CN207604828U - Cookware and cooking equipment - Google Patents

Abstract

The utility model provides a kind of cookware and cooking equipment, cookware include：Wall；Composite base, is set to the bottom end of wall, and the bottom of composite base is configured to the structure being recessed to pot, wherein the recessed depth h of maximum and the diameter d of composite base bottom of composite base bottom meet：h/d≥3‰；The cookware that this programme provides, the ratio for designing h and d is more than or equal to 3 ‰, it can prevent the composite base of the cookware under dry combustion method or thermal shock operating mode from occurring outwardly protruding the irreversible transformation of cookware baseplane in this way, to ensure the stability of the concave inward structure of composite base, it avoids during high-temperature heating due to causing the interlayer of composite base relative displacement occur there are expansion tension between metal and causing composite base interlaminar separation, bulge or bottom that the harmful effects such as non-reversible deformation occur, the bad risk for reducing product, improves the quality of product.

Description

Cookware and cooking equipment

Technical field

The utility model is related to kitchen utensils fields, in particular to a kind of cookware and a kind of cooking equipment.

Background technology

During the use of composite bottom boiler, to product in reply thermal shock, endurance quality and durable etc. the tool of dry combustion method There is certain requirement, if the parameter designing of product is improper, composite base just would tend to occur in use and fall off, blister, is different It rings, there is a situation where significant changes etc. to influence performance for radian.

Utility model content

At least one in order to solve the above-mentioned technical problem, one of the utility model is designed to provide a kind of cookware.

Another purpose of the utility model is to carry a kind of cooking equipment with above-mentioned cookware.

To achieve the above object, the embodiment of the utility model first aspect provides a kind of cookware, including：Wall；It is multiple Bottom is closed, the bottom end of the wall is set to, the bottom of the composite base is configured to the structure being recessed to pot, wherein described multiple The recessed depth h of maximum and the diameter d of the composite base bottom for closing bottom bottom meet：h/d≥3‰.

Cookware provided by the utility model by the substructure of composite base at the structure being recessed to pot, and is arranged compound The ratio of the recessed depth h of the maximum and diameter d of composite base bottom of bottom bottom is more than or equal to 3 ‰, can prevent in dry combustion method in this way Or the composite base of cookware occurs outwardly protruding the irreversible transformation of cookware baseplane under thermal shock operating mode, to ensure composite base The stability of concave inward structure avoids the layer due to leading to composite base there are expansion tension between metal during high-temperature heating Between there is relative displacement and cause composite base interlaminar separation, bulge or bottom that the harmful effects such as non-reversible deformation occur, reduce The bad risk of product, improves the quality of product.

In addition, the cookware in above-described embodiment provided by the utility model can also have following additional technical feature：

In above-mentioned technical proposal, the h is more than or equal to 2.5mm；And/or the h is less than or equal to 5mm.

In the present solution, the recessed depth h of maximum of setting composite base bottom more than or equal to 2.5mm, can be utilized multiple in this way It closes the convex that bottom constructs in pot and carries out water conservancy diversion in face of hot-fluid in pot, form multiple thermal convection currents cycles in pot to guide, promoted The uniformity of heat distribution, improves the effect that boils in pot；The recessed depth h of maximum that composite base bottom is arranged is less than or equal to 5mm, this Sample can prevent the recessed depth because of composite base excessive, and the composite base under dry combustion method or thermal shock operating mode is caused convex occur not The problem of risk of reversible deformation increases, and the recessed depth h of maximum of composite base bottom is controlled in 2.5mm~5mm, make compound The convex that bottom constructs in pot has good water conservancy diversion effect in face of hot-fluid in pot, and multiple heat are formed to be more conducive to guide in pot Convection circulation promotes the uniformity of heat distribution in pot, improves the effect that boils.

In any of the above-described technical solution, the bottom of the composite base is integrally recessed to pot.

In the present solution, design composite base is in the structure that bottom is integrally recessed to pot, for the maximum of composite base bottom Recessed depth h and the diameter d of composite base bottom meet：The case where h/d >=3 ‰, may be implemented to prevent in dry combustion method or thermal shock Under operating mode the composite base of cookware occurs outwardly protruding the irreversible transformation of cookware baseplane, to ensure the concave inward structure of composite base Stability avoids opposite due to causing the interlayer of composite base to occur there are expansion tension between metal during high-temperature heating Displacement simultaneously causes composite base interlaminar separation, bulge or bottom that the harmful effects such as non-reversible deformation occur, and reduces the bad of product Risk.

