CN109199077A

CN109199077A - Electromagnetic heating pot and preparation method thereof and equipment of cooking

Info

Publication number: CN109199077A
Application number: CN201710542932.2A
Authority: CN
Inventors: 李康; 曹达华; 李兴航; 杨玲; 李洪伟; 屈雪平
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2017-07-05
Filing date: 2017-07-05
Publication date: 2019-01-15

Abstract

The present invention relates to electric heating appliance field, electromagnetic heating pot and preparation method thereof is disclosed and equipment of cooking.The electromagnetic heating pot includes: pot body (1 '), pot body is opened wide in top and the closed hollow tube-shape in bottom, the outer surface of pot body (1 ') bottom includes the overlay area (2 ') and overlay area (3 ') for adhering to magnetic conduction coating, magnetic conduction coating in region (2 ') is extended outwardly with the bottom centre of pot body (1 '), the inner circumferential of magnetic conduction coating in region (3 ') connects with the periphery of the magnetic conduction coating in region (2 '), the thickness of the inner circumferential of magnetic conduction coating in region (3 ') is identical as the thickness of periphery of magnetic conduction coating in region (2 '), it is starting with the periphery of region (2 '), the magnetic conduction coating in region (3 ') reduces with a thickness of along outwardly direction in smooth, the magnetic conduction coating in region (2 ') increases with a thickness of along inward direction in smooth.This pot is used to strengthen the boiling effect of food in pot when food cooking.

Description

Electromagnetic heating pot and preparation method thereof and equipment of cooking

Technical field

The present invention relates to electric heating appliance technical fields, and in particular to electromagnetic heating pot and preparation method thereof and equipment of cooking.

Background technique

The materials such as aluminium alloy, 304 stainless steels, ceramics are very widely used in household electronic products, but these are non magnetic Or the cookware of weak magnetic conductivity material does not have preferable electromagnetic heating function mostly.It can be by preparing one layer in these cookware bottoms The coating of high magnetic permeability, to realize its good electromagnetic heating function.It is thin with Fe, Ni, Co, Fe-Si alloy, 430 stainless steels etc. Micropowder is raw material, magnetic conduction coating prepared by the supersonic cold gas spray technology assisted by the high-speed flow under heated condition Binding force is good, compact structure, porosity is low, electromagnetic heating sensing capability is strong.Non magnetic or weak magnetic cookware can be obviously improved Electromagnetic heating efficiency.

Since the magnetic conduction coating performance that cold spray technique is prepared in aluminum pot bottom is superior, it is expected to part and current aluminium is replaced to close Gold/multiple bottom stainless steel plate and aluminium alloy/stainless steel clad plate preparation cookware, significantly reduce the manufacture of IH heating cookware at This, and also can reach the purpose of similar rapidly and efficiently electromagnetic heating.

However, the electromagnetic heating cookware for being attached with magnetic conduction coating obtained at present by cold spray technique is for food cooking When, however it remains uneven heating is even, the bad problem of boiling effect.

Summary of the invention

The purpose of the invention is to overcome it is of the existing technology by cold spray technique obtain be attached with magnetic conduction apply The electromagnetic heating cookware of layer is used to have the defects that uneven heating is even when food cooking to cause boiling effect bad, provides electromagnetism and adds Hot pot and preparation method thereof and equipment of cooking including the electromagnetic heating pot.Electromagnetic heating pot provided by the invention is used for food cooking When preparing food, the violent boiling effect of food in pot is strengthened, the food cooking in pot is more uniform.

According to the first aspect of the invention, the present invention provides a kind of electromagnetic heating pot, which includes:

Pot body 1, pot body is opened wide in top and the closed hollow tube-shape in bottom, the side wall of the pot body 1 and the pot body 1 The junction of bottom is arc-shaped；

The outer surface of pot body 1 includes the overlay area 2, overlay area 3, overlay area 4 for being attached with magnetic conduction coating, the area of coverage Domain 3 is for connecting the overlay area 2 and overlay area 4, and the magnetic conduction coating in the overlay area 2 is in the bottom of pot body 1 The heart extends outwardly,

Wherein, the periphery of the inner circumferential of the magnetic conduction coating in the overlay area 3 and the magnetic conduction coating in the overlay area 2 Connect, and extends out to the boundary of the overlay area 4 adjacent with overlay area 3, the magnetic conduction coating in the overlay area 3 The thickness of inner circumferential is identical as the thickness of periphery of magnetic conduction coating in overlay area 2, the magnetic conduction coating in the overlay area 3 The thickness of periphery with and overlay area 3 it is adjacent the thickness on boundary of overlay area 4 it is identical,

Be starting with the periphery of overlay area 2, the magnetic conduction coating in the overlay area 2 with a thickness of along inward direction Reduce in smooth, the magnetic conduction coating in the overlay area 3 increases with a thickness of along outwardly direction in smooth；With with the area of coverage The boundary of the adjacent overlay area 4 in domain 3 is starting, and the magnetic conduction coating of the overlay area 4 is in a thickness of along outwardly direction It is smooth to reduce.

According to the second aspect of the invention, the present invention provides a kind of electromagnetic heating pot, which includes:

Pot body 1 ', pot body is opened wide in top and the closed hollow tube-shape in bottom,

The outer surface of 1 ' bottom of pot body includes the overlay area 2 ' for adhering to magnetic conduction coating and the area of coverage of attachment magnetic conduction coating Domain 3 ', the magnetic conduction coating in the overlay area 2 ' are extended outwardly with the bottom centre of pot body 1 ',

Wherein, the magnetic conduction coating in the inner circumferential of the magnetic conduction coating in the overlay area 3 ' and the overlay area 2 ' is outer Week connects, the periphery of the thickness and magnetic conduction coating in overlay area 2 ' of the inner circumferential of the magnetic conduction coating in the overlay area 3 ' Thickness is identical, with the periphery of overlay area 2 ' be starting, the magnetic conduction coating of the overlay area 3 ' with a thickness of along outside side Reduce in smooth, the magnetic conduction coating of the overlay area 2 ' increases with a thickness of along inward direction in smooth.

According to the third aspect of the invention we, the present invention provides a kind of preparation method of electromagnetic heating pot, this method comprises: The partial region cold spraying magnetic metallic powder of the outer surface of pot body 1 is attached with magnetic conduction coating to be formed in the outer surface of pot body 1 Overlay area 2, overlay area 3, overlay area 4, overlay area 3 is for connecting the overlay area 2 and overlay area 4, institute The magnetic conduction coating stated in overlay area 2 is extended outwardly with the bottom centre of pot body 1, the magnetic conduction coating in the overlay area 3 Inner circumferential connects with the periphery of the magnetic conduction coating in the overlay area 2, and extends out to the area of coverage adjacent with overlay area 3 The boundary in domain 4,

Wherein, the condition of the cold spraying makes thickness and the covering of the inner circumferential of the magnetic conduction coating in the overlay area 3 The thickness of the periphery of magnetic conduction coating in region 2 is identical, the thickness of the periphery of the magnetic conduction coating in the overlay area 3 with and cover The thickness on the boundary of the adjacent overlay area 4 of cover area 3 is identical, is starting, the overlay area 2 with the periphery of overlay area 2 In magnetic conduction coating reduce in smooth with a thickness of along inward direction, the magnetic conduction coating in the overlay area 3 with a thickness of Increase along outwardly direction in smooth；It is starting, the overlay area 4 with the boundary of the overlay area 4 adjacent with overlay area 3 Magnetic conduction coating reduce in smooth with a thickness of along outwardly direction.

According to the fourth aspect of the invention, the present invention provides a kind of preparation method of electromagnetic heating pot, this method comprises: The partial region cold spraying magnetic metallic powder of the outer surface of the bottom of pot body 1 ', is formed with the outer surface of the bottom in pot body 1 ' It is attached with the overlay area 2 ' of magnetic conduction coating and the overlay area 3 ' of attachment magnetic conduction coating, the magnetic conduction in the overlay area 2 ' applies Layer is extended outwardly with the bottom centre of pot body 1 ', the inner circumferential of the magnetic conduction coating in the overlay area 3 ' and the overlay area 2 ' In the periphery of magnetic conduction coating connect,

Wherein, the condition of the cold spraying makes thickness and the covering of the inner circumferential of the magnetic conduction coating in the overlay area 3 ' The thickness of the periphery of magnetic conduction coating in region 2 ' is identical, is starting with the periphery of overlay area 2 ', the overlay area 3 ' Magnetic conduction coating reduces with a thickness of along outwardly direction in smooth, the magnetic conduction coating of the overlay area 2 ' with a thickness of along inside Direction increase in smooth.

According to the fifth aspect of the invention, the present invention also provides a kind of electromagnetic heatings prepared by the above method Pot.

