, which is characterized in that the pot body is by material system thermally conductive and/or resistant to high temperature At insulator.

3. electric cooker as claimed in claim 2, which is characterized in that be provided on the inner surface of the pot body and/or outer surface Insulating coating, for sealing the noninductive coil.

4. electric cooker as described in claim 1, which is characterized in that the pot body includes bottom and is arranged around bottom to be formed Hemi-closure space surrounds portion, and the noninductive coil is set in the bottom of pot body.

5. electric cooker as described in claim 1, which is characterized in that the pot body includes bottom and is arranged around bottom to be formed Hemi-closure space surrounds portion, the noninductive coil be set to pot body in the portion.

6. electric cooker as described in claim 1, which is characterized in that the pot body includes bottom and is arranged around bottom to be formed Hemi-closure space surrounds portion, and the noninductive coil is set in the bottom of pot body and stretches to around portion.

7. such as electric cooker described in any one of claims 1 to 6, which is characterized in that the noninductive coil joins end to end to be formed Access is generated heat for incuding changing magnetic field with generating electric current.

8. electric cooker as claimed in claim 7, which is characterized in that be provided on the shell for providing change to noninductive coil The unit in the magnetic field of change.

9. such as electric cooker described in any one of claims 1 to 6, which is characterized in that further include power interface, the power supply connects Mouth is arranged in pot body, and the noninductive coil is electrically connected with power interface, is generated heat for external power supply.