In any of the above-described technical solution, the h and d meets：h/d≤5‰.

In the present solution, the ratio of the recessed depth h and diameter d of composite base bottom of maximum of setting composite base bottom is less than It equal to 5 ‰, can prevent the recessed depth because of composite base excessive in this way, and lead to the composite base under dry combustion method or thermal shock operating mode The problem of risk for convex irreversible transformation occur increases, with by by the recessed depth h of maximum and composite base of composite base bottom The Ratio control of the diameter d of bottom realizes the bad risk for reducing product 3 ‰~5 ‰.

In any of the above-described technical solution, the recessed depth of the center position of the composite base bottom is maximum.

In the present solution, it is understood that for the structure at the edge of composite base bottom, in composite base bottom Center position be more also easy to produce deflection deformation, can be easier to process the recessed depth of the center position of composite base bottom in this way Maximum structure is spent, and correspondingly, during cookware use, the maximum distortion of the generation on composite base also easily occurs in again The center position for closing bottom bottom, the recessed depth here by the center position of design composite base bottom is maximum, in this way may be used To improve to the generated absorption neutralising capacity deformed during composite base use, reduces composite base and occur externally protruding out in cookware bottom The risk of the irreversible transformation in face.

In any of the above-described technical solution, the composite base includes：The bottom of a pan is connected to the bottom end of the wall；Outsourcing egative film, On the outside of the bottom of a pan, the outsourcing egative film is bonded and connect with the bottom of a pan.

In the present solution, making outsourcing egative film be bonded and connect with the bottom of a pan, even if outsourcing egative film bottom and pot bottom part adaptation And be each configured to the structure being recessed to pot, wherein by design be arranged the recessed depth h of maximum of composite base bottom with it is compound The ratio of the diameter d of bottom bottom is 3 ‰~5 ‰, can prevent the composite base under dry combustion method or thermal shock operating mode from convex occur The irreversible transformation for going out cookware baseplane ensures the stability of the concave inward structure of composite base, so as to accordingly reduce outsourcing egative film With the bottom of a pan due to absciss layer risk caused by expansion displacement difference, composite base interlaminar separation, bulge or bottom is avoided to occur irreversible The harmful effects such as deformation reduce the bad risk of product, improve the quality of product.

In above-mentioned technical proposal, the bottom of a pan is single layer structure or the bottom of a pan is multilayered structure.

In the present solution, the setting the bottom of a pan is single layer structure, such as the single layer pot body that the design the bottom of a pan and wall are integrally formed, Have the advantages that easy to process；The setting the bottom of a pan is multilayered structure, such as the multilayer pot body that the design the bottom of a pan is integrally formed with wall, Alternatively, the single layer pot body that design wall is integrally formed with the interior bottom in multilayered structure, and on the interior bottom of single layer pot body Middle layer is set up to construct the pan bottom structure of multilayer, wherein it is understood that middle layer is located at outsourcing egative film and interior bottom Between, the effect of homogenizing heat can be played between the interior bottom and outsourcing egative film of single layer pot body.

In above-mentioned technical proposal, the outsourcing egative film is magnetic conduction plastid.

In the present solution, it is understood that magnetic conduction plastid can incude heat production in alternating magnetic field, for example, magnetic conduction matter Body is 430 stainless steels, wherein setting outsourcing egative film is magnetic conduction plastid, so that product can operate in the occasion of electromagnetic heating.

The embodiment of the utility model second aspect provides institute in a kind of cooking equipment, including any of the above-described technical solution The cookware stated.

Cooking equipment provided by the utility model, because of the cookware being provided with described in any of the above-described technical solution, to have There is all of the above advantageous effect, details are not described herein.

Optionally, the cooking equipment is electric cooker, electric cooking pot, electric pressure cooking saucepan or electromagnetism furnace module.

The additional aspect and advantage of the utility model will become apparent in following description section, or new by this practicality The practice of type is recognized.