According to the sixth aspect of the invention, it cooks equipment the present invention also provides one kind, wherein the equipment of cooking includes above-mentioned Electromagnetic heating pot.

In the present invention, it is controlled by the magnetic conduction coating layer thickness of the different location of the outer surface to pot, makes cookware bottom The thickness of the magnetic conduction coating of portion intermediate region is relatively thick and its fringe region is relatively thin；Or make cookware bottom and side wall The thickness of a certain range of magnetic conduction coating in arc transition region is relatively thick and the magnetic conduction coating in its other neighbouring region Thickness is relatively thin, when so that electromagnetic heating pot provided by the invention being used for food cooking, strengthens the violent boiling of food in pot Effect is risen, keeps the food cooking in pot more uniform.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the electromagnetic heating pot of embodiment provided by the invention；

Fig. 2 is the structural schematic diagram of the electromagnetic heating pot of another embodiment provided by the invention；

Fig. 3 is overlay area 2, the overlay area of a kind of outer surface of the electromagnetic heating pot of embodiment provided by the invention 3 and overlay area 4 schematic cross-section；

Fig. 4 is the bottom outer surface overlay area 2 ' of the electromagnetic heating pot of another embodiment provided by the invention and covers The schematic cross-section of cover area 3 '.

Description of symbols

1, pot body；2, overlay area 2；3, overlay area 3；4, overlay area 4；

1 ', pot body；2 ', overlay area 2 '；3 ', overlay area 3 '.

Specific embodiment

In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower " is typically referred to reference to attached It is upper and lower shown in figure；" inside and outside " refers to the inside and outside of the profile relative to each component itself.

The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more New numberical range, these numberical ranges should be considered as specific open herein.

It is in place of the structure of electromagnetic heating pot provided by the invention and prior art main difference: by the appearance to pot The magnetic conduction coating layer thickness of the different location in face is controlled, and keeps the thickness of the magnetic conduction coating of cookware bottom intermediate region relatively thick And its fringe region is relatively thin；Or make a certain range of magnetic conduction coating in the arc transition region of cookware bottom and side wall Thickness is relatively thick and the thickness of the magnetic conduction coating in other regions that its is neighbouring is relatively thin, so that electromagnetism provided by the invention adds When hot pot is used for food cooking, the violent boiling effect of food in pot is strengthened, keeps the food cooking in pot more uniform.This can Can be because since the magnetic line of force induction zone of thicker magnetic conduction coating is relatively deep, calorific value is also more, and magnetic conduction coating compared with The magnetic line of force induction zone in thin region is relatively shallower, and calorific value is relatively fewer, thus interior at the same time, and magnetic conduction is promoted to apply The corresponding pot inner region in the thicker region of layer generates more heats and bubble, and magnetic conduction coating layer thickness it is relatively thin region it is corresponding The heat and bubble that pot inner region generates are relatively fewer, stronger thermal convection easy to form in this way, to reinforce food in pot Boiling effect, makes the more uniform solid of the food cooking in pot.

It will be appreciated by persons skilled in the art that the bottom and side wall and Sheng of pot body 1 (or pot body 1 ') of the invention The surface that is in contact of dress article is inner surface, and opposite another side is outer surface, i.e., with the discontiguous surface of the article of splendid attire.

It should be noted that the boundary of the overlay area 4 adjacent with overlay area 3 refers to and overlay area 4 and the area of coverage The position that domain 3 connects.

A preferred embodiment of the invention, as shown in Figure 1, the overlay area 4 is formed in the side wall of pot body 1 Outer surface on, the magnetic conduction coating on the outer surface for the bottom that the overlay area 2 is formed in pot body 1, in the overlay area 3 Inner circumferential connect with the periphery of the magnetic conduction coating in the overlay area 2, and the company of the bottom of the side wall along pot body 1 and pot body 1 The place of connecing extends upwardly to the boundary of the overlay area 4 adjacent with overlay area 3.In this embodiment, magnetic conduction coating The more heats of interior zone production and bubble of corresponding pot at thicker arc transition, and the region pair that magnetic conduction coating is relatively thin The heat and bubble that the bottom for the pot answered and other regions generate are less so that at arc transition the interior zone of corresponding pot with Central region forms stronger thermal convection in pot, to strengthen the boiling effect in pot.

According to the present invention, as shown in figure 3, in the overlay area 3 inner circumferential of magnetic conduction coating with a thickness of D₁, the covering The periphery of magnetic conduction coating with a thickness of D in region 3₂, D₁And D₂Value can be applied according to the size and magnetic conduction of specifically used cookware The demand of thickness degree is reasonably selected, generally, D₁/D₂=1-3, in order to obtain preferably boiling effect, preferable case Under, D₁/D₂=1-2, under most preferred case, D₁/D₂=1.

Electromagnetic heating pot according to the present invention, under preferable case, the thickness of the inner circumferential of magnetic conduction coating in the overlay area 3 D₁For 0.1-1mm.

Electromagnetic heating pot according to the present invention, in order to obtain preferably boiling effect, under preferable case, the overlay area 2, overlay area 3, the magnetic conduction coating in overlay area 4 are structure as a whole.That is, the overlay area 2, overlay area 3 and covering Magnetic conduction coating in region 4 is formed as one.

The area of electromagnetic heating pot according to the present invention, the overlay area 2 can be according to specifically used electromagnetic heating pot Size reasonably selected, generally, on the basis of the area of the outer surface of pot body 1, the area of the overlay area 2 is accounted for 20-60%, in order to enable electromagnetic heating pot has preferably boiling effect, under preferable case, with the outer surface of the bottom of pot body 1 Area on the basis of, the area of the overlay area 2 accounts for 50-120%, 60-80% is further preferably accounted for, when the overlay area When 2 area is greater than 100%, the area of the overlay area 2 includes entire area and and the bottom of the bottom outer surface of pot body 1 The area of adjacent partial sidewall outer surface.

Electromagnetic heating pot according to the present invention, it is generally, described in order to further increase the antiseptic property of electromagnetic heating pot The porosity of magnetic conduction coating in overlay area 2, overlay area 3 and overlay area 4 respectively can be the preferable case less than 1% Under, the porosity of the magnetic conduction coating in the overlay area 2, overlay area 3 and overlay area 4 is respectively 0.08-0.5%.

Electromagnetic heating pot according to the present invention, the magnetic conduction coating in the overlay area 2, overlay area 3 and overlay area 4 Can be magnetic conduction coating commonly used in the art, generally, the overlay area 2, overlay area 3 and overlay area 4 magnetic conduction Coating can respectively contain magnetic metallic layers, and under preferable case, the magnetic conduction coating respectively contains selected from Fe, Fe alloy, Ni, Ni One or more of alloy, Co and Co alloy.

Electromagnetic heating pot according to the present invention, the pot body 1 can be formed by material commonly used in the art, for example, The pot body 1 is formed by materials one or more in stainless steel, aluminium, aluminium alloy and titanium alloy.

According to the second aspect of the invention, the present invention also provides a kind of electromagnetic heating pot, which includes:

The thickness of electromagnetic heating pot according to the present invention, the magnetic conduction coating of the intermediate region of the bottom of this pot it is relatively thick and Its fringe region is relatively thin, and center generates more heats and bubble, magnetic conduction in the corresponding pot in the thicker region of magnetic conduction coating The heat and bubble that the relatively thin region of coating corresponding pot inward flange region generates are less, so that center and pot inner peripheral area in pot Domain forms stronger thermal convection, to strengthen the boiling effect in pot.

Electromagnetic heating pot according to the present invention, as shown in figure 4, the thickness of the inner circumferential of the magnetic conduction coating in the overlay area 3 ' Degree is D₃, D₃Value can reasonably be selected according to the size of specifically used cookware and the demand of magnetic conduction coating layer thickness, one As, D₃For 0.1-1mm.

Electromagnetic heating pot according to the present invention, as shown in Fig. 2, in order to obtain preferably boiling effect, under preferable case, institute The magnetic conduction coating stated in overlay area 2 ' and overlay area 3 ' is structure as a whole.That is, the overlay area 2 ' and overlay area 3 ' In magnetic conduction coating be formed as one.

The area of electromagnetic heating pot according to the present invention, the overlay area 2 ' can be according to specifically used electromagnetic heating pot Size reasonably selected, generally, on the basis of the area of the outer surface of the bottom of pot body 1 ', the overlay area 2 ' Area accounts for 20-60%, preferably accounts for 30-50%.

Electromagnetic heating pot according to the present invention, in the overlay area 2 ' and overlay area 3 ' type of magnetic conduction coating with it is upper Text description is consistent, and details are not described herein.

The material selection of electromagnetic heating pot according to the present invention, the pot body 1 ' is consistent with above description, herein not superfluous It states.

According to the third aspect of the invention we, the present invention also provides the preparation method of above-mentioned electromagnetic heating pot, this method packets Include: the partial region cold spraying magnetic metallic powder in the outer surface of pot body 1 is led with being formed to be attached in the outer surface of pot body 1 Overlay area 2, overlay area 3, the overlay area 4 of magnetic coating, overlay area 3 is for connecting the overlay area 2 and the area of coverage Domain 4, the magnetic conduction coating in the overlay area 2 are extended outwardly with the bottom centre of pot body 1, the magnetic conduction in the overlay area 3 The inner circumferential of coating connects with the periphery of the magnetic conduction coating in the overlay area 2, and extends out to and the adjoining of overlay area 3 The boundary of overlay area 4,

The present invention is carried out by the powder feed rate of rate travel or cold spraying to the spray gun in cold spray process Optimization, to change the thickness of the magnetic conduction coating of the outer surface of electromagnetic heating pot.To realize the difference to the outer surface of pot The thickness of the magnetic conduction coating of position is controlled, and when so that electromagnetic heating pot provided by the invention being used for food cooking, is strengthened The violent boiling effect of food, keeps the food cooking in pot more uniform in pot.

According to the present invention it is possible to according to specific cold spray process condition to the regional choice for starting spraying, as long as can be with Form that magnetic conduction coating layer thickness is relatively thick and the relatively thin region of magnetic conduction coating layer thickness.

A kind of embodiment according to the present invention, the condition of the cold spraying include: that the powder feed rate of cold spraying is protected Hold constant, sprayed since overlay area 4, the spray gun that cold spraying uses be moved to overlay area 3 it is adjacent described in covers When the boundary of cover area 4, the rate travel of spray gun starts to lead in continuous downward trend when spray gun is moved in overlay area 2 When the periphery of magnetic coating, the rate travel of spray gun starts in the trend continuously risen.It is thicker that magnetic conduction coating layer thickness is consequently formed Overlay area 3 and magnetic conduction coating relatively thin overlay area 4 and overlay area 2.

In the case of, according to the invention it is preferred to, on the basis of the rate travel of spray gun when forming overlay area 4, formation is covered The minimum movement rate of spray gun and its ratio are 0.1-0.9, further preferably 0.5-0.7 when cover area 3；Form the area of coverage The maximum rate travel of spray gun and its ratio are 1-3, further preferably 1.5-1.8 when domain 2.

According to the present invention, the rate travel for forming spray gun when being attached with the overlay area 4 of magnetic conduction coating can be according to institute It needs the specific thickness of magnetic conduction coating reasonably to be selected, generally, forms spray when being attached with the overlay area 4 of magnetic conduction coating Rifle rate travel can be 0.02-0.5m/s, preferably 0.05-0.3m/s.In order to keep the boiling effect in pot more preferable, further Preferably, the rate travel for forming spray gun when being attached with the overlay area 4 of magnetic conduction coating is at the uniform velocity.

Another embodiment according to the present invention, the condition of the cold spraying include: the shifting for the spray gun that cold spraying uses Dynamic rate remains unchanged, and is sprayed since overlay area 4, and spray gun is moved to the area of coverage adjacent with overlay area 3 When the boundary in domain 4, the powder feed rate of cold spraying starts to gradually increase, when spray gun is moved to magnetic conduction coating in overlay area 2 Periphery when, the powder feed rate of cold spraying starts to be gradually reduced.The thicker overlay area 3 of magnetic conduction coating layer thickness is consequently formed The region 4 and overlay area 2 relatively thin with magnetic conduction coating.

In the case of, according to the invention it is preferred to, the powder feed rate when overlay area 4 of magnetic conduction coating is attached with to be formed On the basis of, forming maximum powder feed rate and its ratio when overlay area 3 is 1.1-1.5, further preferably 1.2- 1.5；Forming the smallest powder feed rate and its ratio when overlay area 2 is 0.4-0.9, further preferably 0.6- 0.75。

According to the present invention, the powder feed rate formed when being attached with the overlay area 4 of magnetic conduction coating can be according to required The specific thickness of magnetic conduction coating is reasonably selected, and generally, forms powder when being attached with the overlay area 4 of magnetic conduction coating Conveying speed can be 5-15kg/h, preferably 6-10kg/h.In order to keep the boiling effect in pot more preferable, it is further preferred that Forming powder feed rate when being attached with the overlay area 4 of magnetic conduction coating is at the uniform velocity.

In the case of, according to the invention it is preferred to, in order to obtain so that boiling effect is more preferable in pot, the condition of the cold spraying is also Include: working gas be air, helium, argon gas and N₂One of or it is a variety of；Spray distance is 20-45mm, preferably 25- 40mm；Gas heating temperature is 600-1000 DEG C, preferably 700-900 DEG C；Spray pressure is 1-5MPa, preferably 2-4MPa.

According to the present invention, the powder that cold spraying uses is magnetic metallic powder, it is preferable that the magnetic metal is Fe, Fe One or more of alloy, Ni, Ni alloy, Co and Co alloy.

According to the present invention, the partial size of the magnetic metallic powder can reasonably be selected according to required coating, and one As, the average grain diameter of the magnetic metallic powder can be 10-50 μm.

Magnetic metallic powder of the invention passes through lance ejection simultaneously part of the high-speed impact to the outer surface of electromagnetic heating pot On region, hits instantaneous portion kinetic energy and be converted to thermal energy, the pure plasticity of magnetic metal particle generation is shear-deformable and is firmly attached to The surface of matrix, whole process magnetic metal particle are not melted, and magnetic conduction coating is consequently formed.

According to the present invention, the material of the pot body 1 is consistent with above description, and details are not described herein.

In the case of, according to the invention it is preferred to, the method also includes before carrying out cold spraying, to the outer surface of pot body 1 Carry out oil removing degreasing.The mode of the oil removing degreasing is to contact the outer surface of pot body 1 with alkaline solution.

In accordance with the present invention it is preferred that the condition of the contact include: contact temperature be 50-90 DEG C, contact it is lasting when Between be 1-10min.

In accordance with the present invention it is preferred that the concentration of the alkaline solution is 10- on the basis of the total amount of the alkaline solution 40 weight %,

In accordance with the present invention it is preferred that the alkaline solution is the aqueous solution of NaOH and/or KOH.

In accordance with the present invention it is preferred that the outer surface of pot body 1 and alkaline solution are carried out in order to avoid influencing subsequent operation After contact, then is neutralized with acid solution, washed and dried with deionized water.The acid solution can be in this field Common solution, such as nitric acid solution and/or hydrochloric acid solution, the concentration of the acid solution, the time contacted with acid solution with And dry temperature and time is referred to prior art progress, details are not described herein.

In the case of, according to the invention it is preferred to, the method also includes before the outer surface to pot body 1 carries out oil removing degreasing It carries out roughening treatment and the diamond dust of 60-100 mesh can be used for example, carrying out roughening treatment by way of sandblasting, so that pot The roughness of the outer surface of body 1 is 3-10 μm.

According to the present invention, D₁With D₂Definition and selection it is same as described above, details are not described herein.

In the case of, according to the invention it is preferred to, the thickness D of the inner circumferential of magnetic conduction coating in the overlay area 3₁For 0.1-1mm.

According to the present invention, in order to enable the boiling effect of electromagnetic heating pot is more preferable, under preferable case, the overlay area 2, Magnetic conduction coating in overlay area 3, overlay area 4 is structure as a whole.

According to the present invention, the selection of the area of the overlay area 2 is consistent with above description, and details are not described herein.

According to the present invention, the porosity of the magnetic conduction coating in the overlay area 2, overlay area 3 and overlay area 4 with it is upper Text description is consistent, and details are not described herein.

According to the fourth aspect of the invention, the present invention also provides a kind of preparation method of electromagnetic heating pot, this method packets Include: the present invention provides a kind of preparation method of electromagnetic heating pot, this method comprises: the part of the outer surface in the bottom of pot body 1 ' Region cold spraying magnetic metallic powder, to form the overlay area 2 ' for being attached with magnetic conduction coating in the outer surface of the bottom of pot body 1 ' With the overlay area 3 ' of attachment magnetic conduction coating, magnetic conduction coating in the overlay area 2 ' is with the bottom centre of pot body 1 ' to extension It stretches, the inner circumferential of the magnetic conduction coating in the overlay area 3 ' connects with the periphery of the magnetic conduction coating in the overlay area 2 ',

A kind of embodiment according to the present invention, the condition of the cold spraying include: that the powder feed rate of cold spraying is protected It holds constant, is sprayed since overlay area 3 ', the spray gun that cold spraying uses is moved to magnetic conduction coating in overlay area 2 ' When periphery, the rate travel of spray gun starts in the trend being continuously reduced.The thicker overlay area of magnetic conduction coating layer thickness is consequently formed 2 ' with the relatively thin region 3 ' of magnetic conduction coating.