Description of the drawings

The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment Become apparent and is readily appreciated that, wherein：

Fig. 1 is the schematic cross-sectional view of cookware described in one embodiment of the utility model；

Fig. 2 is the structural schematic diagram that cookware described in one embodiment of the utility model coordinates with detection device and heating member；

Fig. 3 is the partial structurtes of cookware and its schematic diagram of interior thermal convection current described in one embodiment of the utility model；

Fig. 4 is the partial structurtes of cookware and its schematic diagram of interior thermal convection current described in one embodiment of the utility model；

Fig. 5 is the partial structurtes of cookware and its schematic diagram of interior thermal convection current described in one embodiment of the utility model.

Wherein, the reference numeral in Fig. 1 and Fig. 5 and the correspondence between component names are：

100 cookwares, 110 walls, 120 composite bases, bottom in 121,122 middle layers, 123 outsourcing egative films, 200 detections are set It is standby, 300 heating members.

Specific implementation mode

In order to be more clearly understood that the above objects, features, and advantages of the utility model, below in conjunction with the accompanying drawings and have The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen The feature in embodiment and embodiment please can be combined with each other.

Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality Novel to be implemented different from other modes described here using other, therefore, the scope of protection of the utility model is simultaneously It is not limited by following public specific embodiment.

Referring to Fig. 1 and Fig. 2 descriptions according to cookware described in the utility model some embodiments.

As depicted in figs. 1 and 2, the utility model first aspect embodiment provide cookware 100, including wall 110 and Composite base 120 set on 110 bottom end of wall, specifically, the bottom of composite base 120 are configured to the structure being recessed to pot, example As the bottom of composite base 120 is integrally configured to the arcuate bottom being recessed to pot, wherein the maximum of 120 bottom of composite base is recessed Depth h and the diameter d of 120 bottom of composite base meet：h/d≥3‰.

Cookware 100 provided by the utility model, by the substructure of composite base 120 at the structure being recessed to pot, and sets The ratio for setting the recessed depth h of the maximum and diameter d of 120 bottom of composite base of 120 bottom of composite base is more than or equal to 3 ‰, in this way may be used It can not with prevent that 100 baseplane of cookware from occurring outwardly protruding in the composite base 120 of the cookware 100 under dry combustion method or thermal shock operating mode Inverse metamorphism is avoided during high-temperature heating with ensuring the stability of the concave inward structure of composite base 120 since there are between metal Expansion tension and cause the interlayer of composite base 120 relative displacement occur and cause 120 interlaminar separation of composite base, bulge or bottom The harmful effects such as non-reversible deformation occur, reduces the bad risk of product, improves the quality of product.

In a preferred embodiment of the utility model, h is more than or equal to 2.5mm.

In the present solution, the recessed depth h of maximum of 120 bottom of setting composite base can be utilized in this way more than or equal to 2.5mm The convex that composite base 120 constructs in pot carries out water conservancy diversion in face of hot-fluid in pot, and multiple thermal convection currents cycles are formed in pot to guide, The uniformity for promoting heat distribution in pot, improves the effect that boils.

In a preferred embodiment of the utility model, h is less than or equal to 5mm.

In the present solution, the recessed depth h of maximum of setting composite base 120 bottom is less than or equal to 5mm, can prevent in this way because The recessed depth of composite base 120 is excessive, and causing under dry combustion method or thermal shock operating mode composite base 120 convex occur can not inversion The problem of risk of shape increases, and the recessed depth h of maximum of 120 bottom of composite base is controlled in 2.5mm~5mm, make composite base 120 convexes constructed in pot have good water conservancy diversion effect in face of hot-fluid in pot, multiple to be more conducive to be formed in guiding pot Thermal convection current recycles, and promotes the uniformity of heat distribution in pot, improves the effect that boils.

In a preferred embodiment of the utility model, as shown in Figure 1, the bottom of composite base 120 is whole to pot indent Enter.

In the present solution, design composite base 120 is in the structure that bottom is integrally recessed to pot, for 120 bottom of composite base The recessed depth h of maximum and the diameter d of 120 bottom of composite base meet：The case where h/d >=3 ‰, may be implemented to prevent in dry combustion method or The composite base 120 of cookware 100 occurs outwardly protruding the irreversible transformation of 100 baseplane of cookware under thermal shock operating mode, to ensure The stability of the concave inward structure of composite base 120 avoids during high-temperature heating due to being led there are expansion tension between metal It causes the interlayer of composite base 120 relative displacement occur and causes 120 interlaminar separation of composite base, bulge or bottom that irreversible shape occurs The harmful effects such as change, reduce the bad risk of product.

In a preferred embodiment of the utility model, h and d meets：h/d≤5‰.

In the present solution, the ratio of the maximum recessed depth h and the diameter d of 120 bottom of composite base of 120 bottom of composite base is arranged Value is less than or equal to 5 ‰, can prevent the recessed depth because of composite base 120 excessive in this way, and causes in dry combustion method or thermal shock work There is the problem of risk raising of convex irreversible transformation in composite base 120 under condition, with by the way that the maximum of 120 bottom of composite base is recessed Enter the Ratio control of the depth h and diameter d of 120 bottom of composite base 3 ‰~5 ‰, realizes the bad risk for reducing product.

In one embodiment of the utility model, as depicted in figs. 1 and 2, the center position of 120 bottom of composite base Recessed depth is maximum.

In the present solution, it is understood that for the structure at the edge of 120 bottom of composite base, in composite base The center position of 120 bottoms is more also easy to produce deflection deformation, can be easier to process the center of 120 bottom of composite base in this way The maximum structure of recessed depth at place, and correspondingly, during 100 use of cookware, the maximum of generation on composite base 120 becomes Shape also easily occurs in the center position of 120 bottom of composite base, here by the center position of 120 bottom of design composite base Recessed depth it is maximum, the absorption neutralising capacity to deforming caused by during 120 use of composite base, drop can be improved in this way Low composite base 120 occurs externally protruding out in the risk of the irreversible transformation of 100 bottom surface of cookware.

In one embodiment of the utility model, as shown in Figure 1, composite base 120 includes：The bottom of a pan and outsourcing egative film 123, Specifically, the bottom of a pan is connected to the bottom end of wall 110；Outsourcing egative film 123 is set on the outside of the bottom of a pan, and outsourcing egative film 123 is bonded with the bottom of a pan And it connects.

In the present solution, making outsourcing egative film 123 be bonded and connect with the bottom of a pan, even if 123 bottom of outsourcing egative film and the bottom of a pan bottom Portion is adapted to and is each configured to the structure being recessed to pot, wherein the recessed depth of maximum of 120 bottom of composite base is arranged by design The ratio for spending the h and diameter d of 120 bottom of composite base is 3 ‰~5 ‰, can be prevented compound under dry combustion method or thermal shock operating mode Bottom 120 occurs outwardly protruding the irreversible transformation of 100 baseplane of cookware, ensures the stability of the concave inward structure of composite base 120, from And outsourcing egative film 123 can be accordingly reduced with the bottom of a pan due to absciss layer risk caused by expansion displacement difference, avoid 120 interlayer of composite base point The harmful effects such as non-reversible deformation occur from, bulge or bottom, reduces the bad risk of product, improves the quality of product.

In one embodiment of the utility model, the bottom of a pan is single layer structure, such as the design the bottom of a pan is integrated with wall 110 Molding single layer pot body, has the advantages that easy to process.

In one embodiment of the utility model, the bottom of a pan is multilayered structure, such as the design the bottom of a pan is integrated with wall 110 Molding multilayer pot body, alternatively, as shown in Figure 1, what design wall 110 was integrally formed with the interior bottom 121 in multilayered structure Single layer pot body, and middle layer 122 is set up to construct the pan bottom structure of multilayer on the interior bottom 121 of single layer pot body, wherein in Interbed 122, can be in the interior bottom 121 and outsourcing egative film 123 of single layer pot body between outsourcing egative film 123 and interior bottom 121 Between play homogenizing heat effect.

In a preferred embodiment of the utility model, outsourcing egative film 123 is magnetic conduction plastid.

In the present solution, it is understood that magnetic conduction plastid can incude heat production in alternating magnetic field, for example, magnetic conduction matter Body is 430 stainless steels, wherein setting outsourcing egative film 123 is magnetic conduction plastid, so that product can operate with the occasion of electromagnetic heating In.