In the case of, according to the invention it is preferred to, on the basis of the rate travel of spray gun when forming overlay area 3 ', formation is covered The minimum movement rate of spray gun and its ratio are 0.5-0.9, further preferably 0.5-0.75 when cover area 2 '.

According to the present invention, the rate travel for forming spray gun when being attached with the overlay area 3 ' of magnetic conduction coating can be according to institute It needs the specific thickness of magnetic conduction coating reasonably to be selected, generally, is formed when being attached with the overlay area 3 ' of magnetic conduction coating Spray gun rate travel can be 0.02-0.5m/s, preferably 0.05-0.3m/s.In order to keep the boiling effect in pot more preferable, into one Preferably, the rate travel for forming spray gun when being attached with the overlay area 3 ' of magnetic conduction coating is at the uniform velocity to step.

Another embodiment according to the present invention, the condition of the cold spraying include: that the condition of the cold spraying includes: The rate travel for the spray gun that cold spraying uses remains unchanged, and is sprayed since overlay area 3 ', the spray gun that cold spraying uses When being moved to the periphery of magnetic conduction coating in overlay area 2 ', the powder feed rate of cold spraying starts to gradually increase.It is consequently formed The thicker overlay area 2 ' of magnetic conduction coating layer thickness and the relatively thin region 3 ' of magnetic conduction coating.

In the case of, according to the invention it is preferred to, the powder conveying speed when overlay area 3 ' of magnetic conduction coating is attached with to be formed On the basis of degree, forming maximum powder feed rate and its ratio when overlay area 2 ' is 1-2, further preferably 1.2- 1.5。

According to the present invention, the powder feed rate formed when being attached with the overlay area 3 ' of magnetic conduction coating can be according to required The specific thickness of magnetic conduction coating is reasonably selected, and generally, forms powder when being attached with the overlay area 3 ' of magnetic conduction coating Last conveying speed can be 5-15kg/h, preferably 6-10kg/h.In order to keep the boiling effect in pot more preferable, further preferably Ground, forming powder feed rate when being attached with the overlay area 3 ' of magnetic conduction coating is at the uniform velocity.

According to the present invention, the selection of the average grain diameter of cold spraying uses magnetic metal and magnetic metallic powder with retouch above It states unanimously, details are not described herein.

According to the present invention, the selection of the material of the pot body 1 ' is consistent with above description, and details are not described herein.

In the case of, according to the invention it is preferred to, the method also includes before carrying out cold spraying, to the bottom of pot body 1 ' Outer surface carries out oil removing degreasing.The mode of the oil removing degreasing is to connect the outer surface of the bottom of pot body 1 ' with alkaline solution Touching.

In accordance with the present invention it is preferred that in order to avoid influencing subsequent operation, the outer surface of the bottom of pot body 1 ' and alkalinity is molten After liquid is contacted, then is neutralized with acid solution, washed and dried with deionized water.The acid solution can be ability Common solution in domain, such as nitric acid solution and/or hydrochloric acid solution, the concentration of the acid solution are contacted with acid solution The temperature and time of time and drying is referred to prior art progress, and details are not described herein.

In the case of, according to the invention it is preferred to, the method also includes the outer surfaces in the bottom to pot body 1 ' to carry out oil removing Roughening treatment is carried out before degreasing, for example, carrying out roughening treatment by way of sandblasting, the Buddha's warrior attendant of 60-100 mesh can be used Sand, so that the roughness of the outer surface of the bottom of pot body 1 ' is 3-10 μm.

According to the present invention, D₃Definition and selection it is same as described above, details are not described herein.

According to the present invention, in order to enable the boiling effect of electromagnetic heating pot is more preferable, under preferable case, the overlay area 2 ' It is structure as a whole with the magnetic conduction coating in overlay area 3 '.

According to the present invention, the selection of the area of the overlay area 2 ' is consistent with above description, and details are not described herein.

According to the present invention, the porosity Yu above description one of the magnetic conduction coating in the overlay area 2 ' and overlay area 3 ' It causes, details are not described herein.

According to the fifth aspect of the invention, the present invention also provides electromagnetism heat-conducting pots prepared by the above method.

According to the sixth aspect of the invention, the present invention provides one kind and cooks equipment, including electromagnetic heating pot, and the electromagnetism adds Hot pot is electromagnetic heating pot made from above-mentioned electromagnetic heating pot provided by the invention or above-mentioned preparation method of the invention.

In the case of, according to the invention it is preferred to, the equipment of cooking is electric cooking pot, electric cooker, electric pressure cooking saucepan, frying pan and frying pan In it is one or more.

The present invention will be described in detail by way of examples below.

Using the flat of laser particle size analyzer (being purchased from Xiamen Ke Wang Electronics Co., Ltd., model KW510) measurement powder Equal partial size.

Embodiment 1

(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: the brown steel sand for a) using 60-80 mesh, Carrying out blasting treatment to the outer surface of aluminum pot matrix under the Jet Stream pressure of 0.6MPa makes 6 μm of its surface roughness, then Its fine powder particles remained on surface is blown clean with high pressure draught；B) with the NaOH aqueous solution of 20 weight % at 80 DEG C alkali It washes 2 minutes；C) in the nitric acid solution of 10 weight % and 2 minutes；D) it after being cleaned with deionized water, is dried 10 minutes at 300 DEG C；

(2) partial region of the outer surface for the aluminum pot matrix that the nickel powder that selection partial size is 40 μm obtains step (1) carries out Cold spraying processing, the condition of cold spraying include: that working gas is air, spray pressure 3MPa；900 DEG C of gas heating temperature；Spray Penetrating distance is 40mm；Powder feed rate 5kg/h, as shown in Figure 1, being sprayed since overlay area 4, formation, which is attached with, to be led Spray gun rate travel when the overlay area 4 of magnetic coating is 0.2m/s, when spray gun is moved to the area of coverage adjacent with overlay area 3 When the boundary in domain 4, the rate travel of spray gun starts to be gradually reduced, when spray gun is moved to the periphery of magnetic conduction coating in overlay area 2 When, the rate travel of spray gun starts to be gradually increasing, wherein when forming overlay area 3, the minimum movement rate of spray gun is 0.1m/ S, when forming overlay area 2, the maximum rate travel of spray gun is 0.3m/s.

As shown in figure 3, overlay area 4 is formed on the outer surface of the side wall of pot body 1, overlay area 2 is formed in pot body 1 On the outer surface of bottom, on the basis of the area of the outer surface of the bottom of pot body 1, the area of the overlay area 2 accounts for 65%；It covers The thickness D of the inner circumferential of magnetic conduction coating in cover area 3₁For 0.4mm, in overlay area 3 periphery of magnetic conduction coating with a thickness of D₂For 0.4mm is starting with the periphery of overlay area 2, the magnetic conduction coating in overlay area 2 with a thickness of along inward direction in smooth Reduce, magnetic conduction coating is most thin with a thickness of 0.3mm in overlay area 2；Magnetic conduction coating in overlay area 3 with a thickness of along outside Direction increase in smooth, magnetic conduction coating is most thick with a thickness of 0.5mm in overlay area 3；With the covering adjacent with overlay area 3 The boundary in region 4 is starting, and the magnetic conduction coating in overlay area 4 reduces with a thickness of along outwardly direction in smooth, the area of coverage Magnetic conduction coating is most thin with a thickness of 0.2mm in domain 4.

Embodiment 2

(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: the brown steel sand for a) using 60-80 mesh, Carrying out blasting treatment to the outer surface of aluminum pot matrix under the Jet Stream pressure of 0.6MPa makes 7 μm of its surface roughness, then Its fine powder particles remained on surface is blown clean with high pressure draught；B) with the NaOH aqueous solution of 25 weight % at 85 DEG C alkali It washes 2 minutes；C) in the nitric acid solution of 10 weight % and 2 minutes；D) it after being cleaned with deionized water, is dried 10 minutes at 300 DEG C；

(2) partial region of the outer surface for the aluminum pot matrix that the iron powder that selection partial size is 20 μm obtains step (1) carries out Cold spraying processing, the condition of cold spraying include: that working gas is air, spray pressure 2.5MPa；700 DEG C of gas heating temperature； Spray distance is 35mm；Powder feed rate 6kg/h, as shown in Figure 1, being sprayed since overlay area 4, formation is attached with Spray gun rate travel when the overlay area 4 of magnetic conduction coating is 0.08m/s, is covered when spray gun is moved to what overlay area 3 abutted When the boundary of cover area 4, the rate travel of spray gun starts to be gradually reduced, when spray gun is moved to magnetic conduction coating in overlay area 2 When periphery, the rate travel of spray gun starts to be gradually increasing, wherein when forming overlay area 3, the minimum movement rate of spray gun is 0.05m/s, when forming overlay area 2, the maximum rate travel of spray gun is 0.13m/s.

As shown in figure 3, overlay area 4 is formed on the outer surface of the side wall of pot body 1, overlay area 2 is formed in pot body 1 On the outer surface of bottom, on the basis of the area of the outer surface of the bottom of pot body 1, the area of the overlay area 2 accounts for 80%；It covers The thickness D of the inner circumferential of magnetic conduction coating in cover area 3₁For 0.3mm, in overlay area 3 periphery of magnetic conduction coating with a thickness of D₂For 0.3mm is starting with the periphery of overlay area 2, the magnetic conduction coating in overlay area 2 with a thickness of along inward direction in smooth Reduce, magnetic conduction coating is most thin with a thickness of 0.1mm in overlay area 2；Magnetic conduction coating in overlay area 3 with a thickness of along outside Direction increase in smooth, magnetic conduction coating is most thick with a thickness of 0.4mm in overlay area 3；With the covering adjacent with overlay area 3 The boundary in region 4 is starting, and the magnetic conduction coating in overlay area 4 reduces with a thickness of along outwardly direction in smooth, the area of coverage Magnetic conduction coating is most thin with a thickness of 0.1mm in domain 4.

Embodiment 3

(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: the brown steel sand for a) using 60-80 mesh, Carrying out blasting treatment to the outer surface of aluminum pot matrix under the Jet Stream pressure of 0.6MPa makes 5 μm of its surface roughness, then Its fine powder particles remained on surface is blown clean with high pressure draught；B) with NaOH solution alkali cleaning at 60 DEG C of 35 weight % 2 minutes；C) in the nitric acid solution of 10 weight % and 2 minutes；D) it after being cleaned with deionized water, is dried 10 minutes at 300 DEG C；

(2) partial region of the outer surface for the aluminum pot matrix that the iron powder that selection partial size is 35 μm obtains step (1) carries out Cold spraying processing, the condition of cold spraying include: that working gas is air, spray pressure 2.5MPa；800 DEG C of gas heating temperature； Spray distance is 20mm；Powder feed rate 10kg/h forms attachment as shown in Figure 1, being sprayed since overlay area 4 Having the spray gun rate travel when overlay area 4 of magnetic conduction coating is 0.1m/s, is covered when spray gun is moved to what overlay area 3 abutted When the boundary of cover area 4, the rate travel of spray gun starts to be gradually reduced, when spray gun is moved to magnetic conduction coating in overlay area 2 When periphery, the rate travel of spray gun starts to be gradually increasing, wherein when forming overlay area 3, the minimum movement rate of spray gun is 0.07m/s, when forming overlay area 2, the maximum rate travel of spray gun is 0.18m/s.

As shown in figure 3, overlay area 4 is formed on the outer surface of the side wall of pot body 1, overlay area 2 is formed in pot body 1 On the outer surface of bottom, on the basis of the area of the outer surface of the bottom of pot body 1, the area of the overlay area 2 accounts for 70%；It covers The thickness D of the inner circumferential of magnetic conduction coating in cover area 3₁For 0.5mm, in overlay area 3 periphery of magnetic conduction coating with a thickness of D₂For 0.5mm is starting with the periphery of overlay area 2, the magnetic conduction coating in overlay area 2 with a thickness of along inward direction in smooth Reduce, magnetic conduction coating is most thin with a thickness of 0.4mm in overlay area 2；Magnetic conduction coating in overlay area 3 with a thickness of along outside Direction increase in smooth, magnetic conduction coating is most thick with a thickness of 0.6mm in overlay area 3；With the covering adjacent with overlay area 3 The boundary in region 4 is starting, and the magnetic conduction coating in overlay area 4 reduces with a thickness of along outwardly direction in smooth, the area of coverage Magnetic conduction coating is most thin with a thickness of 0.3mm in domain 4.

Embodiment 4

(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: the brown steel sand for a) using 60-80 mesh, Carrying out blasting treatment to the outer surface of aluminum pot matrix under the Jet Stream pressure of 0.8MPa makes 6 μm of its surface roughness, then Its fine powder particles remained on surface is blown clean with high pressure draught；B) with NaOH solution alkali cleaning at 50 DEG C of 20 weight % 2 minutes；C) in the hydrochloric acid solution of 10 weight % and 2 minutes；D) it after being cleaned with deionized water, is dried 10 minutes at 300 DEG C；

(2) partial region of the outer surface for the aluminum pot matrix that the iron powder that selection partial size is 40 μm obtains step (1) carries out Cold spraying processing, the condition of cold spraying include: that working gas is air, spray pressure 2.5MPa；700 DEG C of gas heating temperature； Spray distance is 40mm；Spray gun rate travel is 0.05m/s；As shown in Figure 1, being sprayed since overlay area 4, formed attached When having the overlay area 4 of magnetic conduction coating, powder feed rate 7kg/h, when spray gun is moved to and overlay area 3 is adjacent covers When the boundary of cover area 4, powder feed rate starts to be gradually reduced, when spray gun is moved to the outer of magnetic conduction coating in overlay area 2 Zhou Shi, powder feed rate start to be gradually increasing, wherein when forming overlay area 3, maximum powder feed rate is 9kg/ H, when forming overlay area 2, the smallest powder speed is 5kg/h.

As shown in figure 3, overlay area 4 is formed on the outer surface of the side wall of pot body 1, overlay area 2 is formed in pot body 1 On the outer surface of bottom, on the basis of the area of the outer surface of the bottom of pot body 1, the area of the overlay area 2 accounts for 65%；It covers The thickness D of the inner circumferential of magnetic conduction coating in cover area 3₁For 0.2mm, in overlay area 3 periphery of magnetic conduction coating with a thickness of D₂For 0.2mm is starting with the periphery of overlay area 2, the magnetic conduction coating in overlay area 2 with a thickness of along inward direction in smooth Reduce, magnetic conduction coating is most thin with a thickness of 0.1mm in overlay area 2；Magnetic conduction coating in overlay area 3 with a thickness of along outside Direction increase in smooth, magnetic conduction coating is most thick with a thickness of 0.4mm in overlay area 3；With the covering adjacent with overlay area 3 The boundary in region 4 is starting, and the magnetic conduction coating in overlay area 4 reduces with a thickness of along outwardly direction in smooth, the area of coverage Magnetic conduction coating is most thin with a thickness of 0.1mm in domain 4.

Embodiment 5

(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: the brown steel sand for a) using 60-80 mesh, Carrying out blasting treatment to the outer surface of aluminum pot matrix under the Jet Stream pressure of 0.6MPa makes 5 μm of its surface roughness, then Its fine powder particles remained on surface is blown clean with high pressure draught；B) with NaOH solution alkali cleaning at 50 DEG C of 20 weight % 2 minutes；C) in the nitric acid solution of 10 weight % and 2 minutes；D) it after being cleaned with deionized water, is dried 10 minutes at 300 DEG C；

(2) partial region of the bottom outer surface for the aluminum pot matrix that the iron powder that selection partial size is 25 μm obtains step (1) Cold spraying processing is carried out, the condition of cold spraying includes: that working gas is air, sprays pressure 2.5MPa；Gas heating temperature 850 ℃；Spray distance is 30mm；Spray gun rate travel is 0.06m/s；As shown in Figure 1, being sprayed since overlay area 4, shape When at the overlay area 4 for being attached with magnetic conduction coating, powder feed rate 8kg/h, when spray gun is moved to and the adjoining of overlay area 3 Overlay area 4 boundary when, powder feed rate starts to be gradually reduced, when spray gun is moved to magnetic conduction coating in overlay area 2 Periphery when, powder feed rate starts to be gradually increasing, wherein when forming overlay area 3, maximum powder feed rate is 10kg/h, when forming overlay area 2, the smallest powder speed is 5kg/h.

As shown in figure 3, overlay area 4 is formed on the outer surface of the side wall of pot body 1, overlay area 2 is formed in pot body 1 On the outer surface of bottom, on the basis of the area of the outer surface of the bottom of pot body 1, the area of the overlay area 2 accounts for 70%；It covers The thickness D of the inner circumferential of magnetic conduction coating in cover area 3₁For 0.5mm, in overlay area 3 periphery of magnetic conduction coating with a thickness of D₂For 0.5mm is starting with the periphery of overlay area 2, the magnetic conduction coating in overlay area 2 with a thickness of along inward direction in smooth Reduce, magnetic conduction coating is most thin with a thickness of 0.4mm in overlay area 2；Magnetic conduction coating in overlay area 3 with a thickness of along outside Direction increase in smooth, magnetic conduction coating is most thick with a thickness of 0.6mm in overlay area 3；With the covering adjacent with overlay area 3 The boundary in region 4 is starting, and the magnetic conduction coating in overlay area 4 reduces with a thickness of along outwardly direction in smooth, the area of coverage Magnetic conduction coating is most thin with a thickness of 0.4mm in domain 4.