In a specific embodiment of the utility model, a kind of setting for 120 radian parameter of pot composite base in specification is provided Meter scheme, as depicted in figs. 1 and 2, cookware 100 include wall 110 and composite base 120, and composite base 120 is three-decker, respectively For the middle layer 122 between interior bottom 121, outsourcing egative film 123 and interior bottom 121 and outsourcing egative film 123, interior bottom 121 with enclose Wall 110 is an integral molding structure, wherein composite base 120 is concave, can distinguish its side and bottom, 120 bottom of composite base is most Big recessed depth h and the diameter d of 120 bottom of composite base meet：3 ‰≤h/d≤5 ‰, and h is that 2.5mm~5mm is preferable.Principle： 120 product of composite base is unreasonable due to structural parameters, then due to expansion tension between metal during high-temperature heating In the presence of and relative displacement occur may result in interlaminar separation, bulge or bottom shape to deform upon, herein composite base 120 Structure design is in the range of this reasonable data, so that it may to reduce bad risk existing for product.

This programme by it is multigroup experiments have shown that above-mentioned data area can with the reasonability and convenience of optimizing product design, Specifically, d shown in Fig. 1 is the base diameter of pot body outsourcing egative film 123, and also as the base diameter of composite base 120, h are pot The depth of the indent of external packet egative film 123, the also as recessed depth of 120 bottom of composite base；It is shown for experiment in Fig. 2 Detection instrument, such as detection device 200 and heating member 300, specific implementation is as follows：

First, three sample cookwares for experiment are made, it is 1#, 2# and 3# to compile respectively, three sample cookwares it is compound Bottom base diameter d is 200mm, but the recessed depth h of maximum of the composite base bottom of three cookwares is different, respectively 1#-h= 0.4mm, 2#-h=0.6mm, 3#-h=3mm.Then the cookware of three kinds of specifications is put into heating member shown in Fig. 2 and detection is set It is standby upper, dry combustion method is done respectively or thermal shock processing, result are：

1# samples cookware detects largest deformation amount -0.4mm~-0.5mm (examples when bottom temp is about 430 DEG C Such as, largest deformation amount is that -0.4mm then indicates convex deformation under composite base generation, and downwardly projecting deflection degree is 0.4mm, if most Large deformation amount is shown as positive number, then it represents that convex deformation has occurred in composite base), since 1# corresponds to h=0.4mm, then understand compound Convex amount is 0~0.1mm under the downwardly projecting baseplane S in center of bottom bottom, and the deformation of this protrusion baseplane S is cold But irrecoverable after；

2# samples cookware detects largest deformation amount -0.2mm~-0.4mm when bottom temp is about 450 DEG C, by H=0.6mm is corresponded in 2#, then understands sunken bottom phenomenon do not occur on the composite base of 2# cookwares, and can restore substantially after cooling down To initial value；

3# samples cookware detects largest deformation amount -0.5mm~-0.7mm when bottom temp is about 470 DEG C, by H=3mm is corresponded in 3#, then understands sunken bottom phenomenon do not occur on the composite base of 3# cookwares, and can be restored to substantially after cooling down Initial value；

In addition, two sample cookwares are arranged again, number is 4# and 5#, the composite base base diameter of two sample cookwares respectively The recessed depth of maximum of difference, respectively 4#-d=160mm, 5#-d=240mm, but the composite base bottom of two sample cookwares It is identical, it is 0.4mm, then the cookware 4# and 5# of two kinds of specifications is put on heating member and detection device shown in Fig. 2, respectively It does dry combustion method or thermal shock processing, result is：

There is not sunken bottom phenomenon on the composite base of 4# sample cookwares, and initial value can be restored to substantially after cooling down；

5# sample cookwares detect largest deformation amount -0.5mm~-0.7mm, there is sunken bottom phenomenon；

From the foregoing, it will be observed that the stability of the bottom radian of pot possessing composite bottom is relevant with base diameter and maximum recessed depth, and When the recessed depth h of maximum and the diameter d of composite base bottom of composite base bottom meet 3 ‰≤h/d≤5 ‰, it can be achieved without convex Bottom phenomenon.

In addition, as shown in Figures 3 to 5, the bottom of a pan diameter of three sample cookwares is identical, by simulating to take the dish out of the pot interior thermal convection current Distribution, for example, the curve arrow in Fig. 3 illustrates the distribution of the thermal convection current in the sample cookware of h1=5mm, wherein h1=5mm tables Show that the composite base bottom of cookware relative to the recessed depth of cookware baseplane S is 5mm, it is not ugly from the curve arrow distribution in figure Go out, multiple thermal convection current cycles can be formed in pot, to realize uniform heat distribution；Curve arrow in Fig. 4 illustrates h2=2.5mm's Thermal convection current distribution in sample cookware, wherein h2=2.5mm indicates that the composite base bottom of cookware is recessed relative to cookware baseplane S It is 2.5mm to enter depth, is not difficult to find out from the curve arrow distribution in figure, multiple thermal convection current cycles can be formed in pot, to realize heat It is evenly distributed；Curve arrow in Fig. 5 illustrates the distribution of the thermal convection current in the sample cookware of h=0mm, i.e. the composite base bottom of cookware Portion is 0mm relative to the recessed depth of cookware baseplane S, and the composite base of cookware is flat, wherein from the curve arrow distribution in figure It is not difficult to find out, with the certain convection action of formation in pot, but thermal cycle can not be formed, the mesh for promoting uniform heat distribution in pot is not achieved 's.

From the foregoing, it will be observed that thermal convection current distribution and base diameter and maximum recessed depth are relevant and multiple in the pot of pot possessing composite bottom When the recessed depth h of maximum of conjunction bottom bottom meets 2.5mm≤h≤5mm, the purpose for promoting uniform heat distribution in pot can be achieved.

The cooking equipment that the embodiment of the utility model second aspect provides, including described in any of the above-described technical solution Cookware.

Cooking equipment provided by the utility model, because of the cookware being provided with described in any of the above-described technical solution, to have There is all of the above advantageous effect, details are not described herein.

Optionally, cooking equipment is electric cooker, electric cooking pot, electric pressure cooking saucepan or electromagnetism furnace module.

In conclusion cookware provided by the utility model, the structure that design composite base is integrally recessed to pot in bottom, and The ratio that the recessed depth h of maximum and the diameter d of composite base bottom of composite base bottom is arranged is more than or equal to 3 ‰, in this way can be to prevent Only the composite base of cookware occurs outwardly protruding the irreversible transformation of cookware baseplane under dry combustion method or thermal shock operating mode, to ensure The stability of the concave inward structure of composite base avoids multiple due to causing there are expansion tension between metal during high-temperature heating There is relative displacement and causes composite base interlaminar separation, bulge or bottom that the bad shadows such as non-reversible deformation occur in the interlayer for closing bottom It rings, reduces the bad risk of product, improve the quality of product.

In the present invention, term " multilayer " then refers to two layers or two layers or more, unless otherwise restricted clearly.Term The terms such as " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, for example, " connection " may be a fixed connection, Can be detachably connected, or be integrally connected；" connected " can be directly connected, and can also pass through the indirect phase of intermediary Even.For the ordinary skill in the art, it can understand above-mentioned term in the present invention as the case may be Concrete meaning.

In the description of the utility model, it is to be understood that the orientation or positional relationship of the instructions such as term "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate Or imply that signified device or unit must have specific direction, with specific azimuth configuration and operation, it is thus impossible to understand For limitations of the present invention.

In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc. Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiments or example In can be combined in any suitable manner.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of cookware, which is characterized in that including：

Wall；

Composite base, is set to the bottom end of the wall, and the bottom of the composite base is configured to the structure being recessed to pot, wherein The recessed depth h of maximum and the diameter d of the composite base bottom of the composite base bottom meet：h/d≥3‰.

2. cookware according to claim 1, which is characterized in that

The h is more than or equal to 2.5mm；And/or

The h is less than or equal to 5mm.

3. cookware according to claim 1, which is characterized in that

The bottom of the composite base is integrally recessed to pot.

4. cookware according to any one of claim 1 to 3, which is characterized in that

The h and d meets：h/d≤5‰.

5. cookware according to any one of claim 1 to 3, which is characterized in that

The recessed depth of the center position of the composite base bottom is maximum.

6. cookware according to any one of claim 1 to 3, which is characterized in that the composite base includes：

The bottom of a pan is connected to the bottom end of the wall；

Outsourcing egative film, is set on the outside of the bottom of a pan, and the outsourcing egative film is bonded and connect with the bottom of a pan.

7. cookware according to claim 6, which is characterized in that

The bottom of a pan is single layer structure or the bottom of a pan is multilayered structure.

8. cookware according to claim 6, which is characterized in that

The outsourcing egative film is magnetic conduction plastid.

9. a kind of cooking equipment, which is characterized in that including cookware such as described in any item of the claim 1 to 8.

10. cooking equipment according to claim 9, which is characterized in that

The cooking equipment is electric cooker, electric cooking pot, electric pressure cooking saucepan or electromagnetism furnace module.