Embodiment 6

(1) aluminum pot matrix is pre-processed, wherein pretreated method includes: the brown steel sand for a) using 60-80 mesh, Carrying out blasting treatment to the outer surface of aluminum pot matrix under the Jet Stream pressure of 0.6MPa makes 5 μm of its surface roughness, then Its fine powder particles remained on surface is blown clean with high pressure draught；B) with NaOH solution alkali cleaning at 70 DEG C of 35 weight % 2 minutes；C) in the nitric acid solution of 10 weight % and 2 minutes；D) it after being cleaned with deionized water, is dried 12 minutes at 300 DEG C；

(2) partial region of the outer surface for the aluminum pot matrix that the iron powder that selection partial size is 30 μm obtains step (1) carries out Cold spraying processing, the condition of cold spraying include: that working gas is air, spray pressure 2.5MPa；900 DEG C of gas heating temperature； Spray distance is 35mm；Spray gun rate travel is 0.07m/s；As shown in Figure 1, being sprayed since overlay area 4, formed attached Powder feed rate when having an overlay area 4 of magnetic conduction coating be 9kg/h, when spray gun is moved to and overlay area 3 is adjacent When the boundary of overlay area 4, powder feed rate starts to be gradually reduced, when spray gun is moved to magnetic conduction coating in overlay area 2 When periphery, powder feed rate starts to be gradually increasing, wherein when forming overlay area 3, maximum powder feed rate is 12kg/h, when forming overlay area 2, the smallest powder speed is 6kg/h.

Embodiment 7

Aluminum pot matrix is pre-processed using method same as Example 1, unlike, in step (2), select grain The partial region of the bottom outer surface for the aluminum pot matrix that the nickel powder that diameter is 40 μm obtains step (1) carries out cold spraying processing, cold The condition of spraying includes: that working gas is air, sprays pressure 2.5MPa；900 DEG C of gas heating temperature；Spray distance is 40mm；Powder feed rate 6kg/h, as shown in Fig. 2, being sprayed since overlay area 3 ', formation is attached with magnetic conduction coating Overlay area 3 ' when spray gun rate travel be 0.06m/s, when spray gun is moved to the outer of the magnetic conduction coating in overlay area 2 ' Zhou Shi, spray gun rate travel start to be continuously reduced, and when forming overlay area 2 ', the minimum movement rate of spray gun is 0.03m/s.

As shown in figure 4, on the outer surface for the bottom that overlay area 2 ' and overlay area 3 ' are formed in pot body 1 ', with pot body 1 ' Bottom outer surface area on the basis of, the area of the overlay area 2 ' accounts for 35%, the magnetic conduction coating in overlay area 3 ' Inner circumferential thickness D₃Be starting with the periphery of overlay area 2 ' for 0.3mm, the magnetic conduction coating of overlay area 3 ' with a thickness of edge Outwardly direction reduces in smooth, and magnetic conduction coating is most thin with a thickness of 0.2mm in overlay area 3 '；The magnetic conduction of overlay area 2 ' applies Layer increases with a thickness of along inward direction in smooth, and magnetic conduction coating is most thick with a thickness of 0.4mm in overlay area 2 '.

Embodiment 8

Aluminum pot matrix is pre-processed using method same as Example 2, unlike, in step (2), select grain The partial region of the bottom outer surface for the aluminum pot matrix that the iron powder that diameter is 20 μm obtains step (1) carries out cold spraying processing, cold The condition of spraying includes: that working gas is air, sprays pressure 2.5MPa；700 DEG C of gas heating temperature；Spray distance is 35mm；Powder feed rate 7kg/h, as shown in Fig. 2, being sprayed since overlay area 3 ', formation is attached with magnetic conduction coating Overlay area 3 ' when spray gun rate travel be 0.07m/s, when spray gun is moved to the outer of the magnetic conduction coating in overlay area 2 ' Zhou Shi, spray gun rate travel start to be continuously reduced, and when forming overlay area 2 ', the minimum movement rate of spray gun is 0.05m/s.

As shown in figure 4, on the outer surface for the bottom that overlay area 2 ' and overlay area 3 ' are formed in pot body 1 ', with pot body 1 ' Bottom outer surface area on the basis of, the area of the overlay area 2 ' accounts for 40%, the magnetic conduction coating in overlay area 3 ' Inner circumferential thickness D₃Be starting with the periphery of overlay area 2 ' for 0.4mm, the magnetic conduction coating of overlay area 3 ' with a thickness of edge Outwardly direction reduces in smooth, and magnetic conduction coating is most thin with a thickness of 0.3mm in overlay area 3 '；The magnetic conduction of overlay area 2 ' applies Layer increases with a thickness of along inward direction in smooth, and magnetic conduction coating is most thick with a thickness of 0.5mm in overlay area 2 '.

Embodiment 9

Aluminum pot matrix is pre-processed using method same as Example 3, unlike, in step (2), select grain The partial region of the bottom outer surface for the aluminum pot matrix that the iron powder that diameter is 35 μm obtains step (1) carries out cold spraying processing, cold The condition of spraying includes: that working gas is air, sprays pressure 2.5MPa；800 DEG C of gas heating temperature；Spray distance is 20mm；Powder feed rate 10kg/h, as shown in Fig. 2, being sprayed since overlay area 3 ', formation is attached with magnetic conduction coating Overlay area 3 ' when spray gun rate travel be 0.08m/s, when spray gun is moved to the outer of the magnetic conduction coating in overlay area 2 ' Zhou Shi, spray gun rate travel start to be continuously reduced, and when forming overlay area 2 ', the minimum movement rate of spray gun is 0.06m/s.

As shown in figure 4, on the outer surface for the bottom that overlay area 2 ' and overlay area 3 ' are formed in pot body 1 ', with pot body 1 ' Bottom outer surface area on the basis of, the area of the overlay area 2 ' accounts for 50%, the magnetic conduction coating in overlay area 3 ' Inner circumferential thickness D₃Be starting with the periphery of overlay area 2 ' for 0.3mm, the magnetic conduction coating of overlay area 3 ' with a thickness of edge Outwardly direction reduces in smooth, and magnetic conduction coating is most thin with a thickness of 0.2mm in overlay area 3 '；The magnetic conduction of overlay area 2 ' applies Layer increases with a thickness of along inward direction in smooth, and magnetic conduction coating is most thick with a thickness of 0.4mm in overlay area 2 '.

Embodiment 10

Aluminum pot matrix is pre-processed using method same as Example 4, unlike, in step (2), select grain The partial region of the bottom outer surface for the aluminum pot matrix that the iron powder that diameter is 40 μm obtains step (1) carries out cold spraying processing, cold The condition of spraying includes: that working gas is air, sprays pressure 2.5MPa；700 DEG C of gas heating temperature；Spray distance is 40mm；Spray gun rate travel is 0.05m/s；As shown in Fig. 2, being sprayed since overlay area 3 ', formation is attached with magnetic conduction When the overlay area 3 ' of coating, powder feed rate 7kg/h, when spray gun is moved to the outer of the magnetic conduction coating in overlay area 2 ' Zhou Shi, powder feed rate start to be gradually increasing, and when forming overlay area 2 ', maximum powder feed rate is 9kg/h.

As shown in figure 4, on the outer surface for the bottom that overlay area 2 ' and overlay area 3 ' are formed in pot body 1 ', with pot body 1 ' Bottom outer surface area on the basis of, the area of the overlay area 2 ' accounts for 30%, the magnetic conduction coating in overlay area 3 ' Inner circumferential thickness D₃Be starting with the periphery of overlay area 2 ' for 0.4mm, the magnetic conduction coating of overlay area 3 ' with a thickness of edge Outwardly direction reduces in smooth, and magnetic conduction coating is most thin with a thickness of 0.3mm in overlay area 3 '；The magnetic conduction of overlay area 2 ' applies Layer increases with a thickness of along inward direction in smooth, and magnetic conduction coating is most thick with a thickness of 0.5mm in overlay area 2 '.

Embodiment 11

Aluminum pot matrix is pre-processed using method same as Example 5, unlike, in step (2), select grain The partial region of the bottom outer surface for the aluminum pot matrix that the iron powder that diameter is 25 μm obtains step (1) carries out cold spraying processing, cold The condition of spraying includes: that working gas is air, sprays pressure 2.5MPa；750 DEG C of gas heating temperature；Spray distance is 40mm；Spray gun rate travel is 0.05m/s；As shown in Fig. 2, being sprayed since overlay area 3 ', formation is attached with magnetic conduction When the overlay area 3 ' of coating, powder feed rate 6kg/h, when spray gun is moved to the outer of the magnetic conduction coating in overlay area 2 ' Zhou Shi, powder feed rate start to be gradually increasing, and when forming overlay area 2 ', maximum powder feed rate is 8kg/h.

As shown in figure 4, on the outer surface for the bottom that overlay area 2 ' and overlay area 3 ' are formed in pot body 1 ', with pot body 1 ' Bottom outer surface area on the basis of, the area of the overlay area 2 ' accounts for 45%, the magnetic conduction coating in overlay area 3 ' Inner circumferential thickness D₃Be starting with the periphery of overlay area 2 ' for 0.3mm, the magnetic conduction coating of overlay area 3 ' with a thickness of edge Outwardly direction reduces in smooth, and magnetic conduction coating is most thin with a thickness of 0.2mm in overlay area 3 '；The magnetic conduction of overlay area 2 ' applies Layer increases with a thickness of along inward direction in smooth, and magnetic conduction coating is most thick with a thickness of 0.4mm in overlay area 2 '.

Embodiment 12

Aluminum pot matrix is pre-processed using method same as Example 6, unlike, in step (2), select grain The partial region of the bottom outer surface for the aluminum pot matrix that the iron powder that diameter is 30 μm obtains step (1) carries out cold spraying processing, cold The condition of spraying includes: that working gas is air, sprays pressure 2.5MPa；850 DEG C of gas heating temperature；Spray distance is 40mm；Spray gun rate travel is 0.06m/s；As shown in Fig. 2, being sprayed since overlay area 3 ', formation is attached with magnetic conduction When the overlay area 3 ' of coating, powder feed rate 8kg/h, when spray gun is moved to the outer of the magnetic conduction coating in overlay area 2 ' Zhou Shi, powder feed rate start to be gradually increasing, and when forming overlay area 2 ', maximum powder feed rate is 12kg/h.

As shown in figure 4, on the outer surface for the bottom that overlay area 2 ' and overlay area 3 ' are formed in pot body 1 ', with pot body 1 ' Bottom outer surface area on the basis of, the area of the overlay area 2 ' accounts for 48%, the magnetic conduction coating in overlay area 3 ' Inner circumferential thickness D₃Be starting with the periphery of overlay area 2 ' for 0.4mm, the magnetic conduction coating of overlay area 3 ' with a thickness of edge Outwardly direction reduces in smooth, and magnetic conduction coating is most thin with a thickness of 0.2mm in overlay area 3 '；The magnetic conduction of overlay area 2 ' applies Layer increases with a thickness of along inward direction in smooth, and magnetic conduction coating is most thick with a thickness of 0.5mm in overlay area 2 '.

Comparative example 1

The preparation of electromagnetic heating pot is carried out using the method for embodiment 1, is attached with magnetic conduction coating the difference is that being formed Spray gun rate travel when overlay area 2, overlay area 3 and overlay area 4 is 0.2m/s.

Comparative example 2

The preparation of electromagnetic heating pot is carried out using the method for embodiment 4, is attached with magnetic conduction coating the difference is that being formed When overlay area 2, overlay area 3 and overlay area 4, powder feed rate is 7kg/h.

Embodiment 13

The preparation of electromagnetic heating pot is carried out using the method for embodiment 1, the difference is that spray when forming overlay area 2 Rifle rate travel is 1m/s.

Embodiment 14

The preparation of electromagnetic heating pot is carried out using the method for embodiment 4, the difference is that minimum when forming overlay area 2 Powder feed rate be 3kg/h.

Test case

1, the rectangular optical instrument in Shanghai (coating surface hardness: is purchased from using Vickers according to GB/T 9790-1988 Co., Ltd, model HX-1000) measurement cold spray layer Vickers hardness.Load is 100gf, load time 15s, as a result It is shown in Table 1.

2, coating porosity coating porosity: is measured according to People's Republic of China (PRC) machinery industry standard JB/T7509-94. It the results are shown in Table 1.

3, electromagnetic heating performance: using the maximum power value (W) of the power instrument test cookware heating of agilent company production. Interior pot is placed on electromagnetic oven and is heated, input power 1500W.

4, the measurement of boiling time: above-described embodiment 1-14 and comparative example 1-2 that matrix thickness is the 3mm aluminium prepared are closed The water of placement 3L in Jin Leng spray magnetic conduction pot, boiled to 100 DEG C, and water conservation is held after boiling 3min, stopping heating immediately, subsequent measurement Boiling water is denoted as boiling time from the time without any boiling phenomenon is boiled in pot.

Table 1

Can be seen that by the result of table 1 adds electromagnetism provided by the invention using specific spray mode of the invention When hot pot is used for food cooking, the violent boiling effect of food in pot is strengthened, keeps the food cooking in pot more uniform.

The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to Protection scope of the present invention.

Claims

1. a kind of electromagnetic heating pot, the electromagnetic heating pot include:

Pot body (1), pot body is opened wide in top and the closed hollow tube-shape in bottom, the side wall of the pot body (1) and the pot body (1) Bottom junction be it is arc-shaped；

The outer surface of pot body (1) includes the overlay area (2), overlay area (3), overlay area (4) for being attached with magnetic conduction coating, is covered Cover area (3) is for connecting the overlay area (2) and overlay area (4), and the magnetic conduction coating in the overlay area (2) is with pot The bottom centre of body (1) extends outwardly,

It is characterized in that, the magnetic conduction coating in the inner circumferential of the magnetic conduction coating in the overlay area (3) and the overlay area (2) Periphery connect, and the boundary of the overlay area (4) adjacent with overlay area (3) is extended out to, in the overlay area (3) Magnetic conduction coating inner circumferential thickness it is identical as the thickness of periphery of magnetic conduction coating in overlay area (2), the overlay area (3) thickness of the periphery of the magnetic conduction coating in and overlay area (3) it is adjacent the thickness on boundary of overlay area (4) it is identical,

Be starting with the periphery of overlay area (2), the magnetic conduction coating in the overlay area (2) with a thickness of along inward direction Reduce in smooth, the magnetic conduction coating in the overlay area (3) increases with a thickness of along outwardly direction in smooth；With with covering The boundary of the adjacent overlay area (4) in region (3) is starting, the magnetic conduction coating of the overlay area (4) with a thickness of along outside Direction reduce in smooth.

2. a kind of electromagnetic heating pot, the electromagnetic heating pot include:

Pot body (1 '), pot body is opened wide in top and the closed hollow tube-shape in bottom,

The outer surface of pot body (1 ') bottom includes the overlay area (2 ') for adhering to magnetic conduction coating and the area of coverage for adhering to magnetic conduction coating Domain (3 '), the magnetic conduction coating in the overlay area (2 ') are extended outwardly with the bottom centre of pot body (1 '),

It is characterized in that, the magnetic conduction in the inner circumferential of the magnetic conduction coating in the overlay area (3 ') and the overlay area (2 ') applies The periphery of layer connects, and the thickness of the inner circumferential of the magnetic conduction coating in the overlay area (3 ') and the magnetic conduction in overlay area (2 ') apply The thickness of the periphery of layer is identical, is starting, the thickness of the magnetic conduction coating of the overlay area (3 ') with the periphery of overlay area (2 ') Degree to reduce along outwardly direction in smooth, the magnetic conduction coating of the overlay area (2 ') with a thickness of along inward direction in flat It is sliding to increase.

3. electromagnetic heating pot according to claim 1, wherein the overlay area (4) is formed in the outer of the side wall of pot body (1) On surface, on the outer surface for the bottom that the overlay area (2) is formed in pot body (1), the magnetic conduction in the overlay area (3) is applied The inner circumferential of layer connects with the periphery of the magnetic conduction coating in the overlay area (2), and the side wall along pot body (1) and pot body (1) The junction of bottom extends upwardly to the boundary of the overlay area (4) adjacent with overlay area (3).

4. electromagnetic heating pot according to claim 1, wherein the thickness of the inner circumferential of magnetic conduction coating in the overlay area (3) Degree is D₁, the periphery of magnetic conduction coating with a thickness of D in the overlay area (3)₂, D₁/D₂=1-3,

Preferably, in the overlay area (3) inner circumferential of magnetic conduction coating thickness D₁For 0.1-1mm.

5. electromagnetic heating pot according to claim 2, wherein the inner circumferential of the magnetic conduction coating in the overlay area (3 ') Thickness D₃For 0.1-1mm.

6. electromagnetic heating pot according to claim 1, wherein the overlay area (2), overlay area (3), overlay area (4) the magnetic conduction coating in is structure as a whole.

7. electromagnetic heating pot according to claim 2, wherein leading in the overlay area (2 ') and overlay area (3 ') Magnetic coating is structure as a whole.

8. electromagnetic heating pot according to claim 1, wherein described to cover on the basis of the area of the outer surface of pot body (1) The area of cover area (2) accounts for 20-60%,

Preferably, on the basis of the area of the outer surface of the bottom of pot body (1), the area of the overlay area (2) accounts for 50- 120%.

9. electromagnetic heating pot according to claim 2, wherein using the area of the outer surface of the bottom of pot body (1 ') as base The area of standard, the overlay area (2 ') accounts for 20-60%.

10. electromagnetic heating pot described in any one of -9 according to claim 1, wherein the magnetic conduction in the overlay area applies The porosity of layer is respectively less than 1%, it is preferable that the porosity of the magnetic conduction coating in the overlay area is respectively 0.08- 0.5%.

11. electromagnetic heating pot described in any one of -10 according to claim 1, wherein the magnetic conduction in the overlay area applies Layer respectively contains magnetic metallic layers,

Preferably, the magnetic conduction coating in the overlay area respectively contains selected from Fe, Fe alloy, Ni, Ni alloy, Co and Co alloy One or more of.

12. electromagnetic heating pot according to claim 1 or 2, wherein the pot body by selected from stainless steel, aluminium, aluminium alloy and One or more materials are formed in titanium alloy.

13. a kind of preparation method of electromagnetic heating pot, this method comprises: the partial region cold spraying in the outer surface of pot body (1) Magnetic metallic powder, with the outer surface of pot body (1) formed be attached with the overlay area (2) of magnetic conduction coating, overlay area (3), Overlay area (4), overlay area (3) for connecting the overlay area (2) and overlay area (4), in the overlay area (2) Magnetic conduction coating extended outwardly with the bottom centre of pot body (1), the inner circumferential of the magnetic conduction coating in the overlay area (3) with it is described The periphery of magnetic conduction coating in overlay area (2) connects, and extends out to the overlay area (4) adjacent with overlay area (3) Boundary,

Wherein, the condition of the cold spraying makes the thickness and the area of coverage of the inner circumferential of the magnetic conduction coating in the overlay area (3) The thickness of the periphery of magnetic conduction coating in domain (2) is identical, the thickness of the periphery of the magnetic conduction coating in the overlay area (3) with and The thickness on the boundary of the adjacent overlay area (4) in overlay area (3) is identical, is starting with the periphery of overlay area (2), described to cover Magnetic conduction coating in cover area (2) reduces with a thickness of along inward direction in smooth, and the magnetic conduction in the overlay area (3) applies Layer increases with a thickness of along outwardly direction in smooth；Boundary with the overlay area (4) adjacent with overlay area (3) is Begin, the magnetic conduction coating of the overlay area (4) reduces with a thickness of along outwardly direction in smooth.

14. a kind of preparation method of electromagnetic heating pot, this method comprises: the partial region of the outer surface in the bottom of pot body (1 ') Cold spraying magnetic metallic powder, to form the overlay area (2 ') for being attached with magnetic conduction coating in the outer surface of the bottom of pot body (1 ') With the overlay area (3 ') of attachment magnetic conduction coating, the magnetic conduction coating in the overlay area (2 ') is with the bottom centre of pot body (1 ') Extend outwardly, outside the magnetic conduction coating in the inner circumferential of the magnetic conduction coating in the overlay area (3 ') and the overlay area (2 ') Week connects,

Wherein, the condition of the cold spraying makes the thickness and the area of coverage of the inner circumferential of the magnetic conduction coating in the overlay area (3 ') The thickness of the periphery of magnetic conduction coating in domain (2 ') is identical, is starting, the overlay area with the periphery of overlay area (2 ') The magnetic conduction coating of (3 ') reduces with a thickness of along outwardly direction in smooth, the thickness of the magnetic conduction coating of the overlay area (2 ') To increase along inward direction in smooth.

15. according to the method for claim 13, wherein the condition of the cold spraying includes: the powder conveying speed of cold spraying Degree remains unchanged, and is sprayed since overlay area (4), and the spray gun that cold spraying uses is moved to adjacent with overlay area (3) The overlay area (4) boundary when, the rate travel of spray gun starts in continuous downward trend, when spray gun is moved to covering In region (2) when the periphery of magnetic conduction coating, the rate travel of spray gun starts in the trend continuously risen.

16. according to the method for claim 15, wherein using the rate travel of spray gun when forming overlay area (4) as base Standard, the minimum movement rate of spray gun and its ratio are 0.1-0.9 when forming overlay area (3), are sprayed when forming overlay area (2) The maximum rate travel of rifle and its ratio are 1-3,

Preferably, the rate travel of spray gun when forming overlay area (4) is 0.02-0.5m/s；It is covered it is further preferred that being formed The rate travel of spray gun when cover area (4) is at the uniform velocity.

17. according to the method for claim 13, wherein the condition of the cold spraying includes: the spray gun that cold spraying uses Rate travel remains unchanged, and is sprayed since overlay area (4), and spray gun is moved to described with overlay area (3) adjoining When the boundary of overlay area (4), the powder feed rate of cold spraying starts to gradually increase, when spray gun is moved to overlay area (2) When the periphery of middle magnetic conduction coating, the powder feed rate of cold spraying starts to be gradually reduced.

18. according to the method for claim 17, wherein on the basis of powder feed rate when forming overlay area (4), Forming maximum powder feed rate and its ratio when overlay area (3) is 1.1-1.5, is formed minimum when overlay area (2) Powder feed rate and its ratio be 0.4-0.9,

Preferably, powder feed rate when forming overlay area (4) is 5-15kg/h；It is further preferred that forming the area of coverage Powder feed rate when domain (4) is at the uniform velocity.

19. according to the method for claim 14, wherein the condition of the cold spraying includes: the powder conveying speed of cold spraying Degree remains unchanged, and is sprayed since overlay area (3 '), and the spray gun that cold spraying uses is moved in overlay area (2 ') When the periphery of magnetic conduction coating, the rate travel of spray gun starts in the trend being continuously reduced.

20. according to the method for claim 19, wherein using the rate travel of spray gun when forming overlay area (3 ') as base Standard, the minimum movement rate of spray gun and its ratio are 0.5-0.9 when forming overlay area (2 '),

Preferably, the rate travel of spray gun when forming overlay area (3 ') is 0.02-0.5m/s；It is further preferred that being formed The rate travel of spray gun when overlay area (3 ') is at the uniform velocity.

21. according to the method for claim 14, wherein the condition of the cold spraying includes: the spray gun that cold spraying uses Rate travel remains unchanged, and is sprayed since overlay area (3 '), and the spray gun that cold spraying uses is moved to overlay area In (2 ') when the periphery of magnetic conduction coating, the powder feed rate of cold spraying starts to gradually increase.

22. according to the method for claim 21, wherein using powder feed rate when forming overlay area (3 ') as base Standard, forming maximum powder feed rate and its ratio when transitional region (2 ') is 1-2,

Preferably, powder feed rate when forming overlay area (3 ') is 5-15kg/h；It is further preferred that forming the area of coverage Powder feed rate when domain (3 ') is at the uniform velocity.

23. method described in any one of 3-22 according to claim 1, wherein the condition of the cold spraying processing further include: Working gas is air, helium, argon gas and N₂One of or it is a variety of；Spray distance is 20-45mm, preferably 25-40mm；Gas Body heating temperature is 600-1000 DEG C, preferably 700-900 DEG C；Spray pressure is 1-5MPa, preferably 2-4MPa.

24. method described in any one of 3-22 according to claim 1, wherein the magnetic metal be Fe, Fe alloy, Ni, One or more of Ni alloy, Co and Co alloy,

Preferably, the average grain diameter of the magnetic metallic powder is 10-50 μm.

25. method described in any one of 3-22 according to claim 1, wherein the pot body is by being selected from stainless steel, aluminium, aluminium One or more materials are formed in alloy and titanium alloy.

26. according to the method for claim 13, wherein in the overlay area (3) inner circumferential of magnetic conduction coating with a thickness of D₁, the periphery of magnetic conduction coating with a thickness of D in the overlay area (3)₂, D₁/D₂=1-3, it is preferable that the overlay area (3) The thickness D of the inner circumferential of middle magnetic conduction coating₁For 0.1-1mm.

27. according to the method for claim 14, wherein the thickness of the inner circumferential of the magnetic conduction coating in the overlay area (3 ') D₃For 0.1-1mm.

28. the electromagnetic heating pot that the method as described in any one of claim 13-27 is prepared.

The equipment 29. one kind is cooked, which includes electromagnetic heating pot, which is characterized in that the electromagnetic heating pot is right It is required that electromagnetic heating pot described in electromagnetic heating pot described in any one of 1-12 or claim 28.

30. equipment according to claim 29 of cooking, wherein the equipment of cooking is electric cooking pot, electric cooker, Voltage force It is one or more in pot, frying pan and frying pan.